{"id":461,"date":"2024-10-23T11:30:44","date_gmt":"2024-10-23T02:30:44","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=461"},"modified":"2025-03-24T08:53:24","modified_gmt":"2025-03-23T23:53:24","slug":"java%e3%82%a4%e3%83%b3%e3%82%bf%e3%83%bc%e3%83%95%e3%82%a7%e3%83%bc%e3%82%b9%e3%81%ae%e5%9f%ba%e7%a4%8e%e3%81%8b%e3%82%89%e5%bf%9c%e7%94%a8%e3%81%be%e3%81%a7%ef%bc%9a7%e3%81%a4%e3%81%ae%e5%ae%9f","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=461","title":{"rendered":"Java\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u57fa\u790e\u304b\u3089\u5fdc\u7528\u307e\u3067\uff1a7\u3064\u306e\u5b9f\u8df5\u7684\u306a\u4f7f\u3044\u65b9\u3068\u8a2d\u8a08\u306e\u30b3\u30c4"},"content":{"rendered":"<div id=\"sgb-css-id-1\">\n<div class=\"toc\"><br \/>\n<b>Warning<\/b>:  Undefined array key \"is_admin\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>116<\/b><br \/>\n<br \/>\n<b>Warning<\/b>:  Undefined array key \"is_category_top\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>121<\/b><br \/>\n<br \/>\n<b>Warning<\/b>:  Undefined array key \"is_top\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>128<\/b><br \/>\n    <div id=\"toc_container\" class=\"sgb-toc--bullets js-smooth-scroll\" data-dialog-title=\"\u76ee\u6b21\">\n      <p class=\"toc_title\">\u76ee\u6b21 <\/p>\n      <ul class=\"toc_list\">  <li class=\"first\">    <a href=\"#i-0\">\u306f\u3058\u3081\u306b<\/a>  <\/li>  <li>    <a href=\"#i-1\">1. Java\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3068\u306f\uff1f\u57fa\u672c\u6982\u5ff5\u3068\u91cd\u8981\u6027<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-2\">1.1 \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u5b9a\u7fa9\u3068\u7279\u5fb4<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-3\">1.2 \u306a\u305c\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u304c\u91cd\u8981\u306a\u306e\u304b<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-4\">2. \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-5\">2.1 \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u5ba3\u8a00\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-6\">2.2 \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u5b9f\u88c5\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-7\">2.3 \u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\u3068\u9759\u7684\u30e1\u30bd\u30c3\u30c9\uff08Java 8\u4ee5\u964d\uff09<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-8\">\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3068\u6ce8\u610f\u70b9<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-9\">3. \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3068\u30af\u30e9\u30b9\u306e\u9055\u3044\uff1a\u4f7f\u3044\u5206\u3051\u306e\u30dd\u30a4\u30f3\u30c8<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-10\">3.1 \u62bd\u8c61\u30af\u30e9\u30b9\u3068\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u6bd4\u8f03<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-11\">3.2 \u3069\u3093\u306a\u6642\u306b\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u9078\u3076\u3079\u304d\u304b<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-12\">4. \u5b9f\u8df5\u7684\u306a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u6d3b\u7528\u4f8b<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-13\">4.1 \u30b9\u30c8\u30e9\u30c6\u30b8\u30fc\u30d1\u30bf\u30fc\u30f3\u306e\u5b9f\u88c5<\/a>      <\/li>      <li>        <a href=\"#i-14\">4.2 \u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u306e\u5b9f\u73fe<\/a>      <\/li>      <li>        <a href=\"#i-15\">4.3 \u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u306e\u6d3b\u7528<\/a>      <\/li>      <li>        <a href=\"#i-16\">4.4 \u4f9d\u5b58\u6027\u6ce8\u5165<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-17\">4.5 \u30a4\u30d9\u30f3\u30c8\u30ea\u30b9\u30ca\u30fc<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-18\">5. Java 8\u4ee5\u964d\u306e\u65b0\u6a5f\u80fd\uff1a\u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\u3068\u9759\u7684\u30e1\u30bd\u30c3\u30c9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-19\">5.1 \u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\u306e\u5229\u70b9\u3068\u4f7f\u3044\u65b9<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-20\">5.2 \u9759\u7684\u30e1\u30bd\u30c3\u30c9\u3067\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u6a5f\u80fd\u3092\u63d0\u4f9b\u3059\u308b<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-21\">6. \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f7f\u3063\u305f\u8a2d\u8a08\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-22\">6.1 \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u5206\u96e2\u306e\u539f\u5247\uff08ISP\uff09\u306e\u9069\u7528<\/a>      <\/li>      <li>        <a href=\"#i-23\">6.2 \u4f9d\u5b58\u6027\u9006\u8ee2\u306e\u539f\u5247\uff08DIP\uff09\u3068\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-24\">\u305d\u306e\u4ed6\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-25\">7. \u9ad8\u5ea6\u306a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u6d3b\u7528\u30c6\u30af\u30cb\u30c3\u30af<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-26\">7.1 \u95a2\u6570\u578b\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3068\u30e9\u30e0\u30c0\u5f0f<\/a>      <\/li>      <li>        <a href=\"#i-27\">7.2 \u30de\u30fc\u30ab\u30fc\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u4f7f\u7528\u4f8b<\/a>      <\/li>      <li>        <a href=\"#i-28\">\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f7f\u3063\u305f\u9ad8\u5ea6\u306a\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3<\/a>      <\/li>      <li>        <a href=\"#i-29\">\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3068\u30b8\u30a7\u30cd\u30ea\u30af\u30b9\u306e\u7d44\u307f\u5408\u308f\u305b<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-30\">\u30d7\u30e9\u30b0\u30a4\u30f3\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3068\u30c6\u30b9\u30bf\u30d3\u30ea\u30c6\u30a3<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-31\">8. \u307e\u3068\u3081\uff1aJava\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u30de\u30b9\u30bf\u30fc\u3078\u306e\u9053<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-32\">8.1 \u5b66\u7fd2\u306e\u30dd\u30a4\u30f3\u30c8\u3068\u6b21\u306e\u30b9\u30c6\u30c3\u30d7<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-33\">8.2 \u5b9f\u8df5\u7684\u306a\u8ab2\u984c\u3067\u7406\u89e3\u3092\u6df1\u3081\u308b\u65b9\u6cd5<\/a>      <\/li>    <\/ul>  <\/li><\/ul>\n      <a href=\"#\" class=\"sgb-toc-button js-toc-button\" rel=\"nofollow\" data-open-dialog=\"true\"><i class=\"fa fa-list\"><\/i><span class=\"sgb-toc-button__text\">\u76ee\u6b21\u3078<\/span><\/a>\n    <\/div><\/div><h2 class=\"wp-block-heading\" id=\"i-0\">\u306f\u3058\u3081\u306b<\/h2>\n<\/div>\n\n<div id=\"sgb-css-id-2\">\n<p>Java\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u4e16\u754c\u3067\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306f\u975e\u5e38\u306b\u5f37\u529b\u304b\u3064\u67d4\u8edf\u306a\u30c4\u30fc\u30eb\u3067\u3059\u3002\u672c\u8a18\u4e8b\u300cJava\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u57fa\u790e\u304b\u3089\u5fdc\u7528\u307e\u3067\uff1a7\u3064\u306e\u5b9f\u8df5\u7684\u306a\u4f7f\u3044\u65b9\u3068\u8a2d\u8a08\u306e\u30b3\u30c4\u300d\u3067\u306f\u3001Java\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u9b45\u529b\u3068\u53ef\u80fd\u6027\u3092\u5fb9\u5e95\u7684\u306b\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-3\">\n<p>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f7f\u3044\u3053\u306a\u3059\u3053\u3068\u3067\u3001\u3042\u306a\u305f\u306e\u30b3\u30fc\u30c9\u306f\u98db\u8e8d\u7684\u306b\u6539\u5584\u3057\u307e\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-7\">\n<div class=\"wp-block-sgb-block-simple sgb-box-simple sgb-box-simple--title-normal sgb-box-simple--with-border\"><div style=\"background-color:var(--wp--preset--color--sango-main);color:#FFF\" class=\"sgb-box-simple__title\">\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f7f\u3044\u3053\u306a\u3059\u3053\u3068\u306e\u30e1\u30ea\u30c3\u30c8<\/div><div class=\"sgb-box-simple__body\" style=\"border-color:var(--wp--preset--color--sango-main);background-color:#FFF\">\n<ul class=\"wp-block-list\"><div id=\"sgb-css-id-4\">\n<li>\u30b3\u30fc\u30c9\u306e\u67d4\u8edf\u6027\u3068\u518d\u5229\u7528\u6027\u304c\u5411\u4e0a<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-5\">\n<li>\u30b7\u30b9\u30c6\u30e0\u8a2d\u8a08\u304c\u62bd\u8c61\u5316\u306b\u3088\u3063\u3066\u6539\u5584<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-6\">\n<li>\u591a\u91cd\u7d99\u627f\u306e\u554f\u984c\u3092 elegant \u306b\u89e3\u6c7a<\/li>\n<\/div>\n\n\n<li>\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u3092\u52b9\u679c\u7684\u306b\u5b9f\u73fe<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div>\n\n<div id=\"sgb-css-id-8\">\n<p>\u672c\u8a18\u4e8b\u3067\u306f\u3001Java\u521d\u5fc3\u8005\u304b\u3089\u4e2d\u7d1a\u8005\u306e\u30d7\u30ed\u30b0\u30e9\u30de\u30fc\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u5b66\u3076\u5b66\u751f\u3001\u305d\u3057\u3066\u30b7\u30b9\u30c6\u30e0\u8a2d\u8a08\u306b\u643a\u308f\u308b\u958b\u767a\u8005\u307e\u3067\u3001\u5e45\u5e83\u3044\u8aad\u8005\u306e\u7686\u69d8\u306b\u4fa1\u5024\u3042\u308b\u60c5\u5831\u3092\u304a\u5c4a\u3051\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-9\">\n<p>\u4ee5\u4e0b\u306e\u30c8\u30d4\u30c3\u30af\u3092\u901a\u3058\u3066\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u57fa\u672c\u304b\u3089\u5fdc\u7528\u307e\u3067\u3001\u6bb5\u968e\u7684\u306b\u7406\u89e3\u3092\u6df1\u3081\u3066\u3044\u304d\u307e\u3057\u3087\u3046\uff1a<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-16\">\n<div class=\"wp-block-sgb-block-simple sgb-box-simple sgb-box-simple--title-normal sgb-box-simple--with-border\"><div style=\"background-color:var(--wp--preset--color--sango-main);color:#FFF\" class=\"sgb-box-simple__title\">\u30c8\u30d4\u30c3\u30af<\/div><div class=\"sgb-box-simple__body\" style=\"border-color:var(--wp--preset--color--sango-main);background-color:#FFF\">\n<ol class=\"wp-block-list\"><div id=\"sgb-css-id-10\">\n<li>\u57fa\u672c\u6982\u5ff5\u3068\u91cd\u8981\u6027<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-11\">\n<li>\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-12\">\n<li>\u30af\u30e9\u30b9\u3068\u306e\u9055\u3044\u3068\u4f7f\u3044\u5206\u3051<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-13\">\n<li>\u5b9f\u8df5\u7684\u306a\u6d3b\u7528\u4f8b<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-14\">\n<li>Java 8\u4ee5\u964d\u306e\u65b0\u6a5f\u80fd<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-15\">\n<li>\u8a2d\u8a08\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/li>\n<\/div>\n\n\n<li>\u9ad8\u5ea6\u306a\u6d3b\u7528\u30c6\u30af\u30cb\u30c3\u30af<\/li>\n<\/ol>\n<\/div><\/div>\n<\/div>\n\n<div id=\"sgb-css-id-17\">\n<p>\u3053\u306e\u8a18\u4e8b\u3092\u8aad\u307f\u7d42\u3048\u308b\u3068\u3001\u3042\u306a\u305f\u306f\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f7f\u3063\u3066\u67d4\u8edf\u3067\u4fdd\u5b88\u6027\u306e\u9ad8\u3044Java\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u66f8\u3051\u308b\u3088\u3046\u306b\u306a\u308a\u3001\u5927\u898f\u6a21\u306a\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u3082\u52b9\u679c\u7684\u306b\u8ca2\u732e\u3067\u304d\u308b\u30b9\u30ad\u30eb\u3092\u8eab\u306b\u3064\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-18\">\n<p>\u305d\u308c\u3067\u306f\u3001Java\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u9b45\u529b\u7684\u306a\u4e16\u754c\u306b\u98db\u3073\u8fbc\u3093\u3067\u307f\u307e\u3057\u3087\u3046\uff01<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-19\">\n<h2 class=\"wp-block-heading\" id=\"i-1\">1. Java\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3068\u306f\uff1f\u57fa\u672c\u6982\u5ff5\u3068\u91cd\u8981\u6027<\/h2>\n<\/div>\n\n<div id=\"sgb-css-id-20\">\n<p>Java\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306b\u304a\u3044\u3066\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306f\u975e\u5e38\u306b\u91cd\u8981\u306a\u6982\u5ff5\u3067\u3059\u3002\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u7406\u89e3\u3057\u3001\u9069\u5207\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u67d4\u8edf\u3067\u4fdd\u5b88\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3067\u306f\u3001Java\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3068\u306f\u4f55\u304b\u3001\u305d\u3057\u3066\u306a\u305c\u91cd\u8981\u306a\u306e\u304b\u3092\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-21\">\n<h3 class=\"wp-block-heading\" id=\"i-2\">1.1 \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u5b9a\u7fa9\u3068\u7279\u5fb4<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-22\">\n<p>Java\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306f\u3001\u30af\u30e9\u30b9\u304c\u5b9f\u88c5\u3059\u3079\u304d\u30e1\u30bd\u30c3\u30c9\u306e\u30b7\u30b0\u30cd\u30c1\u30e3\uff08\u540d\u524d\u3001\u5f15\u6570\u3001\u623b\u308a\u5024\u306e\u578b\uff09\u3092\u5b9a\u7fa9\u3059\u308b\u62bd\u8c61\u578b\u3067\u3059\u3002\u7c21\u5358\u306b\u8a00\u3048\u3070\u3001\u300c\u3053\u3046\u3044\u3046\u6a5f\u80fd\u3092\u6301\u3064\u3079\u304d\u300d\u3068\u3044\u3046\u8a2d\u8a08\u56f3\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-23\">\n<p>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u4e3b\u306a\u7279\u5fb4\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-27\">\n<div class=\"wp-block-sgb-block-simple sgb-box-simple sgb-box-simple--title-normal sgb-box-simple--with-border\"><div style=\"background-color:var(--wp--preset--color--sango-main);color:#FFF\" class=\"sgb-box-simple__title\">\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u4e3b\u306a\u7279\u5fb4<\/div><div class=\"sgb-box-simple__body\" style=\"border-color:var(--wp--preset--color--sango-main);background-color:#FFF\">\n<ul class=\"wp-block-list\"><div id=\"sgb-css-id-24\">\n<li>\u3059\u3079\u3066\u306e\u30e1\u30bd\u30c3\u30c9\u306f\u6697\u9ed9\u7684\u306b <code>public abstract<\/code><\/li>\n<\/div>\n\n<div id=\"sgb-css-id-25\">\n<li>\u30d5\u30a3\u30fc\u30eb\u30c9\u306f\u6697\u9ed9\u7684\u306b <code>public static final<\/code>\uff08\u5b9a\u6570\uff09<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-26\">\n<li>\u591a\u91cd\u7d99\u627f\u304c\u53ef\u80fd\uff08\u8907\u6570\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3067\u304d\u308b\uff09<\/li>\n<\/div>\n\n\n<li>\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3067\u304d\u306a\u3044<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div>\n\n<div id=\"sgb-css-id-28\">\n<p>Java 8\u4ee5\u964d\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\u3068\u9759\u7684\u30e1\u30bd\u30c3\u30c9\u3082\u542b\u3081\u3089\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u67d4\u8edf\u6027\u304c\u5927\u5e45\u306b\u5411\u4e0a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-29\">\n<h3 class=\"wp-block-heading\" id=\"i-3\">1.2 \u306a\u305c\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u304c\u91cd\u8981\u306a\u306e\u304b<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-30\">\n<p>Java\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u304c\u91cd\u8981\u3067\u3042\u308b\u7406\u7531\u306f\u3001\u4ee5\u4e0b\u306e\u70b9\u306b\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-34\">\n<div class=\"wp-block-sgb-block-simple sgb-box-simple sgb-box-simple--title-normal sgb-box-simple--with-border\"><div style=\"background-color:var(--wp--preset--color--sango-main);color:#FFF\" class=\"sgb-box-simple__title\">\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u304c\u91cd\u8981\u3067\u3042\u308b\u7406\u7531<\/div><div class=\"sgb-box-simple__body\" style=\"border-color:var(--wp--preset--color--sango-main);background-color:#FFF\">\n<ol class=\"wp-block-list\"><div id=\"sgb-css-id-31\">\n<li><strong>\u30b3\u30fc\u30c9\u306e\u67d4\u8edf\u6027\u3068\u518d\u5229\u7528\u6027\u306e\u5411\u4e0a<\/strong>\uff1a<br>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u5b9f\u88c5\u306e\u8a73\u7d30\u304b\u3089\u62bd\u8c61\u5316\u3055\u308c\u305f\u8a2d\u8a08\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30b3\u30fc\u30c9\u306e\u5909\u66f4\u3084\u62e1\u5f35\u304c\u5bb9\u6613\u306b\u306a\u308a\u3001\u518d\u5229\u7528\u6027\u304c\u9ad8\u307e\u308a\u307e\u3059\u3002<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-32\">\n<li><strong>\u30b7\u30b9\u30c6\u30e0\u8a2d\u8a08\u306e\u62bd\u8c61\u5316<\/strong>\uff1a<br>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u901a\u3058\u3066\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u5404\u90e8\u5206\u304c\u3069\u306e\u3088\u3046\u306b\u76f8\u4e92\u4f5c\u7528\u3059\u308b\u304b\u3092\u5b9a\u7fa9\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u5927\u898f\u6a21\u306a\u30b7\u30b9\u30c6\u30e0\u3067\u3082\u898b\u901a\u3057\u306e\u826f\u3044\u8a2d\u8a08\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-33\">\n<li><strong>\u591a\u91cd\u7d99\u627f\u306e\u554f\u984c\u89e3\u6c7a<\/strong>\uff1a<br>Java\u3067\u306f\u3001\u30af\u30e9\u30b9\u306e\u591a\u91cd\u7d99\u627f\u306f\u8a31\u53ef\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u304c\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u591a\u91cd\u7d99\u627f\u306f\u53ef\u80fd\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u8907\u6570\u306e\u632f\u308b\u821e\u3044\u30921\u3064\u306e\u30af\u30e9\u30b9\u306b\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/div>\n\n\n<li><strong>\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u306e\u5b9f\u73fe<\/strong>\uff1a<br>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u7570\u306a\u308b\u30af\u30e9\u30b9\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u5171\u901a\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u578b\u3068\u3057\u3066\u6271\u3048\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u67d4\u8edf\u306a\u30b3\u30fc\u30c9\u8a2d\u8a08\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n<\/ol>\n<\/div><\/div>\n<\/div>\n\n<div id=\"sgb-css-id-35\">\n<p>\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b7\u30f3\u30d7\u30eb\u306a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3068\u305d\u306e\u5b9f\u88c5\u3092\u8003\u3048\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<\/div>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public interface Drawable {\n    void draw();\n}\n\npublic class Circle implements Drawable {\n    @Override\n    public void draw() {\n        System.out.println(\"\u5186\u3092\u63cf\u753b\");\n    }\n}\n\npublic class Square implements Drawable {\n    @Override\n    public void draw() {\n        System.out.println(\"\u56db\u89d2\u3092\u63cf\u753b\");\n    }\n}<\/pre>\n\n\n<div id=\"sgb-css-id-36\">\n<p>\u3053\u306e\u3088\u3046\u306b\u3001<code>Drawable<\/code>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068\u3067\u3001<code>Circle<\/code>\u3068<code>Square<\/code>\u30af\u30e9\u30b9\u306b\u5171\u901a\u306e\u6a5f\u80fd\u3092\u6301\u305f\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305d\u3057\u3066\u3001\u3053\u308c\u3089\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092<code>Drawable<\/code>\u578b\u3068\u3057\u3066\u6271\u3046\u3053\u3068\u3067\u3001\u591a\u69d8\u306a\u56f3\u5f62\u3092\u7d71\u4e00\u7684\u306b\u6271\u3046\u3053\u3068\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">Drawable shape1 = new Circle();\nDrawable shape2 = new Square();\nshape1.draw(); \/\/ \u51fa\u529b: \u5186\u3092\u63cf\u753b\nshape2.draw(); \/\/ \u51fa\u529b: \u56db\u89d2\u3092\u63cf\u753b<\/pre>\n\n\n<div id=\"sgb-css-id-37\">\n<p>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u4f7f\u7528\u306f\u3001Java\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306b\u304a\u3051\u308b\u91cd\u8981\u306a\u8a2d\u8a08\u539f\u5247\u306e1\u3064\u3067\u3059\u3002\u9069\u5207\u306b\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u67d4\u8edf\u3067\u62e1\u5f35\u6027\u306e\u9ad8\u3044\u3001\u305d\u3057\u3066\u4fdd\u5b88\u3057\u3084\u3059\u3044\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u306b\u3064\u3044\u3066\u3001\u3055\u3089\u306b\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-38\">\n<h2 class=\"wp-block-heading\" id=\"i-4\">2. \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9<\/h2>\n<\/div>\n\n<div id=\"sgb-css-id-39\">\n<p>Java\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u52b9\u679c\u7684\u306b\u6d3b\u7528\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u305d\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u5ba3\u8a00\u65b9\u6cd5\u3068\u5b9f\u88c5\u65b9\u6cd5\u3001\u305d\u3057\u3066 Java 8 \u4ee5\u964d\u3067\u5c0e\u5165\u3055\u308c\u305f\u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\u3068\u9759\u7684\u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u3044\u65b9\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-40\">\n<h3 class=\"wp-block-heading\" id=\"i-5\">2.1 \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u5ba3\u8a00\u65b9\u6cd5<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-41\">\n<p>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5ba3\u8a00\u3059\u308b\u306b\u306f\u3001<code>interface<\/code> \u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u57fa\u672c\u7684\u306a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u5ba3\u8a00\u4f8b\u3067\u3059\u3002<\/p>\n<\/div>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public interface Drawable {\n    void draw();  \/\/ \u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\uff08\u81ea\u52d5\u7684\u306b public abstract\uff09\n    Color getColor();  \/\/ \u5225\u306e\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\n\n    int MAX_SIZE = 100;  \/\/ \u5b9a\u6570\uff08\u81ea\u52d5\u7684\u306b public static final\uff09\n}<\/pre>\n\n\n<div id=\"sgb-css-id-42\">\n<p>\u3053\u3053\u3067\u6ce8\u610f\u3059\u3079\u304d\u70b9\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-44\">\n<div class=\"wp-block-sgb-block-simple sgb-box-simple sgb-box-simple--title-normal sgb-box-simple--with-border\"><div style=\"background-color:var(--wp--preset--color--sango-main);color:#FFF\" class=\"sgb-box-simple__title\">\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5ba3\u8a00\u306e\u6ce8\u610f\u70b9<\/div><div class=\"sgb-box-simple__body\" style=\"border-color:var(--wp--preset--color--sango-main);background-color:#FFF\">\n<ul class=\"wp-block-list\"><div id=\"sgb-css-id-43\">\n<li>\u30e1\u30bd\u30c3\u30c9\u306f\u81ea\u52d5\u7684\u306b <code>public abstract<\/code> \u306b\u306a\u308b\u305f\u3081\u3001\u3053\u308c\u3089\u306e\u30ad\u30fc\u30ef\u30fc\u30c9\u306f\u7701\u7565\u53ef\u80fd\u3067\u3042\u308b\u3002<\/li>\n<\/div>\n\n\n<li>\u30d5\u30a3\u30fc\u30eb\u30c9\u306f\u81ea\u52d5\u7684\u306b <code>public static final<\/code> \u306b\u306a\u308a\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u5b9a\u6570\u3068\u3057\u3066\u6271\u308f\u308c\u308b\u3002<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div>\n\n<div id=\"sgb-css-id-45\">\n<h3 class=\"wp-block-heading\" id=\"i-6\">2.2 \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u5b9f\u88c5\u65b9\u6cd5<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-46\">\n<p>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3059\u308b\u306b\u306f\u3001<code>implements<\/code> \u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u3001\u5148\u307b\u3069\u5b9a\u7fa9\u3057\u305f <code>Drawable<\/code> \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3059\u308b\u30af\u30e9\u30b9\u306e\u4f8b\u3067\u3059\u3002<\/p>\n<\/div>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class Circle implements Drawable {\n    private Color color;\n\n    @Override\n    public void draw() {\n        System.out.println(\"\u5186\u3092\u63cf\u753b\u3057\u307e\u3059\");\n    }\n\n    @Override\n    public Color getColor() {\n        return this.color;\n    }\n}<\/pre>\n\n\n<div id=\"sgb-css-id-47\">\n<p>\u30dd\u30a4\u30f3\u30c8\uff1a<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-48\">\n<p>\u3000\u25cf \u30af\u30e9\u30b9\u306f\u8907\u6570\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3067\u304d\u307e\u3059\uff08\u4f8b\uff1a<code>class MyClass implements Interface1, Interface2<\/code>\uff09\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-49\">\n<p>\u3000\u25cf \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u3059\u3079\u3066\u306e\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-50\">\n<h3 class=\"wp-block-heading\" id=\"i-7\">2.3 \u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\u3068\u9759\u7684\u30e1\u30bd\u30c3\u30c9\uff08Java 8\u4ee5\u964d\uff09<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-51\">\n<p>Java 8\u304b\u3089\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b\u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\u3068\u9759\u7684\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n<\/div>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public interface Drawable {\n    void draw();\n\n    default void printInfo() {\n        System.out.println(\"\u3053\u308c\u306f\u63cf\u753b\u53ef\u80fd\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3059\");\n    }\n\n    static Drawable createDefault() {\n        return new DefaultDrawable();\n    }\n}<\/pre>\n\n\n<div id=\"sgb-css-id-52\">\n<p>\u3000\u25cf \u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\uff08<code>printInfo()<\/code>\uff09\u306f\u5b9f\u88c5\u30af\u30e9\u30b9\u3067\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3067\u304d\u307e\u3059\u304c\u3001\u5fc5\u9808\u3067\u306f\u306a\u3044\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-53\">\n<p>\u3000\u25cf \u9759\u7684\u30e1\u30bd\u30c3\u30c9\uff08<code>createDefault()<\/code>\uff09\u306f\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u81ea\u4f53\u306b\u5c5e\u3057\u3001\u5b9f\u88c5\u30af\u30e9\u30b9\u3067\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3067\u304d\u306a\u3044\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-54\">\n<h3 class=\"wp-block-heading\" id=\"i-8\">\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3068\u6ce8\u610f\u70b9<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-58\">\n<div class=\"wp-block-sgb-block-simple sgb-box-simple sgb-box-simple--title-normal sgb-box-simple--with-border\"><div style=\"background-color:var(--wp--preset--color--sango-main);color:#FFF\" class=\"sgb-box-simple__title\">\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3068\u6ce8\u610f\u70b9<\/div><div class=\"sgb-box-simple__body\" style=\"border-color:var(--wp--preset--color--sango-main);background-color:#FFF\">\n<ol class=\"wp-block-list\"><div id=\"sgb-css-id-55\">\n<li>\u547d\u540d\u898f\u5247\uff1a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u540d\u306f\u5f62\u5bb9\u8a5e\u7684\u306a\u540d\u524d\u3092\u4f7f\u7528\u3059\u308b\uff08\u4f8b\uff1a<code>Comparable<\/code>, <code>Runnable<\/code>\uff09\u3002<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-56\">\n<li>\u5358\u4e00\u8cac\u4efb\u306e\u539f\u5247\uff1a1\u3064\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306f1\u3064\u306e\u8cac\u4efb\u3092\u8868\u73fe\u3059\u308b\u3088\u3046\u306b\u3059\u308b\u3002<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-57\">\n<li>\u95a2\u6570\u578b\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\uff1a1\u3064\u306e\u30e1\u30bd\u30c3\u30c9\u3060\u3051\u3092\u6301\u3064\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001Java 8\u4ee5\u964d\u306e\u30e9\u30e0\u30c0\u5f0f\u3068\u76f8\u6027\u304c\u826f\u3044\u3002<\/li>\n<\/div>\n\n\n<li>\u4f9d\u5b58\u6027\u6ce8\u5165\uff1a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f7f\u7528\u3057\u3066\u3001\u30af\u30e9\u30b9\u9593\u306e\u7d50\u5408\u5ea6\u3092\u4e0b\u3052\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/li>\n<\/ol>\n<\/div><\/div>\n<\/div>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class DrawingApp {\n    private Drawable shape;\n\n    public DrawingApp(Drawable shape) {\n        this.shape = shape;\n    }\n\n    public void drawShape() {\n        shape.draw();\n    }\n}<\/pre>\n\n\n<div id=\"sgb-css-id-59\">\n<p>\u3053\u306e\u3088\u3046\u306b\u3001<code>DrawingApp<\/code> \u30af\u30e9\u30b9\u306f\u5177\u4f53\u7684\u306a\u56f3\u5f62\u30af\u30e9\u30b9\u3067\u306f\u306a\u304f\u3001<code>Drawable<\/code> \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b\u4f9d\u5b58\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u65b0\u3057\u3044\u56f3\u5f62\u30af\u30e9\u30b9\u3092\u8ffd\u52a0\u3059\u308b\u969b\u306e\u5909\u66f4\u7b87\u6240\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-60\">\n<p>Java\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u9069\u5207\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30b3\u30fc\u30c9\u306e\u67d4\u8edf\u6027\u3068\u518d\u5229\u7528\u6027\u304c\u5927\u5e45\u306b\u5411\u4e0a\u3057\u307e\u3059\u3002\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306f\u300c\u3067\u304d\u308b\u3053\u3068\u300d\u3092\u8868\u73fe\u3059\u308b\u3082\u306e\u3067\u3042\u308a\u3001\u30af\u30e9\u30b9\u306e\u632f\u308b\u821e\u3044\u3092\u5b9a\u7fa9\u3059\u308b\u5f37\u529b\u306a\u30c4\u30fc\u30eb\u3067\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3068\u30af\u30e9\u30b9\u306e\u9055\u3044\u306b\u3064\u3044\u3066\u3055\u3089\u306b\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-61\">\n<h2 class=\"wp-block-heading\" id=\"i-9\">3. \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3068\u30af\u30e9\u30b9\u306e\u9055\u3044\uff1a\u4f7f\u3044\u5206\u3051\u306e\u30dd\u30a4\u30f3\u30c8<\/h2>\n<\/div>\n\n<div id=\"sgb-css-id-62\">\n<p>Java\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306b\u304a\u3044\u3066\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3068\u62bd\u8c61\u30af\u30e9\u30b9\u306f\u4e21\u65b9\u3068\u3082\u62bd\u8c61\u5316\u3092\u5b9f\u73fe\u3059\u308b\u91cd\u8981\u306a\u6982\u5ff5\u3067\u3059\u3002\u3057\u304b\u3057\u3001\u305d\u308c\u305e\u308c\u306b\u7279\u5fb4\u304c\u3042\u308a\u3001\u9069\u5207\u306b\u4f7f\u3044\u5206\u3051\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u67d4\u8edf\u3067\u4fdd\u5b88\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3068\u30af\u30e9\u30b9\uff08\u7279\u306b\u62bd\u8c61\u30af\u30e9\u30b9\uff09\u306e\u9055\u3044\u3068\u3001\u305d\u308c\u305e\u308c\u306e\u4f7f\u7528\u304c\u9069\u3057\u3066\u3044\u308b\u5834\u9762\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-63\">\n<h3 class=\"wp-block-heading\" id=\"i-10\">3.1 \u62bd\u8c61\u30af\u30e9\u30b9\u3068\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u6bd4\u8f03<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-64\">\n<p>\u307e\u305a\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3068\u62bd\u8c61\u30af\u30e9\u30b9\u306e\u4e3b\u306a\u9055\u3044\u3092\u6bd4\u8f03\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-65\">\n<p>1. <strong>\u591a\u91cd\u7d99\u627f<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-66\">\n<p>\u3000\u25cf \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\uff1a\u8907\u6570\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u53ef\u80fd<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-67\">\n<p>\u3000\u25cf \u62bd\u8c61\u30af\u30e9\u30b9\uff1a\u5358\u4e00\u7d99\u627f\u306e\u307f\uff081\u3064\u306e\u62bd\u8c61\u30af\u30e9\u30b9\u3057\u304b\u7d99\u627f\u3067\u304d\u306a\u3044\uff09<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-68\">\n<p>2. <strong>\u30d5\u30a3\u30fc\u30eb\u30c9<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-69\">\n<p>\u3000\u25cf \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\uff1a\u5b9a\u6570\uff08public static final\uff09\u306e\u307f\u5b9a\u7fa9\u53ef\u80fd<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-70\">\n<p>\u3000\u25cf \u62bd\u8c61\u30af\u30e9\u30b9\uff1a\u5b9a\u6570\u304a\u3088\u3073\u5909\u6570\u3092\u5b9a\u7fa9\u53ef\u80fd<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-71\">\n<p>3. <strong>\u30e1\u30bd\u30c3\u30c9<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-72\">\n<p>\u3000\u25cf \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\uff1a\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\uff08Java 8\u4ee5\u964d\uff09\u3001\u9759\u7684\u30e1\u30bd\u30c3\u30c9<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-73\">\n<p>\u3000\u25cf \u62bd\u8c61\u30af\u30e9\u30b9\uff1a\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u304a\u3088\u3073\u5177\u8c61\u30e1\u30bd\u30c3\u30c9<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-74\">\n<p>4. <strong>\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-75\">\n<p>\u3000\u25cf \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\uff1a\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3092\u6301\u3066\u306a\u3044<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-76\">\n<p>\u3000\u25cf \u62bd\u8c61\u30af\u30e9\u30b9\uff1a\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3092\u5b9a\u7fa9\u53ef\u80fd<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-77\">\n<p>\u4ee5\u4e0b\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3068\u62bd\u8c61\u30af\u30e9\u30b9\u306e\u7c21\u5358\u306a\u4f8b\u3067\u3059\u3002<\/p>\n<\/div>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\npublic interface Drawable {\n    void draw();  \/\/ \u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\n    default void printInfo() {  \/\/ \u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\n        System.out.println(\"This is a drawable object\");\n    }\n}\n\n\/\/ \u62bd\u8c61\u30af\u30e9\u30b9\npublic abstract class Shape {\n    protected String color;\n\n    public Shape(String color) {\n        this.color = color;\n    }\n\n    public abstract double getArea();  \/\/ \u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\n\n    public void displayColor() {  \/\/ \u5177\u8c61\u30e1\u30bd\u30c3\u30c9\n        System.out.println(\"Color: \" + color);\n    }\n}<\/pre>\n\n\n<div id=\"sgb-css-id-78\">\n<h3 class=\"wp-block-heading\" id=\"i-11\">3.2 \u3069\u3093\u306a\u6642\u306b\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u9078\u3076\u3079\u304d\u304b<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-79\">\n<p>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5834\u5408\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-83\">\n<div class=\"wp-block-sgb-block-simple sgb-box-simple sgb-box-simple--title-normal sgb-box-simple--with-border\"><div style=\"background-color:var(--wp--preset--color--sango-main);color:#FFF\" class=\"sgb-box-simple__title\">\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u4f7f\u7528\u306b\u9069\u3057\u305f\u5834\u9762<\/div><div class=\"sgb-box-simple__body\" style=\"border-color:var(--wp--preset--color--sango-main);background-color:#FFF\">\n<ol class=\"wp-block-list\"><div id=\"sgb-css-id-80\">\n<li>\u300ccan-do\u300d\u95a2\u4fc2\u3092\u8868\u73fe\u3057\u305f\u3044\u5834\u5408\uff1a<br>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306f\u300c\u3067\u304d\u308b\u3053\u3068\u300d\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001<code>Comparable<\/code>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306f\u300c\u6bd4\u8f03\u3067\u304d\u308b\u300d\u3068\u3044\u3046\u80fd\u529b\u3092\u8868\u73fe\u3057\u307e\u3059\u3002<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-81\">\n<li>\u7570\u306a\u308b\u30af\u30e9\u30b9\u968e\u5c64\u306b\u5171\u901a\u306e\u632f\u308b\u821e\u3044\u3092\u8ffd\u52a0\u3057\u305f\u3044\u5834\u5408\uff1a<br>\u4f8b\u3048\u3070\u3001<code>Serializable<\/code>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306f\u3001\u7570\u306a\u308b\u7d99\u627f\u95a2\u4fc2\u3092\u6301\u3064\u30af\u30e9\u30b9\u306b\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u6a5f\u80fd\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-82\">\n<li>\u5c06\u6765\u7684\u306b\u5b9f\u88c5\u304c\u5909\u66f4\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u5834\u5408\uff1a<br>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u5b9f\u88c5\u306e\u8a73\u7d30\u3092\u96a0\u853d\u3057\u3001\u5f8c\u3067\u5b9f\u88c5\u3092\u5909\u66f4\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/li>\n<\/div>\n\n\n<li>\u591a\u91cd\u7d99\u627f\u304c\u5fc5\u8981\u306a\u5834\u5408\uff1a<br>Java\u3067\u306f\u8907\u6570\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3067\u304d\u308b\u305f\u3081\u3001\u591a\u91cd\u7d99\u627f\u306e\u4ee3\u66ff\u3068\u3057\u3066\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n<\/div><\/div>\n<\/div>\n\n<div id=\"sgb-css-id-84\">\n<p>\u4e00\u65b9\u3001\u62bd\u8c61\u30af\u30e9\u30b9\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5834\u5408\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-88\">\n<div class=\"wp-block-sgb-block-simple sgb-box-simple sgb-box-simple--title-normal sgb-box-simple--with-border\"><div style=\"background-color:var(--wp--preset--color--sango-main);color:#FFF\" class=\"sgb-box-simple__title\">\u62bd\u8c61\u30af\u30e9\u30b9\u4f7f\u7528\u306b\u9069\u3057\u305f\u5834\u9762<\/div><div class=\"sgb-box-simple__body\" style=\"border-color:var(--wp--preset--color--sango-main);background-color:#FFF\">\n<ol class=\"wp-block-list\"><div id=\"sgb-css-id-85\">\n<li>\u300cis-a\u300d\u95a2\u4fc2\u3092\u8868\u73fe\u3057\u305f\u3044\u5834\u5408\uff1a<br>\u62bd\u8c61\u30af\u30e9\u30b9\u306f\u5171\u901a\u306e\u7279\u6027\u3092\u6301\u3064\u4e00\u9023\u306e\u30af\u30e9\u30b9\u306e\u57fa\u5e95\u30af\u30e9\u30b9\u3068\u3057\u3066\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-86\">\n<li>\u5171\u901a\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3084\u5b9f\u88c5\u3092\u63d0\u4f9b\u3057\u305f\u3044\u5834\u5408\uff1a<br>\u62bd\u8c61\u30af\u30e9\u30b9\u3067\u306f\u3001\u30b5\u30d6\u30af\u30e9\u30b9\u3067\u5171\u6709\u3055\u308c\u308b\u72b6\u614b\uff08\u30d5\u30a3\u30fc\u30eb\u30c9\uff09\u3084\u632f\u308b\u821e\u3044\uff08\u30e1\u30bd\u30c3\u30c9\uff09\u3092\u5b9a\u7fa9\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-87\">\n<li>\u975epublic\u306a\u30e1\u30f3\u30d0\u30fc\u3092\u4f7f\u7528\u3057\u305f\u3044\u5834\u5408\uff1a<br>\u62bd\u8c61\u30af\u30e9\u30b9\u3067\u306fprotected\u30e1\u30f3\u30d0\u30fc\u3092\u5b9a\u7fa9\u3067\u304d\u3001\u30b5\u30d6\u30af\u30e9\u30b9\u3067\u306e\u5229\u7528\u3092\u5236\u5fa1\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/div>\n\n\n<li>\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u304c\u5fc5\u8981\u306a\u5834\u5408\uff1a<br>\u62bd\u8c61\u30af\u30e9\u30b9\u306f\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3092\u6301\u3066\u308b\u305f\u3081\u3001\u30b5\u30d6\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u6642\u306b\u5171\u901a\u306e\u521d\u671f\u5316\u51e6\u7406\u3092\u884c\u3048\u307e\u3059\u3002<\/li>\n<\/ol>\n<\/div><\/div>\n<\/div>\n\n<div id=\"sgb-css-id-89\">\n<p>\u4ee5\u4e0b\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3068\u62bd\u8c61\u30af\u30e9\u30b9\u306e\u9069\u5207\u306a\u4f7f\u7528\u4f8b\u3067\u3059\u3002<\/p>\n<\/div>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u9069\u5207\u306a\u4f7f\u7528\u4f8b\npublic interface Sortable {\n    int compareTo(Sortable other);\n}\n\npublic class Student implements Sortable {\n    private String name;\n    private int score;\n\n    \/\/ \u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3001getter\u306a\u3069\u306f\u7701\u7565\n\n    @Override\n    public int compareTo(Sortable other) {\n        if (other instanceof Student) {\n            return Integer.compare(this.score, ((Student) other).score);\n        }\n        return 0;\n    }\n}\n\n\/\/ \u62bd\u8c61\u30af\u30e9\u30b9\u306e\u9069\u5207\u306a\u4f7f\u7528\u4f8b\npublic abstract class Animal {\n    protected String name;\n\n    public Animal(String name) {\n        this.name = name;\n    }\n\n    public abstract void makeSound();\n\n    public void eat() {\n        System.out.println(name + \" is eating.\");\n    }\n}\n\npublic class Dog extends Animal {\n    public Dog(String name) {\n        super(name);\n    }\n\n    @Override\n    public void makeSound() {\n        System.out.println(name + \" barks: Woof!\");\n    }\n}<\/pre>\n\n\n<div id=\"sgb-css-id-90\">\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001<code>Sortable<\/code>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306f\u300c\u6bd4\u8f03\u53ef\u80fd\u300d\u3068\u3044\u3046\u80fd\u529b\u3092\u8868\u73fe\u3057\u3001\u7570\u306a\u308b\u30af\u30e9\u30b9\uff08<code>Student<\/code>\u4ee5\u5916\u306b\u3082\uff09\u306b\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002\u4e00\u65b9\u3001<code>Animal<\/code>\u62bd\u8c61\u30af\u30e9\u30b9\u306f\u5171\u901a\u306e\u7279\u6027\uff08<code>name<\/code>\uff09\u3068\u632f\u308b\u821e\u3044\uff08<code>eat<\/code>\u30e1\u30bd\u30c3\u30c9\uff09\u3092\u6301\u3064\u52d5\u7269\u306e\u57fa\u5e95\u30af\u30e9\u30b9\u3068\u3057\u3066\u6a5f\u80fd\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-91\">\n<p>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3068\u62bd\u8c61\u30af\u30e9\u30b9\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u4f7f\u7528\u3059\u308b\u3053\u3068\u3082\u52b9\u679c\u7684\u3067\u3059\u3002\u4f8b\u3048\u3070\u3001\u62bd\u8c61\u30af\u30e9\u30b9\u3067\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3057\u3001\u5171\u901a\u306e\u5b9f\u88c5\u3092\u63d0\u4f9b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public interface Drawable {\n    void draw();\n}\n\npublic abstract class Shape implements Drawable {\n    protected String color;\n\n    public Shape(String color) {\n        this.color = color;\n    }\n\n    \/\/ Drawable\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5b9f\u88c5\n    @Override\n    public void draw() {\n        System.out.println(\"Drawing a \" + color + \" shape.\");\n    }\n\n    \/\/ \u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\n    public abstract double getArea();\n}\n\npublic class Circle extends Shape {\n    private double radius;\n\n    public Circle(String color, double radius) {\n        super(color);\n        this.radius = radius;\n    }\n\n    @Override\n    public double getArea() {\n        return Math.PI * radius * radius;\n    }\n}<\/pre>\n\n\n<div id=\"sgb-css-id-92\">\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001<code>Shape<\/code>\u62bd\u8c61\u30af\u30e9\u30b9\u304c<code>Drawable<\/code>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3057\u3001\u5171\u901a\u306e<code>draw<\/code>\u30e1\u30bd\u30c3\u30c9\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002\u540c\u6642\u306b\u3001<code>getArea<\/code>\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u3067\u3001\u5177\u4f53\u7684\u306a\u56f3\u5f62\u30af\u30e9\u30b9\uff08<code>Circle<\/code>\u306a\u3069\uff09\u306b\u9762\u7a4d\u8a08\u7b97\u306e\u5b9f\u88c5\u3092\u5f37\u5236\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-93\">\n<p>\u7d50\u8ad6\u3068\u3057\u3066\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3068\u30af\u30e9\u30b9\uff08\u7279\u306b\u62bd\u8c61\u30af\u30e9\u30b9\uff09\u306e\u9078\u629e\u306f\u3001\u8a2d\u8a08\u306e\u76ee\u7684\u3068\u8981\u4ef6\u306b\u5fdc\u3058\u3066\u884c\u3046\u3079\u304d\u3067\u3059\u3002\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306f\u67d4\u8edf\u6027\u3068\u591a\u91cd\u5b9f\u88c5\u3092\u91cd\u8996\u3059\u308b\u5834\u5408\u306b\u3001\u62bd\u8c61\u30af\u30e9\u30b9\u306f\u5171\u901a\u306e\u5b9f\u88c5\u3084\u72b6\u614b\u3092\u5171\u6709\u3059\u308b\u5834\u5408\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002\u9069\u5207\u306b\u4f7f\u3044\u5206\u3051\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u4fdd\u5b88\u6027\u304c\u9ad8\u304f\u3001\u62e1\u5f35\u6027\u306e\u3042\u308bJava\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u8a2d\u8a08\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-94\">\n<h2 class=\"wp-block-heading\" id=\"i-12\">4. \u5b9f\u8df5\u7684\u306a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u6d3b\u7528\u4f8b<\/h2>\n<\/div>\n\n<div id=\"sgb-css-id-95\">\n<p>Java\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306f\u3001\u67d4\u8edf\u3067\u62e1\u5f35\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u305f\u3081\u306e\u5f37\u529b\u306a\u30c4\u30fc\u30eb\u3067\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u5b9f\u969b\u306e\u958b\u767a\u30b7\u30fc\u30f3\u3067\u3088\u304f\u4f7f\u308f\u308c\u308b\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u6d3b\u7528\u4f8b\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u4f8b\u3092\u901a\u3058\u3066\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u304c\u3069\u306e\u3088\u3046\u306b\u3057\u3066\u30b3\u30fc\u30c9\u306e\u54c1\u8cea\u3092\u5411\u4e0a\u3055\u305b\u308b\u304b\u3092\u7406\u89e3\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-96\">\n<h3 class=\"wp-block-heading\" id=\"i-13\">4.1 \u30b9\u30c8\u30e9\u30c6\u30b8\u30fc\u30d1\u30bf\u30fc\u30f3\u306e\u5b9f\u88c5<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-97\">\n<p>\u30b9\u30c8\u30e9\u30c6\u30b8\u30fc\u30d1\u30bf\u30fc\u30f3\u306f\u3001\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u5b9f\u884c\u6642\u306b\u9078\u629e\u53ef\u80fd\u306b\u3059\u308b\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u3067\u3059\u3002\u3053\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u5207\u308a\u66ff\u3048\u304c\u5bb9\u6613\u306b\u306a\u308a\u3001\u65b0\u3057\u3044\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u8ffd\u52a0\u3082\u7c21\u5358\u306b\u884c\u3048\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30b9\u30c8\u30e9\u30c6\u30b8\u30fc\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\npublic interface SortStrategy {\n    void sort(int[] array);\n}\n\n\/\/ \u5177\u4f53\u7684\u306a\u30b9\u30c8\u30e9\u30c6\u30b8\u30fc\u30af\u30e9\u30b9\npublic class BubbleSort implements SortStrategy {\n    @Override\n    public void sort(int[] array) {\n        \/\/ \u30d0\u30d6\u30eb\u30bd\u30fc\u30c8\u306e\u5b9f\u88c5\n    }\n}\n\npublic class QuickSort implements SortStrategy {\n    @Override\n    public void sort(int[] array) {\n        \/\/ \u30af\u30a4\u30c3\u30af\u30bd\u30fc\u30c8\u306e\u5b9f\u88c5\n    }\n}\n\n\/\/ \u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u30af\u30e9\u30b9\npublic class Sorter {\n    private SortStrategy strategy;\n\n    public void setStrategy(SortStrategy strategy) {\n        this.strategy = strategy;\n    }\n\n    public void performSort(int[] array) {\n        strategy.sort(array);\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\nSorter sorter = new Sorter();\nsorter.setStrategy(new BubbleSort());\nsorter.performSort(array);  \/\/ \u30d0\u30d6\u30eb\u30bd\u30fc\u30c8\u3092\u5b9f\u884c\n\nsorter.setStrategy(new QuickSort());\nsorter.performSort(array);  \/\/ \u30af\u30a4\u30c3\u30af\u30bd\u30fc\u30c8\u3092\u5b9f\u884c<\/pre>\n\n\n<div id=\"sgb-css-id-98\">\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001<code>SortStrategy<\/code>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30bd\u30fc\u30c8\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u7c21\u5358\u306b\u5207\u308a\u66ff\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u65b0\u3057\u3044\u30bd\u30fc\u30c8\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u8ffd\u52a0\u3059\u308b\u969b\u3082\u3001\u65e2\u5b58\u306e\u30b3\u30fc\u30c9\u3092\u5909\u66f4\u305b\u305a\u306b\u65b0\u3057\u3044<code>SortStrategy<\/code>\u306e\u5b9f\u88c5\u3092\u8ffd\u52a0\u3059\u308b\u3060\u3051\u3067\u6e08\u307f\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-99\">\n<h3 class=\"wp-block-heading\" id=\"i-14\">4.2 \u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u306e\u5b9f\u73fe<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-100\">\n<p>\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u306f\u3001\u4ed6\u306e\u30b3\u30fc\u30c9\u306b\u5f15\u6570\u3068\u3057\u3066\u6e21\u3055\u308c\u308b\u5b9f\u884c\u53ef\u80fd\u306a\u30b3\u30fc\u30c9\u3067\u3059\u3002Java\u3067\u306f\u3001\u95a2\u6570\u578b\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f7f\u7528\u3057\u3066\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\n@FunctionalInterface\npublic interface Callback {\n    void onComplete(String result);\n}\n\n\/\/ \u975e\u540c\u671f\u51e6\u7406\u3092\u884c\u3046\u30af\u30e9\u30b9\npublic class AsyncProcessor {\n    public void processAsync(String input, Callback callback) {\n        new Thread(() -&gt; {\n            \/\/ \u975e\u540c\u671f\u51e6\u7406\n            String result = input.toUpperCase();\n            \/\/ \u51e6\u7406\u5b8c\u4e86\u5f8c\u3001\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u3092\u547c\u3073\u51fa\u3059\n            callback.onComplete(result);\n        }).start();\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\nAsyncProcessor processor = new AsyncProcessor();\nprocessor.processAsync(\"hello\", result -&gt; {\n    System.out.println(\"\u51e6\u7406\u7d50\u679c: \" + result);\n});\n<\/pre>\n\n\n<div id=\"sgb-css-id-101\">\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001<code>Callback<\/code>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f7f\u7528\u3057\u3066\u975e\u540c\u671f\u51e6\u7406\u306e\u5b8c\u4e86\u3092\u901a\u77e5\u3057\u3066\u3044\u307e\u3059\u3002\u30e9\u30e0\u30c0\u5f0f\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u306e\u5b9f\u88c5\u3092\u3088\u308a\u7c21\u6f54\u306b\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-102\">\n<h3 class=\"wp-block-heading\" id=\"i-15\">4.3 \u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u306e\u6d3b\u7528<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-103\">\n<p>\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u306f\u3001\u540c\u3058\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u6301\u3064\u7570\u306a\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u7d71\u4e00\u7684\u306b\u6271\u3046\u6a5f\u80fd\u3067\u3059\u3002\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u67d4\u8edf\u306a\u30b3\u30fc\u30c9\u8a2d\u8a08\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5171\u901a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\npublic interface Shape {\n    double getArea();\n    void draw();\n}\n\n\/\/ \u5177\u4f53\u7684\u306a\u5b9f\u88c5\npublic class Circle implements Shape {\n    private double radius;\n\n    public Circle(double radius) {\n        this.radius = radius;\n    }\n\n    @Override\n    public double getArea() {\n        return Math.PI * radius * radius;\n    }\n\n    @Override\n    public void draw() {\n        System.out.println(\"\u5186\u3092\u63cf\u753b\");\n    }\n}\n\npublic class Rectangle implements Shape {\n    private double width;\n    private double height;\n\n    public Rectangle(double width, double height) {\n        this.width = width;\n        this.height = height;\n    }\n\n    @Override\n    public double getArea() {\n        return width * height;\n    }\n\n    @Override\n    public void draw() {\n        System.out.println(\"\u56db\u89d2\u5f62\u3092\u63cf\u753b\");\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\npublic class ShapeProcessor {\n    public void processShape(Shape shape) {\n        System.out.println(\"\u9762\u7a4d: \" + shape.getArea());\n        shape.draw();\n    }\n}\n\nShapeProcessor processor = new ShapeProcessor();\nprocessor.processShape(new Circle(5));\nprocessor.processShape(new Rectangle(4, 6));<\/pre>\n\n\n<div id=\"sgb-css-id-104\">\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001<code>Shape<\/code>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u7570\u306a\u308b\u56f3\u5f62\u30af\u30e9\u30b9\u3092\u7d71\u4e00\u7684\u306b\u6271\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u65b0\u3057\u3044\u56f3\u5f62\u30af\u30e9\u30b9\u3092\u8ffd\u52a0\u3059\u308b\u969b\u3082\u3001<code>Shape<\/code>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3059\u308b\u3060\u3051\u3067\u3001\u65e2\u5b58\u306e<code>ShapeProcessor<\/code>\u30af\u30e9\u30b9\u3092\u5909\u66f4\u305b\u305a\u306b\u5229\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-105\">\n<h3 class=\"wp-block-heading\" id=\"i-16\">4.4 \u4f9d\u5b58\u6027\u6ce8\u5165<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-106\">\n<p>\u4f9d\u5b58\u6027\u6ce8\u5165\u306f\u3001\u5916\u90e8\u304b\u3089\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u4f9d\u5b58\u95a2\u4fc2\u3092\u6ce8\u5165\u3059\u308b\u6280\u8853\u3067\u3059\u3002\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u9593\u306e\u7d50\u5408\u5ea6\u3092\u4f4e\u304f\u4fdd\u3064\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30c7\u30fc\u30bf\u30a2\u30af\u30bb\u30b9\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\npublic interface UserRepository {\n    User findById(int id);\n    void save(User user);\n}\n\n\/\/ \u5177\u4f53\u7684\u306a\u5b9f\u88c5\npublic class MySQLUserRepository implements UserRepository {\n    @Override\n    public User findById(int id) {\n        \/\/ MySQL\u304b\u3089\u30e6\u30fc\u30b6\u30fc\u3092\u691c\u7d22\u3059\u308b\u5b9f\u88c5\n    }\n\n    @Override\n    public void save(User user) {\n        \/\/ MySQL\u306b\u30e6\u30fc\u30b6\u30fc\u3092\u4fdd\u5b58\u3059\u308b\u5b9f\u88c5\n    }\n}\n\n\/\/ \u30b5\u30fc\u30d3\u30b9\u30af\u30e9\u30b9\npublic class UserService {\n    private UserRepository userRepository;\n\n    \/\/ \u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\n    public UserService(UserRepository userRepository) {\n        this.userRepository = userRepository;\n    }\n\n    public User getUser(int id) {\n        return userRepository.findById(id);\n    }\n\n    public void registerUser(User user) {\n        userRepository.save(user);\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\nUserRepository repository = new MySQLUserRepository();\nUserService service = new UserService(repository);\nUser user = service.getUser(1);<\/pre>\n\n\n<div id=\"sgb-css-id-107\">\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001<code>UserRepository<\/code>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001<code>UserService<\/code>\u30af\u30e9\u30b9\u304c\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u5177\u4f53\u7684\u306a\u5b9f\u88c5\u306b\u4f9d\u5b58\u305b\u305a\u306b\u6e08\u307f\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30c6\u30b9\u30c8\u304c\u5bb9\u6613\u306b\u306a\u308a\u3001\u5c06\u6765\u7684\u306b\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3092\u5909\u66f4\u3059\u308b\u969b\u3082<code>UserService<\/code>\u30af\u30e9\u30b9\u3092\u5909\u66f4\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-108\">\n<h3 class=\"wp-block-heading\" id=\"i-17\">4.5 \u30a4\u30d9\u30f3\u30c8\u30ea\u30b9\u30ca\u30fc<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-109\">\n<p>\u30a4\u30d9\u30f3\u30c8\u30ea\u30b9\u30ca\u30fc\u306f\u3001\u7279\u5b9a\u306e\u30a4\u30d9\u30f3\u30c8\u304c\u767a\u751f\u3057\u305f\u3068\u304d\u306b\u547c\u3073\u51fa\u3055\u308c\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3059\u3002\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u67d4\u8edf\u306a\u30a4\u30d9\u30f3\u30c8\u51e6\u7406\u30b7\u30b9\u30c6\u30e0\u3092\u69cb\u7bc9\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30a4\u30d9\u30f3\u30c8\u30ea\u30b9\u30ca\u30fc\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\npublic interface ButtonClickListener {\n    void onClick(String buttonName);\n}\n\n\/\/ \u30dc\u30bf\u30f3\u30af\u30e9\u30b9\npublic class Button {\n    private String name;\n    private ButtonClickListener listener;\n\n    public Button(String name) {\n        this.name = name;\n    }\n\n    public void setClickListener(ButtonClickListener listener) {\n        this.listener = listener;\n    }\n\n    public void click() {\n        if (listener != null) {\n            listener.onClick(name);\n        }\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\nButton button = new Button(\"\u9001\u4fe1\");\nbutton.setClickListener(buttonName -&gt; {\n    System.out.println(buttonName + \"\u30dc\u30bf\u30f3\u304c\u30af\u30ea\u30c3\u30af\u3055\u308c\u307e\u3057\u305f\");\n    \/\/ \u9001\u4fe1\u51e6\u7406\u3092\u5b9f\u884c\n});\n\nbutton.click();  \/\/ \"\u9001\u4fe1\u30dc\u30bf\u30f3\u304c\u30af\u30ea\u30c3\u30af\u3055\u308c\u307e\u3057\u305f\" \u3068\u8868\u793a\u3055\u308c\u3001\u9001\u4fe1\u51e6\u7406\u304c\u5b9f\u884c\u3055\u308c\u308b<\/pre>\n\n\n<div id=\"sgb-css-id-110\">\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001<code>ButtonClickListener<\/code>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30dc\u30bf\u30f3\u306e\u30af\u30ea\u30c3\u30af\u30a4\u30d9\u30f3\u30c8\u306b\u5bfe\u3059\u308b\u51e6\u7406\u3092\u67d4\u8edf\u306b\u8a2d\u5b9a\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306f\u3001GUI\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3084Web\u958b\u767a\u3067\u3088\u304f\u4f7f\u7528\u3055\u308c\u308b\u624b\u6cd5\u3067\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-111\">\n<p>\u4ee5\u4e0a\u306e\u5b9f\u8df5\u7684\u306a\u4f8b\u3092\u901a\u3058\u3066\u3001Java\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u304c\u3044\u304b\u306b\u67d4\u8edf\u3067\u518d\u5229\u7528\u53ef\u80fd\u306a\u30b3\u30fc\u30c9\u306e\u4f5c\u6210\u306b\u8ca2\u732e\u3059\u308b\u304b\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u9069\u5207\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u62e1\u5f35\u6027\u304c\u9ad8\u304f\u3001\u4fdd\u5b88\u3057\u3084\u3059\u3044\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u8a2d\u8a08\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001Java 8\u4ee5\u964d\u3067\u5c0e\u5165\u3055\u308c\u305f\u65b0\u6a5f\u80fd\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-112\">\n<h2 class=\"wp-block-heading\" id=\"i-18\">5. Java 8\u4ee5\u964d\u306e\u65b0\u6a5f\u80fd\uff1a\u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\u3068\u9759\u7684\u30e1\u30bd\u30c3\u30c9<\/h2>\n<\/div>\n\n<div id=\"sgb-css-id-113\">\n<p>Java 8\u3067\u5c0e\u5165\u3055\u308c\u305f\u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\u3068\u9759\u7684\u30e1\u30bd\u30c3\u30c9\u306f\u3001Java\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u6a5f\u80fd\u3092\u5927\u5e45\u306b\u62e1\u5f35\u3057\u307e\u3057\u305f\u3002\u3053\u308c\u3089\u306e\u65b0\u6a5f\u80fd\u306b\u3088\u308a\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u8a2d\u8a08\u304c\u3088\u308a\u67d4\u8edf\u306b\u306a\u308a\u3001\u30b3\u30fc\u30c9\u306e\u518d\u5229\u7528\u6027\u304c\u5411\u4e0a\u3057\u307e\u3057\u305f\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-114\">\n<h3 class=\"wp-block-heading\" id=\"i-19\">5.1 \u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\u306e\u5229\u70b9\u3068\u4f7f\u3044\u65b9<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-115\">\n<p>\u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u5185\u3067\u5b9f\u88c5\u3092\u6301\u3064\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002<code>default<\/code>\u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u3066\u5ba3\u8a00\u3055\u308c\u3001\u65e2\u5b58\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b\u65b0\u3057\u3044\u6a5f\u80fd\u3092\u8ffd\u52a0\u3059\u308b\u969b\u306e\u5f8c\u65b9\u4e92\u63db\u6027\u3092\u7dad\u6301\u3059\u308b\u305f\u3081\u306b\u5c0e\u5165\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<\/div>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public interface List&lt;E&gt; extends Collection&lt;E&gt; {\n    default void sort(Comparator&lt;? super E&gt; c) {\n        Collections.sort(this, c);\n    }\n    \/\/ \u305d\u306e\u4ed6\u306e\u30e1\u30bd\u30c3\u30c9...\n}<\/pre>\n\n\n<div id=\"sgb-css-id-116\">\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001<code>List<\/code>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b<code>sort<\/code>\u30e1\u30bd\u30c3\u30c9\u304c\u8ffd\u52a0\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\u306b\u3088\u308a\u3001\u65e2\u5b58\u306e<code>List<\/code>\u5b9f\u88c5\u30af\u30e9\u30b9\u3092\u5909\u66f4\u305b\u305a\u306b\u65b0\u3057\u3044\u6a5f\u80fd\u3092\u8ffd\u52a0\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-119\">\n<div class=\"wp-block-sgb-block-simple sgb-box-simple sgb-box-simple--title-normal sgb-box-simple--with-border\"><div style=\"background-color:#009EF3;color:#FFF\" class=\"sgb-box-simple__title\">\u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\u306e\u4e3b\u306a\u5229\u70b9<\/div><div class=\"sgb-box-simple__body\" style=\"border-color:#009EF3;background-color:#FFF\">\n<ol class=\"wp-block-list\"><div id=\"sgb-css-id-117\">\n<li>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u9032\u5316\uff1a\u65e2\u5b58\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b\u65b0\u3057\u3044\u30e1\u30bd\u30c3\u30c9\u3092\u8ffd\u52a0\u3067\u304d\u308b<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-118\">\n<li>\u30b3\u30fc\u30c9\u306e\u518d\u5229\u7528\uff1a\u5171\u901a\u306e\u5b9f\u88c5\u3092\u63d0\u4f9b\u3067\u304d\u308b<\/li>\n<\/div>\n\n\n<li>\u4e0b\u4f4d\u4e92\u63db\u6027\u306e\u7dad\u6301\uff1a\u65e2\u5b58\u306e\u5b9f\u88c5\u30af\u30e9\u30b9\u3092\u7834\u58ca\u305b\u305a\u306b\u6a5f\u80fd\u3092\u62e1\u5f35\u3067\u304d\u308b<\/li>\n<\/ol>\n<\/div><\/div>\n<\/div>\n\n<div id=\"sgb-css-id-120\">\n<p>\u305f\u3060\u3057\u3001\u8907\u6570\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u304b\u3089\u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\u3092\u7d99\u627f\u3059\u308b\u5834\u5408\u3001\u7af6\u5408\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u5834\u5408\u3001\u5b9f\u88c5\u30af\u30e9\u30b9\u3067\u660e\u793a\u7684\u306b\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public interface A {\n    default void hello() {\n        System.out.println(\"Hello from A\");\n    }\n}\n\npublic interface B {\n    default void hello() {\n        System.out.println(\"Hello from B\");\n    }\n}\n\npublic class C implements A, B {\n    @Override\n    public void hello() {\n        A.super.hello(); \/\/ A\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3059\n    }\n}<\/pre>\n\n\n<div id=\"sgb-css-id-121\">\n<h3 class=\"wp-block-heading\" id=\"i-20\">5.2 \u9759\u7684\u30e1\u30bd\u30c3\u30c9\u3067\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u6a5f\u80fd\u3092\u63d0\u4f9b\u3059\u308b<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-122\">\n<p>Java 8\u4ee5\u964d\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b\u9759\u7684\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b\u95a2\u9023\u3059\u308b\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u30e1\u30bd\u30c3\u30c9\u3092\u76f4\u63a5\u63d0\u4f9b\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n<\/div>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public interface Comparator&lt;T&gt; {\n    int compare(T o1, T o2);\n\n    static &lt;T, U extends Comparable&lt;? super U&gt;&gt; Comparator&lt;T&gt; comparing(\n            Function&lt;? super T, ? extends U&gt; keyExtractor) {\n        return (c1, c2) -&gt; keyExtractor.apply(c1).compareTo(keyExtractor.apply(c2));\n    }\n    \/\/ \u305d\u306e\u4ed6\u306e\u30e1\u30bd\u30c3\u30c9...\n}<\/pre>\n\n\n<div id=\"sgb-css-id-123\">\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001<code>Comparator<\/code>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b\u9759\u7684\u30e1\u30bd\u30c3\u30c9<code>comparing<\/code>\u304c\u8ffd\u52a0\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001<code>Comparator<\/code>\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306e\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u30e1\u30bd\u30c3\u30c9\u3092\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u81ea\u4f53\u306b\u5b9a\u7fa9\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-126\">\n<div class=\"wp-block-sgb-block-simple sgb-box-simple sgb-box-simple--title-normal sgb-box-simple--with-border\"><div style=\"background-color:#009EF3;color:#FFF\" class=\"sgb-box-simple__title\">\u9759\u7684\u30e1\u30bd\u30c3\u30c9\u306e\u4e3b\u306a\u5229\u70b9<\/div><div class=\"sgb-box-simple__body\" style=\"border-color:#009EF3;background-color:#FFF\">\n<ol class=\"wp-block-list\"><div id=\"sgb-css-id-124\">\n<li>\u95a2\u9023\u6a5f\u80fd\u306e\u30ab\u30d7\u30bb\u30eb\u5316\uff1a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b\u76f4\u63a5\u95a2\u9023\u3059\u308b\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u30e1\u30bd\u30c3\u30c9\u3092\u63d0\u4f9b\u3067\u304d\u308b<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-125\">\n<li>\u540d\u524d\u7a7a\u9593\u306e\u6574\u7406\uff1a\u95a2\u9023\u3059\u308b\u9759\u7684\u30e1\u30bd\u30c3\u30c9\u3092\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u5185\u306b\u307e\u3068\u3081\u3089\u308c\u308b<\/li>\n<\/div>\n\n\n<li>\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u30af\u30e9\u30b9\u306e\u4ee3\u66ff\uff1a\u7279\u5b9a\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b\u95a2\u9023\u3059\u308b\u9759\u7684\u30e1\u30bd\u30c3\u30c9\u3092\u5225\u30af\u30e9\u30b9\u306b\u5b9a\u7fa9\u3059\u308b\u5fc5\u8981\u304c\u306a\u304f\u306a\u308b<\/li>\n<\/ol>\n<\/div><\/div>\n<\/div>\n\n<div id=\"sgb-css-id-127\">\n<p>\u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\u3068\u9759\u7684\u30e1\u30bd\u30c3\u30c9\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u8868\u73fe\u529b\u8c4a\u304b\u306a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u8a2d\u8a08\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u30d5\u30a1\u30af\u30c8\u30ea\u30fc\u30e1\u30bd\u30c3\u30c9\u30d1\u30bf\u30fc\u30f3\u3092\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u5185\u3067\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public interface Logger {\n    void log(String message);\n\n    static Logger getFileLogger(String fileName) {\n        \/\/ \u30d5\u30a1\u30a4\u30eb\u30ed\u30ac\u30fc\u306e\u5b9f\u88c5\u3092\u8fd4\u3059\n    }\n\n    static Logger getConsoleLogger() {\n        \/\/ \u30b3\u30f3\u30bd\u30fc\u30eb\u30ed\u30ac\u30fc\u306e\u5b9f\u88c5\u3092\u8fd4\u3059\n    }\n\n    default void logInfo(String message) {\n        log(\"INFO: \" + message);\n    }\n\n    default void logError(String message) {\n        log(\"ERROR: \" + message);\n    }\n}<\/pre>\n\n\n<div id=\"sgb-css-id-128\">\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001\u9759\u7684\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u30ed\u30ac\u30fc\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f5c\u6210\u3057\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\u3067\u5171\u901a\u306e\u30ed\u30b0\u6a5f\u80fd\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-129\">\n<p>Java 9\u4ee5\u964d\u3067\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u5185\u3067private\u30e1\u30bd\u30c3\u30c9\u3082\u4f7f\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u3001\u3055\u3089\u306b\u30b3\u30fc\u30c9\u306e\u518d\u5229\u7528\u6027\u304c\u5411\u4e0a\u3057\u307e\u3057\u305f\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-130\">\n<p>\u3053\u308c\u3089\u306e\u65b0\u6a5f\u80fd\u3092\u4f7f\u7528\u3059\u308b\u969b\u306f\u3001\u4ee5\u4e0b\u306e\u70b9\u306b\u6ce8\u610f\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-133\">\n<div class=\"wp-block-sgb-block-simple sgb-box-simple sgb-box-simple--title-normal sgb-box-simple--with-border\"><div style=\"background-color:var(--wp--preset--color--sango-main);color:#FFF\" class=\"sgb-box-simple__title\">\u65b0\u6a5f\u80fd\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e\u6ce8\u610f\u70b9<\/div><div class=\"sgb-box-simple__body\" style=\"border-color:var(--wp--preset--color--sango-main);background-color:#FFF\">\n<ul class=\"wp-block-list\"><div id=\"sgb-css-id-131\">\n<li>\u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\u306f\u614e\u91cd\u306b\u8ffd\u52a0\u3057\u3001\u65e2\u5b58\u306e\u5b9f\u88c5\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u306a\u3044\u3088\u3046\u306b\u3059\u308b<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-132\">\n<li>\u9759\u7684\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b\u5f37\u304f\u95a2\u9023\u3059\u308b\u6a5f\u80fd\u306e\u307f\u306b\u4f7f\u7528\u3059\u308b<\/li>\n<\/div>\n\n\n<li>\u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3059\u308b\u969b\u306f\u3001<code>@Override<\/code>\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3057\u3066\u660e\u793a\u7684\u306b\u3059\u308b<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div>\n\n<div id=\"sgb-css-id-134\">\n<p>Java\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u65b0\u6a5f\u80fd\u3092\u9069\u5207\u306b\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u67d4\u8edf\u3067\u4fdd\u5b88\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u6a5f\u80fd\u3092\u6d3b\u7528\u3057\u305f\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u8a2d\u8a08\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-135\">\n<h2 class=\"wp-block-heading\" id=\"i-21\">6. \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f7f\u3063\u305f\u8a2d\u8a08\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h2>\n<\/div>\n\n<div id=\"sgb-css-id-136\">\n<p>Java\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u52b9\u679c\u7684\u306b\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u67d4\u8edf\u6027\u304c\u9ad8\u304f\u3001\u4fdd\u5b88\u6027\u306b\u512a\u308c\u305f\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u8a2d\u8a08\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f7f\u3063\u305f\u8a2d\u8a08\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-137\">\n<h3 class=\"wp-block-heading\" id=\"i-22\">6.1 \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u5206\u96e2\u306e\u539f\u5247\uff08ISP\uff09\u306e\u9069\u7528<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-138\">\n<p>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u5206\u96e2\u306e\u539f\u5247\uff08Interface Segregation Principle, ISP\uff09\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u5229\u7528\u3057\u306a\u3044\u30e1\u30bd\u30c3\u30c9\u3078\u306e\u4f9d\u5b58\u3092\u5f37\u5236\u3059\u3079\u304d\u3067\u306a\u3044\u3068\u3044\u3046\u539f\u5247\u3067\u3059\u3002\u3053\u306e\u539f\u5247\u3092\u9069\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u80a5\u5927\u5316\u3092\u9632\u304e\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u7279\u5316\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u8a2d\u8a08\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u826f\u304f\u306a\u3044\u4f8b\uff1a1\u3064\u306e\u5927\u304d\u306a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\npublic interface Worker {\n    void work();\n    void eat();\n    void sleep();\n}\n\n\/\/ \u826f\u3044\u4f8b\uff1a\u6a5f\u80fd\u3054\u3068\u306b\u5206\u5272\u3055\u308c\u305f\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\npublic interface Workable {\n    void work();\n}\n\npublic interface Eatable {\n    void eat();\n}\n\npublic interface Sleepable {\n    void sleep();\n}\n\n\/\/ \u5fc5\u8981\u306a\u6a5f\u80fd\u3060\u3051\u3092\u5b9f\u88c5\npublic class HumanWorker implements Workable, Eatable, Sleepable {\n    \/\/ \u5b9f\u88c5\n}\n\npublic class RobotWorker implements Workable {\n    \/\/ \u5b9f\u88c5\uff08eat()\u3068sleep()\u306f\u4e0d\u8981\uff09\n}<\/pre>\n\n\n<div id=\"sgb-css-id-139\">\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001\u5927\u304d\u306a<code>Worker<\/code>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u6a5f\u80fd\u3054\u3068\u306b\u5206\u5272\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001<code>RobotWorker<\/code>\u30af\u30e9\u30b9\u306f\u4e0d\u8981\u306a<code>eat()<\/code>\u3068<code>sleep()<\/code>\u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u304c\u306a\u304f\u306a\u308a\u3001\u3088\u308a\u9069\u5207\u306a\u62bd\u8c61\u5316\u304c\u5b9f\u73fe\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-140\">\n<h3 class=\"wp-block-heading\" id=\"i-23\">6.2 \u4f9d\u5b58\u6027\u9006\u8ee2\u306e\u539f\u5247\uff08DIP\uff09\u3068\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-141\">\n<p>\u4f9d\u5b58\u6027\u9006\u8ee2\u306e\u539f\u5247\uff08Dependency Inversion Principle, DIP\uff09\u306f\u3001\u4e0a\u4f4d\u30e2\u30b8\u30e5\u30fc\u30eb\u304c\u4e0b\u4f4d\u30e2\u30b8\u30e5\u30fc\u30eb\u306b\u76f4\u63a5\u4f9d\u5b58\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u4e21\u8005\u304c\u62bd\u8c61\uff08\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\uff09\u306b\u4f9d\u5b58\u3059\u3079\u304d\u3068\u3044\u3046\u539f\u5247\u3067\u3059\u3002\u3053\u306e\u539f\u5247\u3092\u9069\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30e2\u30b8\u30e5\u30fc\u30eb\u9593\u306e\u7d50\u5408\u5ea6\u3092\u4e0b\u3052\u3001\u67d4\u8edf\u6027\u3068\u518d\u5229\u7528\u6027\u3092\u9ad8\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u826f\u304f\u306a\u3044\u4f8b\uff1a\u76f4\u63a5\u5177\u8c61\u30af\u30e9\u30b9\u306b\u4f9d\u5b58\npublic class OrderProcessor {\n    private MySQLDatabase database;\n\n    public OrderProcessor() {\n        this.database = new MySQLDatabase();\n    }\n\n    public void processOrder(Order order) {\n        database.save(order);\n    }\n}\n\n\/\/ \u826f\u3044\u4f8b\uff1a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b\u4f9d\u5b58\npublic interface Database {\n    void save(Order order);\n}\n\npublic class OrderProcessor {\n    private Database database;\n\n    public OrderProcessor(Database database) {\n        this.database = database;\n    }\n\n    public void processOrder(Order order) {\n        database.save(order);\n    }\n}<\/pre>\n\n\n<div id=\"sgb-css-id-142\">\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001<code>OrderProcessor<\/code>\u30af\u30e9\u30b9\u304c\u5177\u4f53\u7684\u306a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u5b9f\u88c5\u3067\u306f\u306a\u304f\u3001<code>Database<\/code>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b\u4f9d\u5b58\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u5b9f\u88c5\u3092\u5bb9\u6613\u306b\u5909\u66f4\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u3001\u30c6\u30b9\u30c8\u3082\u5bb9\u6613\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-143\">\n<h3 class=\"wp-block-heading\" id=\"i-24\">\u305d\u306e\u4ed6\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h3>\n<\/div>\n\n\n<ol class=\"wp-block-list is-style-sango-list-simple\"><div id=\"sgb-css-id-144\">\n<li>\u5358\u4e00\u8cac\u4efb\u306e\u539f\u5247\u3092\u5b88\u308b\uff1a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306f\u4e00\u3064\u306e\u8cac\u4efb\u306e\u307f\u3092\u6301\u3064\u3079\u304d\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u76ee\u7684\u304c\u660e\u78ba\u306b\u306a\u308a\u3001\u5909\u66f4\u306e\u5f71\u97ff\u7bc4\u56f2\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u3089\u308c\u307e\u3059\u3002<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-145\">\n<li>\u9069\u5207\u306a\u547d\u540d\uff1a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u540d\u306b\u306f\u901a\u5e38\u3001\u5f62\u5bb9\u8a5e\u3084\u80fd\u529b\u3092\u8868\u3059\u540d\u8a5e\u3092\u4f7f\u7528\u3057\u307e\u3059\uff08\u4f8b\uff1a<code>Comparable<\/code>, <code>Runnable<\/code>, <code>Serializable<\/code>\uff09\u3002<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-146\">\n<li>\u9069\u5207\u306a\u7c92\u5ea6\u3092\u9078\u629e\uff1a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306f\u5fc5\u8981\u4ee5\u4e0a\u306b\u7d30\u304b\u304f\u5206\u5272\u305b\u305a\u3001\u95a2\u9023\u3059\u308b\u64cd\u4f5c\u3092\u307e\u3068\u3081\u308b\u3079\u304d\u3067\u3059\u3002\u305f\u3060\u3057\u3001ISP\u306b\u53cd\u3057\u306a\u3044\u3088\u3046\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-147\">\n<li>\u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\u306e\u6d3b\u7528\uff1aJava 8\u4ee5\u964d\u3067\u306f\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u65e2\u5b58\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b\u65b0\u3057\u3044\u6a5f\u80fd\u3092\u8ffd\u52a0\u3067\u304d\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u65e2\u5b58\u306e\u5b9f\u88c5\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u306a\u3044\u3088\u3046\u614e\u91cd\u306b\u8a2d\u8a08\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/div><\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public interface Logger {\n    void log(String message);\n\n    default void logInfo(String message) {\n        log(\"INFO: \" + message);\n    }\n\n    default void logError(String message) {\n        log(\"ERROR: \" + message);\n    }\n}<\/pre>\n\n\n\n<ol start=\"5\" class=\"wp-block-list is-style-sango-list-simple\"><div id=\"sgb-css-id-148\">\n<li>\u9759\u7684\u30e1\u30bd\u30c3\u30c9\u306e\u6d3b\u7528\uff1a\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u30e1\u30bd\u30c3\u30c9\u3084\u30d5\u30a1\u30af\u30c8\u30ea\u30fc\u30e1\u30bd\u30c3\u30c9\u3092\u63d0\u4f9b\u3059\u308b\u306e\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n<\/div><\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public interface ShapeFactory {\n    static Shape createCircle(double radius) {\n        return new Circle(radius);\n    }\n\n    static Shape createRectangle(double width, double height) {\n        return new Rectangle(width, height);\n    }\n}<\/pre>\n\n\n\n<ol start=\"6\" class=\"wp-block-list is-style-sango-list-simple\"><div id=\"sgb-css-id-149\">\n<li>\u30d0\u30fc\u30b8\u30e7\u30cb\u30f3\u30b0\u306e\u8003\u616e\uff1a\u65b0\u3057\u3044\u30e1\u30bd\u30c3\u30c9\u3092\u8ffd\u52a0\u3059\u308b\u969b\u306f\u3001\u65e2\u5b58\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u306a\u3044\u3088\u3046\u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u304b\u3001\u65b0\u3057\u3044\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u3092\u691c\u8a0e\u3057\u307e\u3059\u3002<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-150\">\n<li>\u30c6\u30b9\u30c8\u5bb9\u6613\u6027\u306e\u5411\u4e0a\uff1a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30e2\u30c3\u30af\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u4f5c\u6210\u304c\u5bb9\u6613\u306b\u306a\u308a\u3001\u30e6\u30cb\u30c3\u30c8\u30c6\u30b9\u30c8\u306e\u54c1\u8cea\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002<\/li>\n<\/div><\/ol>\n\n\n<div id=\"sgb-css-id-151\">\n<p>Java\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f7f\u3063\u305f\u8a2d\u8a08\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u610f\u8b58\u3057\u3064\u3064\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u8981\u4ef6\u3084\u5c06\u6765\u7684\u306a\u62e1\u5f35\u6027\u3092\u8003\u616e\u3057\u3066\u9069\u5207\u306b\u62bd\u8c61\u5316\u3092\u884c\u3046\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u9069\u5207\u306b\u8a2d\u8a08\u3055\u308c\u305f\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306f\u3001\u30b3\u30fc\u30c9\u306e\u67d4\u8edf\u6027\u3001\u518d\u5229\u7528\u6027\u3001\u4fdd\u5b88\u6027\u3092\u5927\u5e45\u306b\u5411\u4e0a\u3055\u305b\u3001\u9577\u671f\u7684\u306a\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u6210\u529f\u306b\u8ca2\u732e\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-152\">\n<h2 class=\"wp-block-heading\" id=\"i-25\">7. \u9ad8\u5ea6\u306a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u6d3b\u7528\u30c6\u30af\u30cb\u30c3\u30af<\/h2>\n<\/div>\n\n<div id=\"sgb-css-id-153\">\n<p>Java\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u57fa\u672c\u3092\u7406\u89e3\u3057\u305f\u3089\u3001\u6b21\u306f\u3088\u308a\u9ad8\u5ea6\u306a\u6d3b\u7528\u30c6\u30af\u30cb\u30c3\u30af\u3092\u5b66\u3073\u307e\u3057\u3087\u3046\u3002\u3053\u3053\u3067\u306f\u3001\u95a2\u6570\u578b\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3001\u30de\u30fc\u30ab\u30fc\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3001\u9ad8\u5ea6\u306a\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u3001\u305d\u3057\u3066\u30b8\u30a7\u30cd\u30ea\u30af\u30b9\u3068\u306e\u7d44\u307f\u5408\u308f\u305b\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-154\">\n<h3 class=\"wp-block-heading\" id=\"i-26\">7.1 \u95a2\u6570\u578b\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3068\u30e9\u30e0\u30c0\u5f0f<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-155\">\n<p>\u95a2\u6570\u578b\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306f\u3001Java 8\u3067\u5c0e\u5165\u3055\u308c\u305f\u91cd\u8981\u306a\u6982\u5ff5\u3067\u3001\u30e9\u30e0\u30c0\u5f0f\u3068\u5bc6\u63a5\u306b\u95a2\u9023\u3057\u3066\u3044\u307e\u3059\u3002\u95a2\u6570\u578b\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306f\u5358\u4e00\u306e\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u3092\u6301\u3064\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3067\u3001<code>@FunctionalInterface<\/code>\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3067\u660e\u793a\u7684\u306b\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">@FunctionalInterface\npublic interface Predicate&lt;T&gt; {\n    boolean test(T t);\n}\n\n\/\/ \u30e9\u30e0\u30c0\u5f0f\u306e\u4f7f\u7528\u4f8b\nPredicate&lt;String&gt; isLongString = s -&gt; s.length() &gt; 10;\nSystem.out.println(isLongString.test(\"Hello, World!\")); \/\/ true<\/pre>\n\n\n<div id=\"sgb-css-id-156\">\n<p>\u4e3b\u8981\u306a\u95a2\u6570\u578b\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b\u306f\u4ee5\u4e0b\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-160\">\n<div class=\"wp-block-sgb-block-simple sgb-box-simple sgb-box-simple--title-normal sgb-box-simple--with-border\"><div style=\"background-color:var(--wp--preset--color--sango-main);color:#FFF\" class=\"sgb-box-simple__title\">\u4e3b\u8981\u306a\u95a2\u6570\u578b\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9<\/div><div class=\"sgb-box-simple__body\" style=\"border-color:var(--wp--preset--color--sango-main);background-color:#FFF\">\n<ul class=\"wp-block-list\"><div id=\"sgb-css-id-157\">\n<li><code>Predicate&lt;T&gt;<\/code>\uff1a <code>boolean test(T t)<\/code><\/li>\n<\/div>\n\n<div id=\"sgb-css-id-158\">\n<li><code>Function&lt;T,R&gt;<\/code>\uff1a <code>R apply(T t)<\/code><\/li>\n<\/div>\n\n<div id=\"sgb-css-id-159\">\n<li><code>Consumer&lt;T&gt;<\/code>\uff1a <code>void accept(T t)<\/code><\/li>\n<\/div>\n\n\n<li><code>Supplier&lt;T&gt;<\/code>\uff1a <code>T get()<\/code><\/li>\n<\/ul>\n<\/div><\/div>\n<\/div>\n\n<div id=\"sgb-css-id-161\">\n<p>\u3053\u308c\u3089\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u7c21\u6f54\u3067\u8868\u73fe\u529b\u8c4a\u304b\u306a\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">List&lt;String&gt; names = Arrays.asList(\"Alice\", \"Bob\", \"Charlie\");\nnames.forEach(name -&gt; System.out.println(\"Hello, \" + name));\n\nList&lt;Integer&gt; lengths = names.stream()\n    .map(String::length)\n    .collect(Collectors.toList());<\/pre>\n\n\n<div id=\"sgb-css-id-162\">\n<h3 class=\"wp-block-heading\" id=\"i-27\">7.2 \u30de\u30fc\u30ab\u30fc\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u4f7f\u7528\u4f8b<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-163\">\n<p>\u30de\u30fc\u30ab\u30fc\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306f\u3001\u30e1\u30bd\u30c3\u30c9\u3092\u6301\u305f\u306a\u3044\u7279\u6b8a\u306a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3067\u3001\u30af\u30e9\u30b9\u306b\u7279\u5b9a\u306e\u6027\u8cea\u3092\u4ed8\u4e0e\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u4ee3\u8868\u7684\u306a\u4f8b\u3068\u3057\u3066\u3001<code>Serializable<\/code>\u3084<code>Cloneable<\/code>\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public interface Serializable {}\n\npublic class User implements Serializable {\n    private String name;\n    private int age;\n    \/\/ ...\n}<\/pre>\n\n\n<div id=\"sgb-css-id-164\">\n<p>\u30ab\u30b9\u30bf\u30e0\u30de\u30fc\u30ab\u30fc\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u3067\u3001\u7279\u5b9a\u306e\u51e6\u7406\u3084\u30c1\u30a7\u30c3\u30af\u3092\u884c\u3046\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public interface Auditable {}\n\npublic class AuditingAspect {\n    @Before(\"execution(* *(..)) &amp;&amp; this(Auditable)\")\n    public void audit(JoinPoint joinPoint) {\n        \/\/ \u76e3\u67fb\u30ed\u30b0\u3092\u8a18\u9332\n    }\n}<\/pre>\n\n\n<div id=\"sgb-css-id-165\">\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001<code>Auditable<\/code>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3057\u305f\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u547c\u3073\u51fa\u3057\u6642\u306b\u3001\u81ea\u52d5\u7684\u306b\u76e3\u67fb\u30ed\u30b0\u304c\u8a18\u9332\u3055\u308c\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-166\">\n<h3 class=\"wp-block-heading\" id=\"i-28\">\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f7f\u3063\u305f\u9ad8\u5ea6\u306a\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-167\">\n<p>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306f\u69d8\u3005\u306a\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u306e\u5b9f\u88c5\u306b\u6d3b\u7528\u3055\u308c\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u4ee3\u8868\u7684\u306a\u4f8b\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-168\">\n<ol class=\"wp-block-list is-style-sango-list-simple\">\n<li>Bridge\u30d1\u30bf\u30fc\u30f3\uff1a\u62bd\u8c61\u5316\u3068\u5b9f\u88c5\u3092\u5206\u96e2\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n<\/div>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">interface DrawAPI {\n    void drawCircle(int x, int y, int radius);\n}\n\nabstract class Shape {\n    protected DrawAPI drawAPI;\n    protected Shape(DrawAPI drawAPI) {\n        this.drawAPI = drawAPI;\n    }\n    public abstract void draw();\n}\n\nclass Circle extends Shape {\n    private int x, y, radius;\n    public Circle(int x, int y, int radius, DrawAPI drawAPI) {\n        super(drawAPI);\n        this.x = x; this.y = y; this.radius = radius;\n    }\n    public void draw() {\n        drawAPI.drawCircle(x, y, radius);\n    }\n}<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list is-style-sango-list-simple\"><div id=\"sgb-css-id-169\">\n<li>Proxy\u30d1\u30bf\u30fc\u30f3\uff1a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3092\u5236\u5fa1\u3057\u307e\u3059\u3002<\/li>\n<\/div><\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">interface Image {\n    void display();\n}\n\nclass RealImage implements Image {\n    private String fileName;\n    public RealImage(String fileName) {\n        this.fileName = fileName;\n        loadFromDisk();\n    }\n    private void loadFromDisk() {\n        System.out.println(\"Loading \" + fileName);\n    }\n    public void display() {\n        System.out.println(\"Displaying \" + fileName);\n    }\n}\n\nclass ProxyImage implements Image {\n    private RealImage realImage;\n    private String fileName;\n    public ProxyImage(String fileName) {\n        this.fileName = fileName;\n    }\n    public void display() {\n        if (realImage == null) {\n            realImage = new RealImage(fileName);\n        }\n        realImage.display();\n    }\n}<\/pre>\n\n\n<div id=\"sgb-css-id-170\">\n<h3 class=\"wp-block-heading\" id=\"i-29\">\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3068\u30b8\u30a7\u30cd\u30ea\u30af\u30b9\u306e\u7d44\u307f\u5408\u308f\u305b<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-171\">\n<p>\u30b8\u30a7\u30cd\u30ea\u30af\u30b9\u3068\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u578b\u5b89\u5168\u6027\u3068\u518d\u5229\u7528\u6027\u3092\u9ad8\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public interface Comparable&lt;T&gt; {\n    int compareTo(T other);\n}\n\npublic class Box&lt;T extends Comparable&lt;T&gt;&gt; {\n    private T content;\n    public void setContent(T content) {\n        this.content = content;\n    }\n    public boolean isContentGreaterThan(Box&lt;T&gt; other) {\n        return this.content.compareTo(other.content) &gt; 0;\n    }\n}<\/pre>\n\n\n<div id=\"sgb-css-id-172\">\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001<code>Comparable&lt;T&gt;<\/code>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3057\u305f\u578b\u306e\u307f\u3092<code>Box<\/code>\u30af\u30e9\u30b9\u3067\u4f7f\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-173\">\n<h3 class=\"wp-block-heading\" id=\"i-30\">\u30d7\u30e9\u30b0\u30a4\u30f3\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3068\u30c6\u30b9\u30bf\u30d3\u30ea\u30c6\u30a3<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-174\">\n<p>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u62e1\u5f35\u6027\u306e\u9ad8\u3044\u30d7\u30e9\u30b0\u30a4\u30f3\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3092\u8a2d\u8a08\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u30e2\u30c3\u30af\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u4f5c\u6210\u304c\u5bb9\u6613\u306b\u306a\u308b\u305f\u3081\u3001\u30c6\u30b9\u30bf\u30d3\u30ea\u30c6\u30a3\u3082\u5411\u4e0a\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public interface Plugin {\n    void execute();\n}\n\npublic class PluginManager {\n    private List&lt;Plugin&gt; plugins = new ArrayList&lt;&gt;();\n    public void registerPlugin(Plugin plugin) {\n        plugins.add(plugin);\n    }\n    public void executePlugins() {\n        for (Plugin plugin : plugins) {\n            plugin.execute();\n        }\n    }\n}\n\n\/\/ \u30c6\u30b9\u30c8\u30b3\u30fc\u30c9\n@Test\npublic void testPluginExecution() {\n    PluginManager manager = new PluginManager();\n    Plugin mockPlugin = mock(Plugin.class);\n    manager.registerPlugin(mockPlugin);\n    manager.executePlugins();\n    verify(mockPlugin).execute();\n}<\/pre>\n\n\n<div id=\"sgb-css-id-175\">\n<p>\u3053\u308c\u3089\u306e\u9ad8\u5ea6\u306a\u30c6\u30af\u30cb\u30c3\u30af\u3092\u7fd2\u5f97\u3059\u308b\u3053\u3068\u3067\u3001Java\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u771f\u306e\u529b\u3092\u5f15\u304d\u51fa\u3057\u3001\u3088\u308a\u67d4\u8edf\u3067\u4fdd\u5b88\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u77e5\u8b58\u3092\u6d3b\u304b\u3057\u305f\u5b9f\u8df5\u7684\u306a\u8ab2\u984c\u306b\u53d6\u308a\u7d44\u3093\u3067\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-176\">\n<h2 class=\"wp-block-heading\" id=\"i-31\">8. \u307e\u3068\u3081\uff1aJava\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u30de\u30b9\u30bf\u30fc\u3078\u306e\u9053<\/h2>\n<\/div>\n\n<div id=\"sgb-css-id-177\">\n<p>Java\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306f\u3001\u67d4\u8edf\u3067\u4fdd\u5b88\u6027\u306e\u9ad8\u3044\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u8a2d\u8a08\u3092\u5b9f\u73fe\u3059\u308b\u5f37\u529b\u306a\u30c4\u30fc\u30eb\u3067\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3092\u901a\u3058\u3066\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u57fa\u672c\u6982\u5ff5\u304b\u3089\u9ad8\u5ea6\u306a\u6d3b\u7528\u30c6\u30af\u30cb\u30c3\u30af\u307e\u3067\u5e45\u5e83\u304f\u5b66\u3093\u3067\u304d\u307e\u3057\u305f\u3002\u3053\u3053\u3067\u306f\u3001Java\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u30de\u30b9\u30bf\u30fc\u306b\u5411\u3051\u305f\u6b21\u306e\u30b9\u30c6\u30c3\u30d7\u3068\u3001\u7406\u89e3\u3092\u6df1\u3081\u308b\u305f\u3081\u306e\u5b9f\u8df5\u7684\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-178\">\n<h3 class=\"wp-block-heading\" id=\"i-32\">8.1 \u5b66\u7fd2\u306e\u30dd\u30a4\u30f3\u30c8\u3068\u6b21\u306e\u30b9\u30c6\u30c3\u30d7<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-179\">\n<p>1. <strong>\u57fa\u672c\u304b\u3089\u5fdc\u7528\u3078<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-180\">\n<p>\u3000\u25cf \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u5b9a\u7fa9\u3001\u5b9f\u88c5\u3001\u591a\u91cd\u5b9f\u88c5\u306e\u57fa\u672c\u3092\u5fb9\u5e95\u7684\u306b\u7406\u89e3\u3059\u308b<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-181\">\n<p>\u3000\u25cf \u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\u3068\u9759\u7684\u30e1\u30bd\u30c3\u30c9\u306e\u6d3b\u7528\u65b9\u6cd5\u3092\u7fd2\u5f97\u3059\u308b<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-182\">\n<p>\u3000\u25cf \u8a2d\u8a08\u539f\u5247\uff08ISP, DIP, \u5358\u4e00\u8cac\u4efb\u306e\u539f\u5247\uff09\u3092\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u8a2d\u8a08\u306b\u9069\u7528\u3059\u308b<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-183\">\n<p>2. <strong>\u9ad8\u5ea6\u306a\u6982\u5ff5\u306e\u63a2\u6c42<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-184\">\n<p>\u3000\u25cf \u95a2\u6570\u578b\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3068\u30e9\u30e0\u30c0\u5f0f\u306e\u6d3b\u7528<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-185\">\n<p>\u3000\u25cf \u30b8\u30a7\u30cd\u30ea\u30af\u30b9\u3068\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u7d44\u307f\u5408\u308f\u305b<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-186\">\n<p>\u3000\u25cf \u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u306b\u304a\u3051\u308b\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u5f79\u5272<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-187\">\n<p>3. <strong>\u6b21\u306e\u30b9\u30c6\u30c3\u30d7<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-188\">\n<p>\u3000\u25cf \u30ea\u30d5\u30ec\u30af\u30b7\u30e7\u30f3\u3001\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3001\u30e2\u30b8\u30e5\u30fc\u30eb\u30b7\u30b9\u30c6\u30e0\u306a\u3069\u306e\u4e0a\u7d1aJava\u30c8\u30d4\u30c3\u30af\u3092\u5b66\u3076<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-189\">\n<p>\u3000\u25cf \u300cEffective Java\u300dby Joshua Bloch\u3084\u300cDesign Patterns\u300dby Gang of Four\u306a\u3069\u306e\u66f8\u7c4d\u3092\u8aad\u3080<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-190\">\n<p>\u3000\u25cf Oracle Java Tutorial, Baeldung, Java Code Geeks\u306a\u3069\u306e\u30aa\u30f3\u30e9\u30a4\u30f3\u30ea\u30bd\u30fc\u30b9\u3092\u6d3b\u7528\u3059\u308b<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-191\">\n<h3 class=\"wp-block-heading\" id=\"i-33\">8.2 \u5b9f\u8df5\u7684\u306a\u8ab2\u984c\u3067\u7406\u89e3\u3092\u6df1\u3081\u308b\u65b9\u6cd5<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-192\">\n<p>1. <strong>\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u30d9\u30fc\u30b9\u306e\u5b66\u7fd2<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-193\">\n<p>\u3000\u25cf \u30d7\u30e9\u30b0\u30a4\u30f3\u5f0f\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3092\u5b9f\u88c5\u3059\u308b<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-194\">\n<p>\u3000\u25cf \u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u3092\u6d3b\u7528\u3057\u305f\u30df\u30cb\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u53d6\u308a\u7d44\u3080<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-195\">\n<p>\u3000\u25cf \u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u8a2d\u8a08\u3092\u5206\u6790\u3057\u3001\u6539\u5584\u6848\u3092\u8003\u3048\u308b<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-196\">\n<p>2. <strong>\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u6f14\u7fd2<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-197\">\n<p>\u3000\u25cf 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