{"id":766,"date":"2024-11-15T17:06:37","date_gmt":"2024-11-15T08:06:37","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=766"},"modified":"2025-03-24T08:52:52","modified_gmt":"2025-03-23T23:52:52","slug":"%e3%80%90java%e5%85%a5%e9%96%80%e3%80%91%e6%96%87%e5%ad%97%e3%82%b3%e3%83%bc%e3%83%89%e5%a4%89%e6%8f%9b%e3%81%ae%e5%ae%9f%e8%b7%b5%e3%82%ac%e3%82%a4%e3%83%892024%e5%b9%b4%e7%89%88-%e6%96%87%e5%ad%97","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=766","title":{"rendered":"\u3010Java\u5165\u9580\u3011\u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u306e\u5b9f\u8df5\u30ac\u30a4\u30c92024\u5e74\u7248 &#8211; \u6587\u5b57\u5316\u3051\u30c8\u30e9\u30d6\u30eb\u89e3\u6c7a\u306e\u305f\u3081\u306e7\u3064\u306e\u624b\u9806"},"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-4\">\uff11\uff0eJava\u3067\u306e\u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u306e\u57fa\u790e\u77e5\u8b58<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-5\">1.1 \u6587\u5b57\u30b3\u30fc\u30c9\u3068\u306f\uff1f\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306e\u57fa\u672c\u3092\u7406\u89e3\u3057\u3088\u3046<\/a>      <\/li>      <li>        <a href=\"#i-8\">1.2 Java\u304c\u6a19\u6e96\u3067\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u4e3b\u8981\u306a\u6587\u5b57\u30b3\u30fc\u30c9\u898f\u683c<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-9\">1.3 \u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u304c\u5fc5\u8981\u306b\u306a\u308b\u30b1\u30fc\u30b95\u9078<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-10\">\uff12\uff0eJava\u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u306e\u5b9f\u88c5\u65b9\u6cd5<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-11\">2.1 String.getBytes()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u305f\u57fa\u672c\u7684\u306a\u5909\u63db\u624b\u9806<\/a>      <\/li>      <li>        <a href=\"#i-12\">2.2 InputStreamReader\u3068OutputStreamWriter\u306e\u6d3b\u7528\u8853<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-13\">2.3 Files.readAllLines()\u306b\u3088\u308b\u52b9\u7387\u7684\u306a\u30d5\u30a1\u30a4\u30eb\u8aad\u307f\u8fbc\u307f\u3068\u6587\u5b57\u30b3\u30fc\u30c9\u6307\u5b9a<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-14\">\uff13\uff0e\u6587\u5b57\u5316\u3051\u30c8\u30e9\u30d6\u30eb\u306e\u539f\u56e0\u3068\u89e3\u6c7a\u7b56<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-15\">3.1 \u3088\u304f\u3042\u308b\u6587\u5b57\u5316\u3051\u306e\u539f\u56e0\u3068\u8a3a\u65ad\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-17\">3.2 \u74b0\u5883\u4f9d\u5b58\u6587\u5b57\u306e\u6b63\u3057\u3044\u53d6\u308a\u6271\u3044\u65b9<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-18\">3.3 \u6587\u5b57\u30b3\u30fc\u30c9\u5224\u5b9a\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u6d3b\u7528\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-20\">\uff14\uff0e\u5b9f\u8df5\u7684\u306a\u30b3\u30fc\u30c9\u4f8b\u3068\u5fdc\u7528\u30c6\u30af\u30cb\u30c3\u30af<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-21\">4.1 Shift-JIS\u304b\u3089UTF-8\u3078\u306e\u5909\u63db\u5b9f\u88c5\u4f8b<\/a>      <\/li>      <li>        <a href=\"#i-22\">4.2 \u30d0\u30a4\u30ca\u30ea\u30c7\u30fc\u30bf\u3092\u542b\u3080\u30c6\u30ad\u30b9\u30c8\u306e\u5b89\u5168\u306a\u5909\u63db\u65b9\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-23\">4.3 \u5927\u5bb9\u91cf\u30d5\u30a1\u30a4\u30eb\u306e\u52b9\u7387\u7684\u306a\u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-24\">\uff15\uff0e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-25\">5.1 \u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u51e6\u7406\u306e\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>      <li>        <a href=\"#i-28\">5.2 \u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u8003\u616e\u3057\u305f\u5b9f\u88c5\u65b9\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-29\">5.3 \u30e6\u30cb\u30c3\u30c8\u30c6\u30b9\u30c8\u306b\u3088\u308b\u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u306e\u54c1\u8cea\u62c5\u4fdd<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-31\">\uff16\uff0e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u30ac\u30a4\u30c9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-32\">6.1 \u5909\u63db\u6642\u306e\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u5b9f\u88c5\u4f8b<\/a>      <\/li>      <li>        <a href=\"#i-34\">6.2 \u6587\u5b57\u5316\u3051\u767a\u751f\u6642\u306e\u30c7\u30d0\u30c3\u30b0\u624b\u9806<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-36\">6.3 \u74b0\u5883\u9593\u3067\u306e\u6587\u5b57\u30b3\u30fc\u30c9\u306e\u9055\u3044\u306b\u3088\u308b\u30c8\u30e9\u30d6\u30eb\u5bfe\u7b56<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-39\">\uff17\uff0e\u307e\u3068\u3081\u3068\u88dc\u8db3\u60c5\u5831<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-40\">7.1 \u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u5b9f\u88c5\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u307e\u3068\u3081<\/a>      <\/li>      <li>        <a href=\"#i-43\">7.2 Java 8\u4ee5\u964d\u3067\u306e\u65b0\u6a5f\u80fd\u3068\u6539\u5584\u70b9<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-46\">7.3 \u3055\u3089\u306a\u308b\u5b66\u7fd2\u306e\u305f\u3081\u306e\u30ea\u30bd\u30fc\u30b9\u7d39\u4ecb<\/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>\u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u306f\u3001Java\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u306b\u304a\u3044\u3066\u907f\u3051\u3066\u901a\u308c\u306a\u3044\u91cd\u8981\u306a\u30c6\u30fc\u30de\u3067\u3059\u3002\u7279\u306b\u3001\u7570\u306a\u308b\u30b7\u30b9\u30c6\u30e0\u9593\u3067\u306e\u30c7\u30fc\u30bf\u9023\u643a\u3084\u3001\u30ec\u30ac\u30b7\u30fc\u30b7\u30b9\u30c6\u30e0\u3068\u306e\u7d71\u5408\u306b\u304a\u3044\u3066\u3001\u9069\u5207\u306a\u6587\u5b57\u30b3\u30fc\u30c9\u51e6\u7406\u306f\u5fc5\u9808\u306e\u30b9\u30ad\u30eb\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-3\">\n<h4 class=\"wp-block-heading\" id=\"i-1\">\u306a\u305c\u4eca\u3001\u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u304c\u91cd\u8981\u306a\u306e\u304b\uff1f<\/h4>\n<\/div>\n\n<div id=\"sgb-css-id-4\">\n<p>\u3000<strong>1. \u30b7\u30b9\u30c6\u30e0\u7d71\u5408\u306e\u5897\u52a0<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-5\">\n<p>\u3000\u3000\u25cf \u30af\u30e9\u30a6\u30c9\u30b5\u30fc\u30d3\u30b9\u3068\u306e\u9023\u643a<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-6\">\n<p>\u3000\u3000\u25cf \u30de\u30a4\u30af\u30ed\u30b5\u30fc\u30d3\u30b9\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306e\u63a1\u7528<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-7\">\n<p>\u3000\u3000\u25cf \u30ec\u30ac\u30b7\u30fc\u30b7\u30b9\u30c6\u30e0\u306e\u30e2\u30c0\u30ca\u30a4\u30ba<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-8\">\n<p>\u3000<strong>2. \u30b0\u30ed\u30fc\u30d0\u30eb\u5316\u3078\u306e\u5bfe\u5fdc<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-9\">\n<p>\u3000\u3000\u25cf \u591a\u8a00\u8a9e\u5bfe\u5fdc\u306e\u5fc5\u8981\u6027<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-10\">\n<p>\u3000\u3000\u25cf \u56fd\u969b\u7684\u306a\u30c7\u30fc\u30bf\u4ea4\u63db\u306e\u5897\u52a0<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-11\">\n<p>\u3000\u3000\u25cf \u6587\u5b57\u5316\u3051\u554f\u984c\u306e\u9632\u6b62<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-12\">\n<p>\u3000<strong>3. \u30c7\u30fc\u30bf\u54c1\u8cea\u306e\u62c5\u4fdd<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-13\">\n<p>\u3000\u3000\u25cf \u6b63\u78ba\u306a\u30c7\u30fc\u30bf\u5909\u63db\u306e\u8981\u6c42<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-14\">\n<p>\u3000\u3000\u25cf \u6587\u5b57\u5316\u3051\u306b\u3088\u308b\u30d3\u30b8\u30cd\u30b9\u30ea\u30b9\u30af\u306e\u56de\u907f<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-15\">\n<p>\u3000\u3000\u25cf \u30b7\u30b9\u30c6\u30e0\u9593\u9023\u643a\u306e\u4fe1\u983c\u6027\u78ba\u4fdd<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-16\">\n<h4 class=\"wp-block-heading\" id=\"i-2\">\u672c\u8a18\u4e8b\u3067\u5b66\u3079\u308b\u3053\u3068<\/h4>\n<\/div>\n\n<div id=\"sgb-css-id-17\">\n<p>\u3000\u672c\u8a18\u4e8b\u3067\u306f\u3001Java\u958b\u767a\u8005\u304c\u76f4\u9762\u3059\u308b\u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u306e\u8ab2\u984c\u306b\u5bfe\u3057\u3066\u3001\u5b9f\u8df5\u7684\u306a\u89e3\u6c7a\u65b9\u6cd5\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-18\">\n<p>\u3000\u3000\u25cf \u57fa\u790e\u304b\u3089\u5fdc\u7528\u307e\u3067\u6bb5\u968e\u7684\u306b\u5b66\u7fd2<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-19\">\n<p>\u3000\u3000\u25cf \u5b9f\u88c5\u4f8b\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u306e\u7d39\u4ecb<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-20\">\n<p>\u3000\u3000\u25cf \u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u624b\u6cd5\u306e\u89e3\u8aac<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-21\">\n<p>\u3000\u3000\u25cf \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u30c6\u30af\u30cb\u30c3\u30af<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-22\">\n<p>\u3000\u521d\u5fc3\u8005\u304b\u3089\u4e2d\u7d1a\u8005\u307e\u3067\u3001\u5b9f\u52d9\u3067\u5fc5\u8981\u3068\u306a\u308b\u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u306e\u77e5\u8b58\u3092\u4f53\u7cfb\u7684\u306b\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-23\">\n<h4 class=\"wp-block-heading\" id=\"i-3\">\u524d\u63d0\u77e5\u8b58<\/h4>\n<\/div>\n\n<div id=\"sgb-css-id-24\">\n<p>\u3000\u672c\u8a18\u4e8b\u3092\u7406\u89e3\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u306a\u524d\u63d0\u77e5\u8b58\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-25\">\n<p>\u3000\u3000\u25cf Java\u57fa\u672c\u6587\u6cd5\u306e\u7406\u89e3<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-26\">\n<p>\u3000\u3000\u25cf \u30d5\u30a1\u30a4\u30eb\u5165\u51fa\u529b\u306e\u57fa\u790e\u77e5\u8b58<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-27\">\n<p>\u3000\u3000\u25cf \u4f8b\u5916\u51e6\u7406\u306e\u57fa\u672c\u6982\u5ff5<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-28\">\n<p>\u305d\u308c\u3067\u306f\u3001Java\u3067\u306e\u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u306b\u3064\u3044\u3066\u3001\u5b9f\u8df5\u7684\u306a\u624b\u9806\u3068\u3068\u3082\u306b\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-29\">\n<h2 class=\"wp-block-heading\" id=\"i-4\">\uff11\uff0eJava\u3067\u306e\u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u306e\u57fa\u790e\u77e5\u8b58<\/h2>\n<\/div>\n\n<div id=\"sgb-css-id-30\">\n<h3 class=\"wp-block-heading\" id=\"i-5\">1.1 \u6587\u5b57\u30b3\u30fc\u30c9\u3068\u306f\uff1f\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306e\u57fa\u672c\u3092\u7406\u89e3\u3057\u3088\u3046<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-31\">\n<p>\u6587\u5b57\u30b3\u30fc\u30c9\u3068\u306f\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u4e0a\u3067\u30c6\u30ad\u30b9\u30c8\u30c7\u30fc\u30bf\u3092\u6271\u3046\u305f\u3081\u306e\u898f\u5247\u3067\u3059\u3002\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306f\u5185\u90e8\u3067\u306f\u3059\u3079\u3066\u306e\u30c7\u30fc\u30bf\u3092\u30d0\u30a4\u30ca\u30ea\uff080\u30681\uff09\u3067\u51e6\u7406\u3059\u308b\u305f\u3081\u3001\u4eba\u9593\u304c\u8aad\u3081\u308b\u6587\u5b57\u3068\u306e\u9593\u3067\u76f8\u4e92\u5909\u63db\u304c\u5fc5\u8981\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-32\">\n<h4 class=\"wp-block-heading\" id=\"i-6\">\u6587\u5b57\u30b3\u30fc\u30c9\u306e\u57fa\u672c\u6982\u5ff5<\/h4>\n<\/div>\n\n<div id=\"id-ef547e21-0811-43ec-925c-97c269cbb614\"><div id=\"sgb-css-id-33\">\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u7528\u8a9e<\/th><th>\u8aac\u660e<\/th><\/tr><\/thead><tbody><tr><td>\u6587\u5b57\u30bb\u30c3\u30c8<\/td><td>\u6587\u5b57\u306e\u96c6\u5408\uff08\u4f8b\uff1aASCII\u3001JIS X 0208\uff09<\/td><\/tr><tr><td>\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0<\/td><td>\u6587\u5b57\u3092\u30d0\u30a4\u30c8\u5217\u306b\u5909\u63db\u3059\u308b\u898f\u5247<\/td><\/tr><tr><td>\u30c7\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0<\/td><td>\u30d0\u30a4\u30c8\u5217\u3092\u6587\u5b57\u306b\u5909\u63db\u3059\u308b\u898f\u5247<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div><\/div>\n\n<div id=\"sgb-css-id-34\">\n<h4 class=\"wp-block-heading\" id=\"i-7\">\u5909\u63db\u306e\u57fa\u672c\u30d7\u30ed\u30bb\u30b9<\/h4>\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=\"\">\u6587\u5b57\u5217 \u2192 [\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0] \u2192 \u30d0\u30a4\u30c8\u5217\n\u30d0\u30a4\u30c8\u5217 \u2192 [\u30c7\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0] \u2192 \u6587\u5b57\u5217<\/pre>\n\n\n<div id=\"sgb-css-id-35\">\n<h3 class=\"wp-block-heading\" id=\"i-8\">1.2 Java\u304c\u6a19\u6e96\u3067\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u4e3b\u8981\u306a\u6587\u5b57\u30b3\u30fc\u30c9\u898f\u683c<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-36\">\n<p>Java\u306f\u4ee5\u4e0b\u306e\u4e3b\u8981\u306a\u6587\u5b57\u30b3\u30fc\u30c9\u898f\u683c\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-37\">\n<p><strong>\u30001. UTF-8<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-38\">\n<p>\u3000\u3000\u25cf \u53ef\u5909\u9577\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-39\">\n<p>\u3000\u3000\u25cf ASCII\u4e92\u63db<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-40\">\n<p>\u3000\u3000\u25cf \u4e16\u754c\u4e2d\u306e\u6587\u5b57\u3092\u6271\u3048\u308b<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-41\">\n<p>\u3000\u3000\u25cf Web\u3067\u306e\u6a19\u6e96\u7684\u306a\u6587\u5b57\u30b3\u30fc\u30c9<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-42\">\n<p><strong>\u30002. UTF-16<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-43\">\n<p>\u3000\u3000\u25cf Java\u306e\u5185\u90e8\u6587\u5b57\u8868\u73fe<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-44\">\n<p>\u3000\u3000\u25cf 16\u30d3\u30c3\u30c8\u5358\u4f4d\u3067\u6587\u5b57\u3092\u8868\u73fe<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-45\">\n<p>\u3000\u3000\u25cf \u30b5\u30ed\u30b2\u30fc\u30c8\u30da\u30a2\u3067\u62e1\u5f35\u6587\u5b57\u3092\u8868\u73fe<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-46\">\n<p><strong>\u30003. Shift-JIS<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-47\">\n<p>\u3000\u3000\u25cf \u65e5\u672c\u8a9eWindows\u74b0\u5883\u3067\u306e\u6a19\u6e96<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-48\">\n<p>\u3000\u3000\u25cf \u30ec\u30ac\u30b7\u30fc\u30b7\u30b9\u30c6\u30e0\u3068\u306e\u4e92\u63db\u6027\u306b\u91cd\u8981<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-49\">\n<p><strong>\u30004. ISO-8859-1<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-50\">\n<p>\u3000\u3000\u25cf \u897f\u6b27\u8a00\u8a9e\u7528\u306e8\u30d3\u30c3\u30c8\u6587\u5b57\u30b3\u30fc\u30c9<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-51\">\n<p>\u3000\u3000\u25cf \u30ec\u30ac\u30b7\u30fc\u30b7\u30b9\u30c6\u30e0\u3067\u3088\u304f\u4f7f\u7528<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-52\">\n<p><strong>\u30005. EUC-JP<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-53\">\n<p>\u3000\u3000\u25cf UNIX\u30b7\u30b9\u30c6\u30e0\u3067\u306e\u65e5\u672c\u8a9e\u6a19\u6e96<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-54\">\n<p>\u3000\u3000\u25cf \u4e3b\u306b\u30ec\u30ac\u30b7\u30fc\u30b7\u30b9\u30c6\u30e0\u3067\u4f7f\u7528<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-55\">\n<h3 class=\"wp-block-heading\" id=\"i-9\">1.3 \u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u304c\u5fc5\u8981\u306b\u306a\u308b\u30b1\u30fc\u30b95\u9078<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-56\">\n<p><strong>1. \u30d5\u30a1\u30a4\u30eb\u5165\u51fa\u529b\u51e6\u7406<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-57\">\n<p>\u3000\u25cf \u30c6\u30ad\u30b9\u30c8\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u66f8\u304d<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-58\">\n<p>\u3000\u25cf \u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306e\u51e6\u7406<\/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=\"\">   \/\/ \u30d5\u30a1\u30a4\u30eb\u8aad\u307f\u8fbc\u307f\u6642\u306e\u6587\u5b57\u30b3\u30fc\u30c9\u6307\u5b9a\n   try (BufferedReader reader = new BufferedReader(\n           new InputStreamReader(\n               new FileInputStream(\"input.txt\"), \"UTF-8\"))) {\n       \/\/ \u30d5\u30a1\u30a4\u30eb\u51e6\u7406\n   }<\/pre>\n\n\n<div id=\"sgb-css-id-59\">\n<p><strong>2. Web API\u3068\u306e\u901a\u4fe1<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-60\">\n<p>\u3000\u25cf HTTP\u30ea\u30af\u30a8\u30b9\u30c8\/\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u51e6\u7406<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-61\">\n<p>\u3000\u25cf JSON\u30c7\u30fc\u30bf\u306e\u9001\u53d7\u4fe1<\/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=\"\">   \/\/ Web API\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u6587\u5b57\u30b3\u30fc\u30c9\u51e6\u7406\n   String response = new String(\n       responseBytes, StandardCharsets.UTF_8);<\/pre>\n\n\n<div id=\"sgb-css-id-62\">\n<p><strong>3. \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u9023\u643a<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-63\">\n<p>\u3000\u25cf DBMS\u3068\u306e\u6587\u5b57\u30b3\u30fc\u30c9\u306e\u9055\u3044\u3092\u5438\u53ce<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-64\">\n<p>\u3000\u25cf \u7570\u306a\u308b\u6587\u5b57\u30b3\u30fc\u30c9\u9593\u306e\u30c7\u30fc\u30bf\u79fb\u884c<\/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\u30d9\u30fc\u30b9\u63a5\u7d9a\u6642\u306e\u6587\u5b57\u30b3\u30fc\u30c9\u6307\u5b9a\n   String url = \"jdbc:mysql:\/\/localhost\/db?characterEncoding=UTF-8\";<\/pre>\n\n\n<div id=\"sgb-css-id-65\">\n<p><strong>4. \u30ec\u30ac\u30b7\u30fc\u30b7\u30b9\u30c6\u30e0\u3068\u306e\u9023\u643a<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-66\">\n<p>\u3000\u25cf \u53e4\u3044\u30b7\u30b9\u30c6\u30e0\u3068\u306e\u6587\u5b57\u30b3\u30fc\u30c9\u306e\u9055\u3044\u3092\u89e3\u6d88<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-67\">\n<p>\u3000\u25cf \u7570\u306a\u308b\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u9593\u306e\u30c7\u30fc\u30bf\u4ea4\u63db<\/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=\"\">   \/\/ \u30ec\u30ac\u30b7\u30fc\u30b7\u30b9\u30c6\u30e0\u306e\u30c7\u30fc\u30bf\u3092\u73fe\u884c\u30b7\u30b9\u30c6\u30e0\u7528\u306b\u5909\u63db\n   String modernText = new String(\n       legacyData.getBytes(\"Shift-JIS\"), \n       StandardCharsets.UTF_8);<\/pre>\n\n\n<div id=\"sgb-css-id-68\">\n<p><strong>5. \u56fd\u969b\u5316\u5bfe\u5fdc<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-69\">\n<p>\u3000\u25cf \u591a\u8a00\u8a9e\u5bfe\u5fdc\u30b7\u30b9\u30c6\u30e0\u306e\u958b\u767a<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-70\">\n<p>\u3000\u25cf \u5730\u57df\u3054\u3068\u306e\u6587\u5b57\u30b3\u30fc\u30c9\u8981\u4ef6\u3078\u306e\u5bfe\u5fdc<\/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=\"\">   \/\/ \u5730\u57df\u306b\u5fdc\u3058\u305f\u6587\u5b57\u30b3\u30fc\u30c9\u51e6\u7406\n   Charset charset = Charset.forName(\n       Locale.getDefault().toString());<\/pre>\n\n\n<div id=\"sgb-css-id-71\">\n<p>\u3053\u308c\u3089\u306e\u57fa\u790e\u77e5\u8b58\u3092\u8e0f\u307e\u3048\u305f\u4e0a\u3067\u3001\u6b21\u7ae0\u3067\u306f\u5177\u4f53\u7684\u306a\u5b9f\u88c5\u65b9\u6cd5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-72\">\n<h2 class=\"wp-block-heading\" id=\"i-10\">\uff12\uff0eJava\u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u306e\u5b9f\u88c5\u65b9\u6cd5<\/h2>\n<\/div>\n\n<div id=\"sgb-css-id-73\">\n<h3 class=\"wp-block-heading\" id=\"i-11\">2.1 String.getBytes()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u305f\u57fa\u672c\u7684\u306a\u5909\u63db\u624b\u9806<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-74\">\n<p><code>String.getBytes()<\/code>\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u6700\u3082\u57fa\u672c\u7684\u306a\u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u624b\u6bb5\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u4e3b\u8981\u306a\u4f7f\u7528\u30d1\u30bf\u30fc\u30f3\u3092\u793a\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 class CharacterEncodingExample {\n    public static void main(String[] args) throws Exception {\n        String originalText = \"\u3053\u3093\u306b\u3061\u306f\u4e16\u754c\"; \/\/ \u30b5\u30f3\u30d7\u30eb\u30c6\u30ad\u30b9\u30c8\n\n        \/\/ \u65b9\u6cd51: \u660e\u793a\u7684\u306a\u6587\u5b57\u30b3\u30fc\u30c9\u6307\u5b9a\n        byte[] utf8Bytes = originalText.getBytes(\"UTF-8\");\n        byte[] sjisBytes = originalText.getBytes(\"Shift-JIS\");\n\n        \/\/ \u65b9\u6cd52: StandardCharsets\u4f7f\u7528\uff08\u63a8\u5968\uff09\n        byte[] utf8BytesStandard = originalText.getBytes(StandardCharsets.UTF_8);\n\n        \/\/ \u30d0\u30a4\u30c8\u914d\u5217\u304b\u3089\u6587\u5b57\u5217\u3078\u306e\u5909\u63db\n        String utf8Text = new String(utf8Bytes, StandardCharsets.UTF_8);\n        String sjisText = new String(sjisBytes, \"Shift-JIS\");\n\n        \/\/ \u6587\u5b57\u30b3\u30fc\u30c9\u306e\u78ba\u8a8d\n        System.out.println(\"UTF-8\u30d0\u30a4\u30c8\u6570: \" + utf8Bytes.length);\n        System.out.println(\"Shift-JIS\u30d0\u30a4\u30c8\u6570: \" + sjisBytes.length);\n    }\n}<\/pre>\n\n\n<div id=\"sgb-css-id-77\">\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\">\u4f7f\u7528\u6642\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-75\">\n<li>\u5fc5\u305a\u6587\u5b57\u30b3\u30fc\u30c9\u3092\u660e\u793a\u7684\u306b\u6307\u5b9a\u3059\u308b<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-76\">\n<li>try-catch\u306b\u3088\u308b\u4f8b\u5916\u51e6\u7406\u3092\u5fd8\u308c\u305a\u306b\u5b9f\u88c5<\/li>\n<\/div>\n\n\n<li>StandardCharsets\u4f7f\u7528\u3092\u63a8\u5968\uff08\u30bf\u30a4\u30d7\u30bb\u30fc\u30d5\uff09<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div>\n\n<div id=\"sgb-css-id-78\">\n<h3 class=\"wp-block-heading\" id=\"i-12\">2.2 InputStreamReader\u3068OutputStreamWriter\u306e\u6d3b\u7528\u8853<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-79\">\n<p>\u30b9\u30c8\u30ea\u30fc\u30e0\u51e6\u7406\u306b\u3088\u308b\u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u306f\u3001\u5927\u5bb9\u91cf\u30c7\u30fc\u30bf\u306e\u51e6\u7406\u306b\u9069\u3057\u3066\u3044\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 class StreamEncodingExample {\n    public static void convertEncoding(String inputFile, String outputFile,\n                                     String fromEncoding, String toEncoding) {\n        \/\/ \u30d0\u30c3\u30d5\u30a1\u30b5\u30a4\u30ba\u306e\u6700\u9069\u5316\n        final int BUFFER_SIZE = 8192;\n\n        try (BufferedReader reader = new BufferedReader(\n                new InputStreamReader(\n                    new FileInputStream(inputFile), fromEncoding), BUFFER_SIZE);\n             BufferedWriter writer = new BufferedWriter(\n                new OutputStreamWriter(\n                    new FileOutputStream(outputFile), toEncoding), BUFFER_SIZE)) {\n\n            String line;\n            while ((line = reader.readLine()) != null) {\n                writer.write(line);\n                writer.newLine();\n            }\n\n        } catch (IOException e) {\n            \/\/ \u30a8\u30e9\u30fc\u30ed\u30b0\u306e\u51fa\u529b\n            logger.error(\"\u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u4e2d\u306b\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f\", e);\n            throw new RuntimeException(\"\u5909\u63db\u51e6\u7406\u306b\u5931\u6557\u3057\u307e\u3057\u305f\", e);\n        }\n    }\n}<\/pre>\n\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\">\u6700\u9069\u5316\u306e\u30dd\u30a4\u30f3\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-80\">\n<li>\u30d0\u30c3\u30d5\u30a1\u30b5\u30a4\u30ba\u306e\u9069\u5207\u306a\u8a2d\u5b9a<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-81\">\n<li>try-with-resources\u306e\u4f7f\u7528<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-82\">\n<li>\u9069\u5207\u306a\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0<\/li>\n<\/div>\n\n\n<li>\u30ed\u30b0\u51fa\u529b\u306e\u5b9f\u88c5<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div>\n\n<div id=\"sgb-css-id-84\">\n<h3 class=\"wp-block-heading\" id=\"i-13\">2.3 Files.readAllLines()\u306b\u3088\u308b\u52b9\u7387\u7684\u306a\u30d5\u30a1\u30a4\u30eb\u8aad\u307f\u8fbc\u307f\u3068\u6587\u5b57\u30b3\u30fc\u30c9\u6307\u5b9a<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-85\">\n<p>Java 7\u4ee5\u964d\u3067\u306f\u3001Files API\u3092\u4f7f\u7528\u3057\u305f\u7c21\u6f54\u306a\u5b9f\u88c5\u304c\u53ef\u80fd\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 FilesApiExample {\n    public static List&lt;String&gt; readAndConvertFile(Path filePath, Charset charset) {\n        try {\n            \/\/ \u30d5\u30a1\u30a4\u30eb\u5168\u4f53\u3092\u4e00\u5ea6\u306b\u8aad\u307f\u8fbc\u307f\n            List&lt;String&gt; lines = Files.readAllLines(filePath, charset);\n\n            \/\/ \u5fc5\u8981\u306b\u5fdc\u3058\u3066\u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u3092\u5b9f\u884c\n            List&lt;String&gt; convertedLines = lines.stream()\n                .map(line -&gt; new String(\n                    line.getBytes(charset), \n                    StandardCharsets.UTF_8))\n                .collect(Collectors.toList());\n\n            return convertedLines;\n\n        } catch (IOException e) {\n            logger.error(\"\u30d5\u30a1\u30a4\u30eb\u8aad\u307f\u8fbc\u307f\u4e2d\u306b\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f\", e);\n            throw new UncheckedIOException(e);\n        }\n    }\n\n    public static void writeConvertedFile(Path filePath, \n                                        List&lt;String&gt; lines, \n                                        Charset charset) {\n        try {\n            Files.write(filePath, lines, charset,\n                StandardOpenOption.CREATE,\n                StandardOpenOption.TRUNCATE_EXISTING);\n        } catch (IOException e) {\n            logger.error(\"\u30d5\u30a1\u30a4\u30eb\u66f8\u304d\u8fbc\u307f\u4e2d\u306b\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f\", e);\n            throw new UncheckedIOException(e);\n        }\n    }\n}<\/pre>\n\n\n<div id=\"sgb-css-id-89\">\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\">Files API\u306e\u30e1\u30ea\u30c3\u30c8<\/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-86\">\n<li>\u30b3\u30fc\u30c9\u306e\u7c21\u6f54\u3055<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-87\">\n<li>\u4f8b\u5916\u51e6\u7406\u306e\u7d71\u4e00\u6027<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-88\">\n<li>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\u5316<\/li>\n<\/div>\n\n\n<li>\u8c4a\u5bcc\u306a\u30aa\u30d7\u30b7\u30e7\u30f3<\/li>\n<\/ol>\n<\/div><\/div>\n<\/div>\n\n<div id=\"sgb-css-id-93\">\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:#ffb36b;color:#FFF\" class=\"sgb-box-simple__title\">\u5b9f\u88c5\u6642\u306e\u6ce8\u610f\u70b9<\/div><div class=\"sgb-box-simple__body\" style=\"border-color:#ffb36b;background-color:#FFF\">\n<ul class=\"wp-block-list\"><div id=\"sgb-css-id-90\">\n<li>\u5927\u5bb9\u91cf\u30d5\u30a1\u30a4\u30eb\u306e\u5834\u5408\u306f\u30b9\u30c8\u30ea\u30fc\u30e0\u51e6\u7406\u3092\u691c\u8a0e<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-91\">\n<li>\u9069\u5207\u306a\u6587\u5b57\u30b3\u30fc\u30c9\u6307\u5b9a<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-92\">\n<li>\u30a8\u30e9\u30fc\u767a\u751f\u6642\u306e\u9069\u5207\u306a\u30ea\u30bd\u30fc\u30b9\u89e3\u653e<\/li>\n<\/div>\n\n\n<li>\u30d5\u30a1\u30a4\u30eb\u30ed\u30c3\u30af\u306e\u8003\u616e<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div>\n\n<div id=\"sgb-css-id-94\">\n<p>\u3053\u308c\u3089\u306e\u5b9f\u88c5\u65b9\u6cd5\u306f\u3001\u7528\u9014\u3084\u8981\u4ef6\u306b\u5fdc\u3058\u3066\u9069\u5207\u306b\u9078\u629e\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u6b21\u7ae0\u3067\u306f\u3001\u5b9f\u969b\u306b\u767a\u751f\u3059\u308b\u6587\u5b57\u5316\u3051\u30c8\u30e9\u30d6\u30eb\u3068\u305d\u306e\u89e3\u6c7a\u7b56\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-95\">\n<h2 class=\"wp-block-heading\" id=\"i-14\">\uff13\uff0e\u6587\u5b57\u5316\u3051\u30c8\u30e9\u30d6\u30eb\u306e\u539f\u56e0\u3068\u89e3\u6c7a\u7b56<\/h2>\n<\/div>\n\n<div id=\"sgb-css-id-96\">\n<h3 class=\"wp-block-heading\" id=\"i-15\">3.1 \u3088\u304f\u3042\u308b\u6587\u5b57\u5316\u3051\u306e\u539f\u56e0\u3068\u8a3a\u65ad\u65b9\u6cd5<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-97\">\n<h4 class=\"wp-block-heading\" id=\"i-16\">\u4e3b\u306a\u6587\u5b57\u5316\u3051\u30d1\u30bf\u30fc\u30f3\u3068\u539f\u56e0<\/h4>\n<\/div>\n\n<div id=\"id-5967bdac-66a3-4806-bfe3-b0a948ec0dd8\"><div id=\"sgb-css-id-98\">\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u73fe\u8c61<\/th><th>\u3088\u304f\u3042\u308b\u539f\u56e0<\/th><th>\u8a3a\u65ad\u65b9\u6cd5<\/th><\/tr><\/thead><tbody><tr><td><code>?????<\/code><\/td><td>\u672a\u77e5\u306e\u6587\u5b57\u3068\u3057\u3066\u8a8d\u8b58<\/td><td>\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u306e\u78ba\u8a8d<\/td><\/tr><tr><td><code>\u25a0\u25a0\u25a0\u25a0<\/code><\/td><td>\u6587\u5b57\u5316\u3051\u3092\u793a\u3059\u8a18\u53f7\u306b\u7f6e\u63db<\/td><td>\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306e\u78ba\u8a8d<\/td><\/tr><tr><td><code>\u00e6\u2013\u2021\u00e5\u00ad\u2014<\/code><\/td><td>UTF-8\u3092ISO-8859-1\u3068\u3057\u3066\u8aa4\u8a8d\u8b58<\/td><td>\u30d0\u30a4\u30c8\u30b7\u30fc\u30b1\u30f3\u30b9\u306e\u5206\u6790<\/td><\/tr><tr><td><code>\u00ef\u00bf\u00bd<\/code><\/td><td>BOM\u306e\u8aa4\u51e6\u7406<\/td><td>\u30d5\u30a1\u30a4\u30eb\u30d8\u30c3\u30c0\u30fc\u306e\u78ba\u8a8d<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div><\/div>\n\n<div id=\"sgb-css-id-99\">\n<p>\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3067\u6587\u5b57\u5316\u3051\u306e\u8a3a\u65ad\u304c\u53ef\u80fd\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 EncodingDiagnostics {\n    public static void diagnoseEncoding(byte[] data) {\n        \/\/ \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u306e16\u9032\u6570\u8868\u793a\n        StringBuilder hex = new StringBuilder();\n        for (byte b : data) {\n            hex.append(String.format(\"%02X \", b));\n        }\n        System.out.println(\"Hex: \" + hex.toString());\n\n        \/\/ \u4ee3\u8868\u7684\u306a\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3067\u89e3\u8aad\u3092\u8a66\u884c\n        String[] encodings = {\"UTF-8\", \"Shift-JIS\", \"ISO-8859-1\", \"EUC-JP\"};\n        for (String encoding : encodings) {\n            try {\n                String decoded = new String(data, encoding);\n                System.out.printf(\"%s: %s%n\", encoding, decoded);\n            } catch (UnsupportedEncodingException e) {\n                System.out.printf(\"%s: \u672a\u5bfe\u5fdc%n\", encoding);\n            }\n        }\n    }\n}<\/pre>\n\n\n<div id=\"sgb-css-id-100\">\n<h3 class=\"wp-block-heading\" id=\"i-17\">3.2 \u74b0\u5883\u4f9d\u5b58\u6587\u5b57\u306e\u6b63\u3057\u3044\u53d6\u308a\u6271\u3044\u65b9<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-101\">\n<p>\u74b0\u5883\u4f9d\u5b58\u6587\u5b57\u306b\u3088\u308b\u554f\u984c\u3092\u9632\u3050\u305f\u3081\u306e\u5bfe\u7b56\u306f\u4ee5\u4e0b\u306e\u901a\u308a\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 EnvironmentDependentCharacterHandler {\n    \/\/ \u6a5f\u7a2e\u4f9d\u5b58\u6587\u5b57\u306e\u7f6e\u63db\u30de\u30c3\u30d7\n    private static final Map&lt;String, String&gt; REPLACEMENT_MAP = new HashMap&lt;&gt;();\n    static {\n        REPLACEMENT_MAP.put(\"\u2460\", \"(1)\");\n        REPLACEMENT_MAP.put(\"\u3231\", \"(\u682a)\");\n        REPLACEMENT_MAP.put(\"\u2103\", \"\u5ea6\");\n        \/\/ \u4ed6\u306e\u7f6e\u63db\u30eb\u30fc\u30eb\n    }\n\n    public static String replaceEnvironmentDependentChars(String input) {\n        String result = input;\n        for (Map.Entry&lt;String, String&gt; entry : REPLACEMENT_MAP.entrySet()) {\n            result = result.replace(entry.getKey(), entry.getValue());\n        }\n        return result;\n    }\n\n    public static boolean containsEnvironmentDependentChars(String input) {\n        \/\/ Unicode\u7bc4\u56f2\u30c1\u30a7\u30c3\u30af\n        for (int i = 0; i &lt; input.length(); i++) {\n            char c = input.charAt(i);\n            if (Character.UnicodeBlock.of(c) == Character.UnicodeBlock.PRIVATE_USE_AREA) {\n                return true;\n            }\n        }\n        return false;\n    }\n}<\/pre>\n\n\n<div id=\"sgb-css-id-105\">\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\u306a\u5bfe\u7b56\u30dd\u30a4\u30f3\u30c8<\/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-102\">\n<li>\u74b0\u5883\u4f9d\u5b58\u6587\u5b57\u306e\u691c\u51fa<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-103\">\n<li>\u4ee3\u66ff\u6587\u5b57\u3078\u306e\u7f6e\u63db<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-104\">\n<li>Unicode\u6b63\u898f\u5316\u306e\u9069\u7528<\/li>\n<\/div>\n\n\n<li>\u6587\u5b57\u5316\u3051\u691c\u8a3c\u306e\u81ea\u52d5\u5316<\/li>\n<\/ol>\n<\/div><\/div>\n<\/div>\n\n<div id=\"sgb-css-id-106\">\n<h3 class=\"wp-block-heading\" id=\"i-18\">3.3 \u6587\u5b57\u30b3\u30fc\u30c9\u5224\u5b9a\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u6d3b\u7528\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-107\">\n<h4 class=\"wp-block-heading\" id=\"i-19\">juniversalchardet\uff08Mozilla\u88fd\uff09\u306e\u6d3b\u7528\u4f8b\uff1a<\/h4>\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 CharsetDetectionExample {\n    public static Charset detectCharset(byte[] data) {\n        org.mozilla.universalchardet.UniversalDetector detector = \n            new org.mozilla.universalchardet.UniversalDetector(null);\n\n        try {\n            detector.handleData(data, 0, data.length);\n            detector.dataEnd();\n\n            String charsetName = detector.getDetectedCharset();\n            if (charsetName != null) {\n                return Charset.forName(charsetName);\n            }\n        } finally {\n            detector.reset();\n        }\n\n        \/\/ \u30c7\u30d5\u30a9\u30eb\u30c8\u306fUTF-8\n        return StandardCharsets.UTF_8;\n    }\n\n    public static String readFileWithAutoDetection(Path filePath) \n            throws IOException {\n        byte[] data = Files.readAllBytes(filePath);\n        Charset detectedCharset = detectCharset(data);\n        return new String(data, detectedCharset);\n    }\n}<\/pre>\n\n\n<div id=\"sgb-css-id-111\">\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\">\u6587\u5b57\u30b3\u30fc\u30c9\u5224\u5b9a\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/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-108\">\n<li>\u8907\u6570\u306e\u5224\u5b9a\u624b\u6cd5\u306e\u7d44\u307f\u5408\u308f\u305b<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-109\">\n<li>\u30b3\u30f3\u30d5\u30a3\u30c7\u30f3\u30b9\u30ec\u30d9\u30eb\u306e\u78ba\u8a8d<\/li>\n<\/div>\n\n<div id=\"sgb-css-id-110\">\n<li>\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u30e1\u30ab\u30cb\u30ba\u30e0\u306e\u5b9f\u88c5<\/li>\n<\/div>\n\n\n<li>\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u6d3b\u7528<\/li>\n<\/ol>\n<\/div><\/div>\n<\/div>\n\n<div id=\"sgb-css-id-112\">\n<p>\u6587\u5b57\u5316\u3051\u554f\u984c\u306e\u591a\u304f\u306f\u3001\u9069\u5207\u306a\u8a3a\u65ad\u3068\u4f53\u7cfb\u7684\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u306b\u3088\u308a\u89e3\u6c7a\u53ef\u80fd\u3067\u3059\u3002\u6b21\u7ae0\u3067\u306f\u3001\u3088\u308a\u5b9f\u8df5\u7684\u306a\u30b3\u30fc\u30c9\u4f8b\u3068\u5fdc\u7528\u30c6\u30af\u30cb\u30c3\u30af\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-113\">\n<h2 class=\"wp-block-heading\" id=\"i-20\">\uff14\uff0e\u5b9f\u8df5\u7684\u306a\u30b3\u30fc\u30c9\u4f8b\u3068\u5fdc\u7528\u30c6\u30af\u30cb\u30c3\u30af<\/h2>\n<\/div>\n\n<div id=\"sgb-css-id-114\">\n<h3 class=\"wp-block-heading\" id=\"i-21\">4.1 Shift-JIS\u304b\u3089UTF-8\u3078\u306e\u5909\u63db\u5b9f\u88c5\u4f8b<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-115\">\n<p>\u4ee5\u4e0b\u306b\u3001\u5b9f\u52d9\u3067\u3088\u304f\u5fc5\u8981\u3068\u306a\u308bShift-JIS\u304b\u3089UTF-8\u3078\u306e\u5909\u63db\u51e6\u7406\u306e\u5b8c\u5168\u306a\u5b9f\u88c5\u4f8b\u3092\u793a\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 class EncodingConverter {\n    private static final Logger logger = LoggerFactory.getLogger(EncodingConverter.class);\n\n    public static class ConversionResult {\n        private final boolean success;\n        private final String message;\n        private final List&lt;String&gt; convertedLines;\n\n        public ConversionResult(boolean success, String message, List&lt;String&gt; convertedLines) {\n            this.success = success;\n            this.message = message;\n            this.convertedLines = convertedLines;\n        }\n\n        \/\/ getter\u30e1\u30bd\u30c3\u30c9\u7701\u7565\n    }\n\n    public static ConversionResult convertShiftJISToUTF8(Path inputPath, Path outputPath) {\n        List&lt;String&gt; convertedLines = new ArrayList&lt;&gt;();\n        StringBuilder errorMessage = new StringBuilder();\n\n        try (BufferedReader reader = new BufferedReader(\n                new InputStreamReader(\n                    new FileInputStream(inputPath.toFile()), \"Shift-JIS\"));\n             BufferedWriter writer = new BufferedWriter(\n                new OutputStreamWriter(\n                    new FileOutputStream(outputPath.toFile()), StandardCharsets.UTF_8))) {\n\n            String line;\n            int lineNumber = 0;\n\n            while ((line = reader.readLine()) != null) {\n                lineNumber++;\n                try {\n                    \/\/ \u6587\u5b57\u5316\u3051\u30c1\u30a7\u30c3\u30af\n                    if (containsGarbledCharacters(line)) {\n                        errorMessage.append(String.format(\"Warning: Line %d may contain garbled characters%n\", lineNumber));\n                    }\n\n                    \/\/ BOM\u306e\u9664\u53bb\uff08\u5fc5\u8981\u306a\u5834\u5408\uff09\n                    line = removeBOM(line);\n\n                    \/\/ \u5909\u63db\u51e6\u7406\n                    String convertedLine = new String(\n                        line.getBytes(\"Shift-JIS\"), \n                        StandardCharsets.UTF_8);\n\n                    convertedLines.add(convertedLine);\n                    writer.write(convertedLine);\n                    writer.newLine();\n\n                } catch (Exception e) {\n                    errorMessage.append(String.format(\"Error at line %d: %s%n\", lineNumber, e.getMessage()));\n                }\n            }\n\n            return new ConversionResult(\n                errorMessage.length() == 0,\n                errorMessage.toString(),\n                convertedLines\n            );\n\n        } catch (IOException e) {\n            logger.error(\"File conversion failed\", e);\n            return new ConversionResult(\n                false,\n                \"File conversion failed: \" + e.getMessage(),\n                Collections.emptyList()\n            );\n        }\n    }\n\n    private static boolean containsGarbledCharacters(String text) {\n        \/\/ \u6587\u5b57\u5316\u3051\u306e\u5178\u578b\u7684\u306a\u30d1\u30bf\u30fc\u30f3\u3092\u30c1\u30a7\u30c3\u30af\n        return text.contains(\"\ufffd\") || text.matches(\".*[\\\\ufffd\\\\ufffe\\\\uffff].*\");\n    }\n\n    private static String removeBOM(String text) {\n        \/\/ BOM\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u306f\u9664\u53bb\n        return text.startsWith(\"\\uFEFF\") ? text.substring(1) : text;\n    }\n}<\/pre>\n\n\n<div id=\"sgb-css-id-116\">\n<h3 class=\"wp-block-heading\" id=\"i-22\">4.2 \u30d0\u30a4\u30ca\u30ea\u30c7\u30fc\u30bf\u3092\u542b\u3080\u30c6\u30ad\u30b9\u30c8\u306e\u5b89\u5168\u306a\u5909\u63db\u65b9\u6cd5<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-117\">\n<p>\u30d0\u30a4\u30ca\u30ea\u30c7\u30fc\u30bf\u304c\u6df7\u5728\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u30c6\u30ad\u30b9\u30c8\u3092\u5b89\u5168\u306b\u51e6\u7406\u3059\u308b\u65b9\u6cd5\u3092\u793a\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 class BinaryAwareConverter {\n    \/\/ \u30d0\u30a4\u30ca\u30ea\u30c7\u30fc\u30bf\u306e\u691c\u51fa\u95be\u5024\n    private static final double BINARY_THRESHOLD = 0.30;\n\n    public static class ConversionResult {\n        private final byte[] convertedData;\n        private final boolean containsBinary;\n        private final String encoding;\n\n        \/\/ \u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3068getter\u306f\u7701\u7565\n    }\n\n    public static ConversionResult convertWithBinaryCheck(byte[] input, String sourceEncoding, String targetEncoding) {\n        try {\n            \/\/ \u30d0\u30a4\u30ca\u30ea\u30c7\u30fc\u30bf\u30c1\u30a7\u30c3\u30af\n            if (isBinaryData(input)) {\n                \/\/ \u30d0\u30a4\u30ca\u30ea\u30c7\u30fc\u30bf\u306e\u5834\u5408\u306f\u5909\u63db\u305b\u305a\u306b\u305d\u306e\u307e\u307e\u8fd4\u3059\n                return new ConversionResult(input, true, sourceEncoding);\n            }\n\n            \/\/ \u30c6\u30ad\u30b9\u30c8\u30c7\u30fc\u30bf\u306e\u5909\u63db\n            String text = new String(input, sourceEncoding);\n            byte[] converted = text.getBytes(targetEncoding);\n\n            return new ConversionResult(converted, false, targetEncoding);\n\n        } catch (UnsupportedEncodingException e) {\n            throw new RuntimeException(\"Encoding not supported\", e);\n        }\n    }\n\n    private static boolean isBinaryData(byte[] data) {\n        if (data.length == 0) return false;\n\n        int controlChars = 0;\n        for (byte b : data) {\n            if (b &lt; 32 &amp;&amp; b != 9 &amp;&amp; b != 10 &amp;&amp; b != 13) {\n                controlChars++;\n            }\n        }\n\n        return (double) controlChars \/ data.length &gt; BINARY_THRESHOLD;\n    }\n}<\/pre>\n\n\n<div id=\"sgb-css-id-118\">\n<h3 class=\"wp-block-heading\" id=\"i-23\">4.3 \u5927\u5bb9\u91cf\u30d5\u30a1\u30a4\u30eb\u306e\u52b9\u7387\u7684\u306a\u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-119\">\n<p>\u5927\u5bb9\u91cf\u30d5\u30a1\u30a4\u30eb\u3092\u52b9\u7387\u7684\u306b\u51e6\u7406\u3059\u308b\u305f\u3081\u306e\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u5b9f\u88c5\u4f8b\u3092\u793a\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 class LargeFileConverter {\n    private static final int BUFFER_SIZE = 8192;\n    private static final int MAX_MEMORY_USAGE = 1024 * 1024 * 10; \/\/ 10MB\n\n    public static void convertLargeFile(Path inputPath, Path outputPath,\n                                      String sourceEncoding, String targetEncoding) \n            throws IOException {\n\n        \/\/ \u30c6\u30f3\u30dd\u30e9\u30ea\u30d5\u30a1\u30a4\u30eb\u306e\u4f5c\u6210\n        Path tempFile = Files.createTempFile(\"encoding_conversion\", \".tmp\");\n\n        try (FileChannel inputChannel = FileChannel.open(inputPath, StandardOpenOption.READ);\n             FileChannel outputChannel = FileChannel.open(tempFile, \n                 StandardOpenOption.WRITE, \n                 StandardOpenOption.CREATE)) {\n\n            \/\/ \u30e1\u30e2\u30ea\u30de\u30c3\u30d7\u30c9\u30d5\u30a1\u30a4\u30eb\u3092\u4f7f\u7528\u3057\u305f\u52b9\u7387\u7684\u306a\u51e6\u7406\n            long fileSize = inputChannel.size();\n            long position = 0;\n\n            while (position &lt; fileSize) {\n                long remainingSize = fileSize - position;\n                long mappingSize = Math.min(remainingSize, MAX_MEMORY_USAGE);\n\n                MappedByteBuffer buffer = inputChannel\n                    .map(FileChannel.MapMode.READ_ONLY, position, mappingSize);\n\n                \/\/ \u30d0\u30c3\u30d5\u30a1\u304b\u3089\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u8fbc\u307f\n                byte[] data = new byte[(int) mappingSize];\n                buffer.get(data);\n\n                \/\/ \u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\n                String text = new String(data, sourceEncoding);\n                byte[] convertedData = text.getBytes(targetEncoding);\n\n                \/\/ \u5909\u63db\u3057\u305f\u30c7\u30fc\u30bf\u3092\u66f8\u304d\u8fbc\u307f\n                ByteBuffer outputBuffer = ByteBuffer.wrap(convertedData);\n                outputChannel.write(outputBuffer);\n\n                position += mappingSize;\n            }\n        }\n\n        \/\/ \u5b8c\u4e86\u3057\u305f\u3089\u4e00\u6642\u30d5\u30a1\u30a4\u30eb\u3092\u672c\u756a\u30d5\u30a1\u30a4\u30eb\u306b\u79fb\u52d5\n        Files.move(tempFile, outputPath, StandardCopyOption.REPLACE_EXISTING);\n    }\n\n    \/\/ \u9032\u6357\u76e3\u8996\u7528\u306e\u30e9\u30c3\u30d1\u30fc\u30e1\u30bd\u30c3\u30c9\n    public static void convertLargeFileWithProgress(Path inputPath, Path outputPath,\n                                                  String sourceEncoding, String targetEncoding,\n                                                  ProgressCallback callback) {\n        try {\n            long totalSize = Files.size(inputPath);\n            AtomicLong processedSize = new AtomicLong(0);\n\n            \/\/ \u9032\u6357\u5831\u544a\u7528\u30b9\u30ec\u30c3\u30c9\u306e\u958b\u59cb\n            ScheduledExecutorService executor = Executors.newSingleThreadScheduledExecutor();\n            executor.scheduleAtFixedRate(() -&gt; {\n                double progress = (double) processedSize.get() \/ totalSize * 100;\n                callback.onProgress(progress);\n            }, 0, 1, TimeUnit.SECONDS);\n\n            \/\/ \u5909\u63db\u51e6\u7406\u306e\u5b9f\u884c\n            convertLargeFile(inputPath, outputPath, sourceEncoding, targetEncoding);\n\n            \/\/ \u9032\u6357\u5831\u544a\u7528\u30b9\u30ec\u30c3\u30c9\u306e\u505c\u6b62\n            executor.shutdown();\n            callback.onComplete();\n\n        } catch (IOException e) {\n            callback.onError(e);\n        }\n    }\n\n    @FunctionalInterface\n    public interface ProgressCallback {\n        void onProgress(double percentage);\n        default void onComplete() {}\n        default void onError(Exception e) {}\n    }\n}<\/pre>\n\n\n<div id=\"sgb-css-id-120\">\n<p>\u3053\u308c\u3089\u306e\u5b9f\u88c5\u4f8b\u306f\u3001\u5b9f\u52d9\u3067\u306e\u69d8\u3005\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306b\u5bfe\u5fdc\u3067\u304d\u308b\u3088\u3046\u8a2d\u8a08\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u6b21\u7ae0\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u5b9f\u88c5\u306b\u304a\u3051\u308b\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-121\">\n<h2 class=\"wp-block-heading\" id=\"i-24\">\uff15\uff0e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h2>\n<\/div>\n\n<div id=\"sgb-css-id-122\">\n<h3 class=\"wp-block-heading\" id=\"i-25\">5.1 \u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u51e6\u7406\u306e\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-123\">\n<h4 class=\"wp-block-heading\" id=\"i-26\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u57fa\u672c\u6226\u7565<\/h4>\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 EncodingPerformanceOptimizer {\n    \/\/ \u6700\u9069\u306a\u30d0\u30c3\u30d5\u30a1\u30b5\u30a4\u30ba\u306e\u6c7a\u5b9a\n    private static final int OPTIMAL_BUFFER_SIZE = 8192; \/\/ 8KB\n\n    public static class PerformanceMetrics {\n        private long executionTime;\n        private long memoryUsage;\n        private int throughput;\n\n        \/\/ getter\u3068setter\u306f\u7701\u7565\n    }\n\n    public static PerformanceMetrics convertWithMetrics(Path input, Path output,\n                                                      String sourceEncoding, \n                                                      String targetEncoding) {\n        PerformanceMetrics metrics = new PerformanceMetrics();\n        Runtime runtime = Runtime.getRuntime();\n\n        \/\/ \u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u521d\u671f\u5024\u3092\u8a18\u9332\n        long initialMemory = runtime.totalMemory() - runtime.freeMemory();\n        long startTime = System.nanoTime();\n\n        try (BufferedReader reader = new BufferedReader(\n                new InputStreamReader(\n                    new FileInputStream(input.toFile()), \n                    sourceEncoding), \n                OPTIMAL_BUFFER_SIZE);\n             BufferedWriter writer = new BufferedWriter(\n                new OutputStreamWriter(\n                    new FileOutputStream(output.toFile()), \n                    targetEncoding), \n                OPTIMAL_BUFFER_SIZE)) {\n\n            \/\/ CharBuffer\u3092\u4f7f\u7528\u3057\u305f\u52b9\u7387\u7684\u306a\u51e6\u7406\n            CharBuffer buffer = CharBuffer.allocate(OPTIMAL_BUFFER_SIZE);\n            char[] chars = new char[OPTIMAL_BUFFER_SIZE];\n            int read;\n\n            while ((read = reader.read(chars)) != -1) {\n                buffer.put(chars, 0, read);\n                buffer.flip();\n                writer.write(buffer.toString());\n                buffer.clear();\n            }\n\n        } catch (IOException e) {\n            logger.error(\"Conversion failed\", e);\n            throw new RuntimeException(e);\n        }\n\n        \/\/ \u30e1\u30c8\u30ea\u30af\u30b9\u306e\u8a08\u7b97\n        long endTime = System.nanoTime();\n        long finalMemory = runtime.totalMemory() - runtime.freeMemory();\n\n        metrics.setExecutionTime(endTime - startTime);\n        metrics.setMemoryUsage(finalMemory - initialMemory);\n\n        return metrics;\n    }\n}<\/pre>\n\n\n<div id=\"sgb-css-id-124\">\n<h4 class=\"wp-block-heading\" id=\"i-27\">\u6700\u9069\u5316\u306e\u30dd\u30a4\u30f3\u30c8\u4e00\u89a7<\/h4>\n<\/div>\n\n<div id=\"id-ec4bd3eb-deac-4e48-83b9-048373adb7a5\"><div id=\"sgb-css-id-125\">\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u6700\u9069\u5316\u9805\u76ee<\/th><th>\u52b9\u679c<\/th><th>\u5b9f\u88c5\u65b9\u6cd5<\/th><\/tr><\/thead><tbody><tr><td>\u30d0\u30c3\u30d5\u30a1\u30b5\u30a4\u30ba\u6700\u9069\u5316<\/td><td>I\/O\u52b9\u7387\u5411\u4e0a<\/td><td>8KB-64KB\u306e\u30d0\u30c3\u30d5\u30a1\u4f7f\u7528<\/td><\/tr><tr><td>\u30e1\u30e2\u30ea\u30de\u30c3\u30d4\u30f3\u30b0<\/td><td>\u5927\u5bb9\u91cf\u30d5\u30a1\u30a4\u30eb\u51e6\u7406<\/td><td>FileChannel.map()\u4f7f\u7528<\/td><\/tr><tr><td>\u4e26\u5217\u51e6\u7406<\/td><td>\u51e6\u7406\u901f\u5ea6\u5411\u4e0a<\/td><td>ExecutorService\u306e\u6d3b\u7528<\/td><\/tr><tr><td>\u30ad\u30e3\u30c3\u30b7\u30f3\u30b0<\/td><td>\u91cd\u8907\u51e6\u7406\u306e\u524a\u6e1b<\/td><td>WeakHashMap\u306e\u4f7f\u7528<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div><\/div>\n\n\n<h3 class=\"wp-block-heading\" id=\"i-28\">5.2 \u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u8003\u616e\u3057\u305f\u5b9f\u88c5\u65b9\u6cd5<\/h3>\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 class MemoryEfficientConverter {\n    private static final WeakHashMap&lt;String, CharsetEncoder&gt; encoderCache = new WeakHashMap&lt;&gt;();\n    private static final WeakHashMap&lt;String, CharsetDecoder&gt; decoderCache = new WeakHashMap&lt;&gt;();\n\n    public static void convertLargeFileMemoryEfficient(\n            Path input, Path output, String sourceEncoding, String targetEncoding) {\n\n        \/\/ \u30a8\u30f3\u30b3\u30fc\u30c0\u30fc\/\u30c7\u30b3\u30fc\u30c0\u30fc\u306e\u53d6\u5f97\uff08\u30ad\u30e3\u30c3\u30b7\u30e5\u5229\u7528\uff09\n        CharsetEncoder encoder = getEncoder(targetEncoding);\n        CharsetDecoder decoder = getDecoder(sourceEncoding);\n\n        try (FileChannel inputChannel = FileChannel.open(input, StandardOpenOption.READ);\n             FileChannel outputChannel = FileChannel.open(output, \n                 StandardOpenOption.WRITE, \n                 StandardOpenOption.CREATE)) {\n\n            \/\/ \u30c1\u30e3\u30f3\u30af\u5358\u4f4d\u3067\u306e\u51e6\u7406\n            ByteBuffer inputBuffer = ByteBuffer.allocate(8192);\n            ByteBuffer outputBuffer = ByteBuffer.allocate(8192);\n            CharBuffer charBuffer = CharBuffer.allocate(8192);\n\n            while (inputChannel.read(inputBuffer) != -1) {\n                inputBuffer.flip();\n                decoder.decode(inputBuffer, charBuffer, false);\n                charBuffer.flip();\n                encoder.encode(charBuffer, outputBuffer, false);\n                outputBuffer.flip();\n\n                outputChannel.write(outputBuffer);\n\n                inputBuffer.compact();\n                charBuffer.compact();\n                outputBuffer.compact();\n            }\n\n            \/\/ \u6b8b\u308a\u306e\u30c7\u30fc\u30bf\u306e\u51e6\u7406\n            decoder.decode(inputBuffer, charBuffer, true);\n            encoder.encode(charBuffer, outputBuffer, true);\n            outputChannel.write(outputBuffer);\n\n        } catch (IOException e) {\n            throw new RuntimeException(\"Conversion failed\", e);\n        }\n    }\n\n    private static synchronized CharsetEncoder getEncoder(String encoding) {\n        return encoderCache.computeIfAbsent(encoding,\n            e -&gt; Charset.forName(e).newEncoder()\n                .onMalformedInput(CodingErrorAction.REPLACE)\n                .onUnmappableCharacter(CodingErrorAction.REPLACE));\n    }\n\n    private static synchronized CharsetDecoder getDecoder(String encoding) {\n        return decoderCache.computeIfAbsent(encoding,\n            e -&gt; Charset.forName(e).newDecoder()\n                .onMalformedInput(CodingErrorAction.REPLACE)\n                .onUnmappableCharacter(CodingErrorAction.REPLACE));\n    }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-29\">5.3 \u30e6\u30cb\u30c3\u30c8\u30c6\u30b9\u30c8\u306b\u3088\u308b\u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u306e\u54c1\u8cea\u62c5\u4fdd<\/h3>\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=\"\">@ExtendWith(MockitoExtension.class)\npublic class EncodingConverterTest {\n    private static final String TEST_STRING = \"\u30c6\u30b9\u30c8\u6587\u5b57\u5217\";\n    private static final Path TEST_DIR = Paths.get(\"target\/test-files\");\n\n    @BeforeEach\n    void setUp() throws IOException {\n        Files.createDirectories(TEST_DIR);\n    }\n\n    @Test\n    void testBasicConversion() throws Exception {\n        \/\/ \u30c6\u30b9\u30c8\u30d5\u30a1\u30a4\u30eb\u306e\u6e96\u5099\n        Path inputPath = TEST_DIR.resolve(\"input.txt\");\n        Path outputPath = TEST_DIR.resolve(\"output.txt\");\n\n        \/\/ Shift-JIS\u3067\u30d5\u30a1\u30a4\u30eb\u4f5c\u6210\n        try (Writer writer = new OutputStreamWriter(\n                new FileOutputStream(inputPath.toFile()), \"Shift-JIS\")) {\n            writer.write(TEST_STRING);\n        }\n\n        \/\/ \u5909\u63db\u5b9f\u884c\n        EncodingConverter.convertShiftJISToUTF8(inputPath, outputPath);\n\n        \/\/ \u7d50\u679c\u691c\u8a3c\n        String result = Files.readString(outputPath, StandardCharsets.UTF_8);\n        assertEquals(TEST_STRING, result);\n    }\n\n    @Test\n    void testLargeFileConversion() throws Exception {\n        \/\/ \u5927\u5bb9\u91cf\u30c6\u30b9\u30c8\u30c7\u30fc\u30bf\u751f\u6210\n        StringBuilder largeContent = new StringBuilder();\n        for (int i = 0; i &lt; 100000; i++) {\n            largeContent.append(TEST_STRING).append(\"\\n\");\n        }\n\n        Path inputPath = TEST_DIR.resolve(\"large_input.txt\");\n        Path outputPath = TEST_DIR.resolve(\"large_output.txt\");\n\n        \/\/ \u30d5\u30a1\u30a4\u30eb\u4f5c\u6210\u3068\u5909\u63db\u30c6\u30b9\u30c8\n        Files.writeString(inputPath, largeContent.toString(), \n            Charset.forName(\"Shift-JIS\"));\n\n        \/\/ \u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u76e3\u8996\u3057\u306a\u304c\u3089\u5909\u63db\n        Runtime runtime = Runtime.getRuntime();\n        long beforeMemory = runtime.totalMemory() - runtime.freeMemory();\n\n        LargeFileConverter.convertLargeFile(inputPath, outputPath, \n            \"Shift-JIS\", \"UTF-8\");\n\n        long afterMemory = runtime.totalMemory() - runtime.freeMemory();\n\n        \/\/ \u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u78ba\u8a8d\n        assertTrue((afterMemory - beforeMemory) &lt; 50 * 1024 * 1024); \/\/ 50MB\u4ee5\u4e0b\n\n        \/\/ \u5185\u5bb9\u691c\u8a3c\n        try (BufferedReader reader = Files.newBufferedReader(outputPath, \n                StandardCharsets.UTF_8)) {\n            String firstLine = reader.readLine();\n            assertEquals(TEST_STRING, firstLine);\n        }\n    }\n}<\/pre>\n\n\n<div id=\"sgb-css-id-126\">\n<h4 class=\"wp-block-heading\" id=\"i-30\">\u30c6\u30b9\u30c8\u5b9f\u88c5\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h4>\n<\/div>\n\n<div id=\"sgb-css-id-127\">\n<p>\u3000<strong>1. \u30a8\u30c3\u30b8\u30b1\u30fc\u30b9\u306e\u7db2\u7f85<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-128\">\n<p>\u3000\u3000\u25cf \u7a7a\u30d5\u30a1\u30a4\u30eb<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-129\">\n<p>\u3000\u3000\u25cf \u7279\u6b8a\u6587\u5b57\u3092\u542b\u3080\u30d5\u30a1\u30a4\u30eb<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-130\">\n<p>\u3000\u3000\u25cf \u5927\u5bb9\u91cf\u30d5\u30a1\u30a4\u30eb<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-131\">\n<p>\u3000\u3000\u25cf \u58ca\u308c\u305f\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-132\">\n<p>\u3000<strong>2. \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30c6\u30b9\u30c8<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-133\">\n<p>\u3000\u3000\u25cf \u5b9f\u884c\u6642\u9593\u306e\u8a08\u6e2c<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-134\">\n<p>\u3000\u3000\u25cf \u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u76e3\u8996<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-135\">\n<p>\u3000\u3000\u25cf \u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3\u306e\u78ba\u8a8d<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-136\">\n<p>\u3000<strong>3. \u7570\u5e38\u7cfb\u306e\u30c6\u30b9\u30c8<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-137\">\n<p>\u3000\u3000\u25cf \u4e0d\u6b63\u306a\u5165\u529b\u306e\u51e6\u7406<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-138\">\n<p>\u3000\u3000\u25cf \u30ea\u30bd\u30fc\u30b9\u5236\u7d04\u4e0b\u3067\u306e\u52d5\u4f5c<\/p>\n<\/div>\n\n\n<p>\u3000\u3000\u25cf \u4f8b\u5916\u51e6\u7406\u306e\u78ba\u8a8d<\/p>\n\n\n<div id=\"sgb-css-id-139\">\n<p>\u3053\u308c\u3089\u306e\u5b9f\u88c5\u3068\u30c6\u30b9\u30c8\u306b\u3088\u308a\u3001\u9ad8\u54c1\u8cea\u306a\u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u51e6\u7406\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002\u6b21\u7ae0\u3067\u306f\u3001\u5b9f\u969b\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u624b\u6cd5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-140\">\n<h2 class=\"wp-block-heading\" id=\"i-31\">\uff16\uff0e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u30ac\u30a4\u30c9<\/h2>\n<\/div>\n\n<div id=\"sgb-css-id-141\">\n<h3 class=\"wp-block-heading\" id=\"i-32\">6.1 \u5909\u63db\u6642\u306e\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u5b9f\u88c5\u4f8b<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-142\">\n<h4 class=\"wp-block-heading\" id=\"i-33\">\u5305\u62ec\u7684\u306a\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u306e\u5b9f\u88c5<\/h4>\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 EncodingTroubleshooter {\n    private static final Logger logger = LoggerFactory.getLogger(EncodingTroubleshooter.class);\n\n    public static class ConversionResult {\n        private final boolean success;\n        private final List&lt;String&gt; warnings;\n        private final List&lt;String&gt; errors;\n        private final Map&lt;String, Object&gt; diagnosticInfo;\n\n        \/\/ \u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3001getter\u306f\u7701\u7565\n    }\n\n    public static ConversionResult safeConvert(Path input, Path output,\n                                             String sourceEncoding, \n                                             String targetEncoding) {\n        List&lt;String&gt; warnings = new ArrayList&lt;&gt;();\n        List&lt;String&gt; errors = new ArrayList&lt;&gt;();\n        Map&lt;String, Object&gt; diagnosticInfo = new HashMap&lt;&gt;();\n\n        try {\n            \/\/ \u30d5\u30a1\u30a4\u30eb\u306e\u5b58\u5728\u78ba\u8a8d\n            if (!Files.exists(input)) {\n                throw new FileNotFoundException(\"Input file not found: \" + input);\n            }\n\n            \/\/ \u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306e\u6709\u52b9\u6027\u78ba\u8a8d\n            validateEncoding(sourceEncoding, targetEncoding);\n\n            \/\/ \u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u30c1\u30a7\u30c3\u30af\n            long fileSize = Files.size(input);\n            diagnosticInfo.put(\"fileSize\", fileSize);\n\n            \/\/ BOM\u30c1\u30a7\u30c3\u30af\n            boolean hasBOM = checkBOM(input);\n            diagnosticInfo.put(\"hasBOM\", hasBOM);\n\n            \/\/ \u6587\u5b57\u30b3\u30fc\u30c9\u5224\u5b9a\n            String detectedEncoding = detectEncoding(input);\n            diagnosticInfo.put(\"detectedEncoding\", detectedEncoding);\n\n            if (!detectedEncoding.equals(sourceEncoding)) {\n                warnings.add(\"Detected encoding differs from specified: \" + \n                    detectedEncoding);\n            }\n\n            \/\/ \u5909\u63db\u5b9f\u884c\n            performConversion(input, output, sourceEncoding, targetEncoding);\n\n            \/\/ \u5909\u63db\u7d50\u679c\u306e\u691c\u8a3c\n            validateConversion(output, targetEncoding);\n\n            return new ConversionResult(true, warnings, errors, diagnosticInfo);\n\n        } catch (Exception e) {\n            logger.error(\"Conversion failed\", e);\n            errors.add(e.getMessage());\n            return new ConversionResult(false, warnings, errors, diagnosticInfo);\n        }\n    }\n\n    private static void validateEncoding(String source, String target) {\n        try {\n            if (!Charset.isSupported(source)) {\n                throw new IllegalArgumentException(\n                    \"Source encoding not supported: \" + source);\n            }\n            if (!Charset.isSupported(target)) {\n                throw new IllegalArgumentException(\n                    \"Target encoding not supported: \" + target);\n            }\n        } catch (IllegalCharsetNameException e) {\n            throw new IllegalArgumentException(\"Invalid charset name\", e);\n        }\n    }\n\n    private static String detectEncoding(Path file) throws IOException {\n        byte[] bytes = Files.readAllBytes(file);\n        UniversalDetector detector = new UniversalDetector(null);\n        detector.handleData(bytes, 0, bytes.length);\n        detector.dataEnd();\n        String encoding = detector.getDetectedCharset();\n        detector.reset();\n        return encoding != null ? encoding : \"UTF-8\";\n    }\n}<\/pre>\n\n\n<div id=\"sgb-css-id-143\">\n<h3 class=\"wp-block-heading\" id=\"i-34\">6.2 \u6587\u5b57\u5316\u3051\u767a\u751f\u6642\u306e\u30c7\u30d0\u30c3\u30b0\u624b\u9806<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-144\">\n<h4 class=\"wp-block-heading\" id=\"i-35\">\u30c7\u30d0\u30c3\u30b0\u30c4\u30fc\u30eb\u306e\u5b9f\u88c5\u4f8b<\/h4>\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 EncodingDebugger {\n    public static class DebugInfo {\n        private final byte[] rawBytes;\n        private final Map&lt;String, String&gt; encodingAttempts;\n        private final List&lt;String&gt; abnormalPatterns;\n\n        \/\/ \u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3001getter\u306f\u7701\u7565\n    }\n\n    public static DebugInfo analyzeText(String text, String expectedEncoding) {\n        byte[] rawBytes = text.getBytes(Charset.forName(expectedEncoding));\n        Map&lt;String, String&gt; encodingAttempts = new HashMap&lt;&gt;();\n        List&lt;String&gt; abnormalPatterns = new ArrayList&lt;&gt;();\n\n        \/\/ \u5404\u7a2e\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3067\u306e\u5909\u63db\u3092\u8a66\u884c\n        for (String encoding : Arrays.asList(\"UTF-8\", \"Shift-JIS\", \"ISO-8859-1\")) {\n            try {\n                String converted = new String(rawBytes, encoding);\n                encodingAttempts.put(encoding, converted);\n\n                \/\/ \u7570\u5e38\u30d1\u30bf\u30fc\u30f3\u306e\u691c\u51fa\n                if (containsAbnormalPattern(converted)) {\n                    abnormalPatterns.add(String.format(\n                        \"Abnormal pattern found in %s encoding\", encoding));\n                }\n            } catch (Exception e) {\n                encodingAttempts.put(encoding, \"Conversion failed: \" + e.getMessage());\n            }\n        }\n\n        \/\/ \u30d0\u30a4\u30c8\u30d1\u30bf\u30fc\u30f3\u306e\u5206\u6790\n        analyzeBytePatterns(rawBytes, abnormalPatterns);\n\n        return new DebugInfo(rawBytes, encodingAttempts, abnormalPatterns);\n    }\n\n    private static boolean containsAbnormalPattern(String text) {\n        \/\/ \u6587\u5b57\u5316\u3051\u306e\u5178\u578b\u7684\u306a\u30d1\u30bf\u30fc\u30f3\u3092\u30c1\u30a7\u30c3\u30af\n        return text.contains(\"?\") || \n               text.contains(\"\ufffd\") || \n               text.matches(\".*[\\\\ufffd\\\\ufffe\\\\uffff].*\");\n    }\n\n    private static void analyzeBytePatterns(byte[] bytes, \n                                          List&lt;String&gt; abnormalPatterns) {\n        \/\/ UTF-8\u306e\u30d0\u30a4\u30c8\u30d1\u30bf\u30fc\u30f3\u30c1\u30a7\u30c3\u30af\n        for (int i = 0; i &lt; bytes.length; i++) {\n            if ((bytes[i] &amp; 0x80) == 0x80) {  \/\/ \u30de\u30eb\u30c1\u30d0\u30a4\u30c8\u6587\u5b57\u306e\u958b\u59cb\n                if ((bytes[i] &amp; 0xE0) == 0xE0) {  \/\/ 3\u30d0\u30a4\u30c8\u6587\u5b57\n                    if (i + 2 &gt;= bytes.length || \n                        (bytes[i + 1] &amp; 0xC0) != 0x80 || \n                        (bytes[i + 2] &amp; 0xC0) != 0x80) {\n                        abnormalPatterns.add(\n                            \"Invalid UTF-8 3-byte sequence at position \" + i);\n                    }\n                }\n            }\n        }\n    }\n}<\/pre>\n\n\n<div id=\"sgb-css-id-145\">\n<h3 class=\"wp-block-heading\" id=\"i-36\">6.3 \u74b0\u5883\u9593\u3067\u306e\u6587\u5b57\u30b3\u30fc\u30c9\u306e\u9055\u3044\u306b\u3088\u308b\u30c8\u30e9\u30d6\u30eb\u5bfe\u7b56<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-146\">\n<h4 class=\"wp-block-heading\" id=\"i-37\">\u74b0\u5883\u5dee\u7570\u306b\u5bfe\u5fdc\u3059\u308b\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3<\/h4>\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 CrossPlatformEncodingUtil {\n    private static final String DEFAULT_ENCODING = StandardCharsets.UTF_8.name();\n    private static final Map&lt;String, String&gt; OS_ENCODING_MAP = new HashMap&lt;&gt;();\n\n    static {\n        OS_ENCODING_MAP.put(\"WINDOWS\", \"MS932\");\n        OS_ENCODING_MAP.put(\"LINUX\", \"UTF-8\");\n        OS_ENCODING_MAP.put(\"MAC\", \"UTF-8\");\n    }\n\n    public static String determineSystemEncoding() {\n        String os = System.getProperty(\"os.name\").toUpperCase();\n        String encoding = System.getProperty(\"file.encoding\");\n\n        \/\/ OS\u3054\u3068\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3092\u30c1\u30a7\u30c3\u30af\n        for (Map.Entry&lt;String, String&gt; entry : OS_ENCODING_MAP.entrySet()) {\n            if (os.contains(entry.getKey())) {\n                if (!encoding.equals(entry.getValue())) {\n                    logger.warn(\"System encoding {} differs from recommended {} for {}\",\n                        encoding, entry.getValue(), entry.getKey());\n                }\n                return entry.getValue();\n            }\n        }\n\n        return DEFAULT_ENCODING;\n    }\n\n    public static void configureGlobalEncoding() {\n        \/\/ \u30d7\u30ed\u30d1\u30c6\u30a3\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u8fbc\u307f\n        try (InputStream input = CrossPlatformEncodingUtil.class\n                .getResourceAsStream(\"\/encoding.properties\")) {\n            if (input == null) {\n                logger.warn(\"encoding.properties not found, using defaults\");\n                return;\n            }\n\n            Properties props = new Properties();\n            props.load(input);\n\n            \/\/ \u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u8a2d\u5b9a\u306e\u9069\u7528\n            String configuredEncoding = props.getProperty(\"file.encoding\");\n            if (configuredEncoding != null) {\n                System.setProperty(\"file.encoding\", configuredEncoding);\n                updateFieldValue();\n            }\n        } catch (IOException e) {\n            logger.error(\"Failed to load encoding configuration\", e);\n        }\n    }\n\n    private static void updateFieldValue() {\n        try {\n            Field charset = Charset.class.getDeclaredField(\"defaultCharset\");\n            charset.setAccessible(true);\n            charset.set(null, null);\n        } catch (Exception e) {\n            logger.error(\"Failed to update default charset\", e);\n        }\n    }\n}<\/pre>\n\n\n<div id=\"sgb-css-id-147\">\n<h4 class=\"wp-block-heading\" id=\"i-38\">\u30c8\u30e9\u30d6\u30eb\u5bfe\u7b56\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h4>\n<\/div>\n\n<div id=\"sgb-css-id-148\">\n<p><strong>\u30001. \u30b7\u30b9\u30c6\u30e0\u8a2d\u5b9a\u306e\u6a19\u6e96\u5316<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-149\">\n<p>\u3000\u3000\u25cf \u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u5168\u4f53\u3067\u7d71\u4e00\u3057\u305f\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u8a2d\u5b9a<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-150\">\n<p>\u3000\u3000\u25cf \u660e\u793a\u7684\u306a\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u6307\u5b9a<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-151\">\n<p>\u3000\u3000\u25cf \u74b0\u5883\u5909\u6570\u306b\u3088\u308b\u5236\u5fa1<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-152\">\n<p><strong>\u30002. \u4e88\u9632\u7684\u306a\u5bfe\u7b56<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-153\">\n<p>\u3000\u3000\u25cf \u5b9a\u671f\u7684\u306a\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u30c1\u30a7\u30c3\u30af<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-154\">\n<p>\u3000\u3000\u25cf \u81ea\u52d5\u30c6\u30b9\u30c8\u306e\u5b9f\u88c5<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-155\">\n<p>\u3000\u3000\u25cf \u30ed\u30b0\u76e3\u8996\u306e\u5f37\u5316<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-156\">\n<p><strong>\u30003. \u30c8\u30e9\u30d6\u30eb\u767a\u751f\u6642\u306e\u5bfe\u5fdc<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-157\">\n<p>\u3000\u3000\u25cf \u8a73\u7d30\u306a\u30ed\u30b0\u53ce\u96c6<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-158\">\n<p>\u3000\u3000\u25cf \u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u60c5\u5831\u306e\u53ef\u8996\u5316<\/p>\n<\/div>\n\n\n<p>\u3000\u3000\u25cf \u6bb5\u968e\u7684\u306a\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0<\/p>\n\n\n<div id=\"sgb-css-id-159\">\n<p>\u3053\u308c\u3089\u306e\u5b9f\u88c5\u306b\u3088\u308a\u3001\u6587\u5b57\u30b3\u30fc\u30c9\u95a2\u9023\u306e\u554f\u984c\u3092\u52b9\u679c\u7684\u306b\u7279\u5b9a\u3057\u3001\u89e3\u6c7a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u6b21\u7ae0\u3067\u306f\u3001\u5168\u4f53\u306e\u307e\u3068\u3081\u3068\u88dc\u8db3\u60c5\u5831\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-160\">\n<h2 class=\"wp-block-heading\" id=\"i-39\">\uff17\uff0e\u307e\u3068\u3081\u3068\u88dc\u8db3\u60c5\u5831<\/h2>\n<\/div>\n\n<div id=\"sgb-css-id-161\">\n<h3 class=\"wp-block-heading\" id=\"i-40\">7.1 \u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u5b9f\u88c5\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u307e\u3068\u3081<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-162\">\n<h4 class=\"wp-block-heading\" id=\"i-41\">\u5b9f\u88c5\u6642\u306e\u91cd\u8981\u30dd\u30a4\u30f3\u30c8\u4e00\u89a7<\/h4>\n<\/div>\n\n<div id=\"id-54947b10-192c-4e26-a972-dacf81d80d0f\"><div id=\"sgb-css-id-163\">\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u30ab\u30c6\u30b4\u30ea<\/th><th>\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/th><th>\u7406\u7531<\/th><\/tr><\/thead><tbody><tr><td>\u57fa\u672c\u8a2d\u8a08<\/td><td>\u660e\u793a\u7684\u306a\u6587\u5b57\u30b3\u30fc\u30c9\u6307\u5b9a<\/td><td>\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3078\u306e\u4f9d\u5b58\u3092\u907f\u3051\u308b<\/td><\/tr><tr><td>\u30a8\u30e9\u30fc\u51e6\u7406<\/td><td>\u5305\u62ec\u7684\u306a\u4f8b\u5916\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0<\/td><td>\u5b89\u5b9a\u6027\u3068\u4fdd\u5b88\u6027\u306e\u5411\u4e0a<\/td><\/tr><tr><td>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/td><td>\u9069\u5207\u306a\u30d0\u30c3\u30d5\u30a1\u30b5\u30a4\u30ba<\/td><td>\u30e1\u30e2\u30ea\u4f7f\u7528\u52b9\u7387\u306e\u6700\u9069\u5316<\/td><\/tr><tr><td>\u54c1\u8cea\u7ba1\u7406<\/td><td>\u5358\u4f53\u30c6\u30b9\u30c8\u306e\u5145\u5b9f<\/td><td>\u4fe1\u983c\u6027\u306e\u78ba\u4fdd<\/td><\/tr><tr><td>\u904b\u7528\u7ba1\u7406<\/td><td>\u30ed\u30b0\u51fa\u529b\u306e\u5145\u5b9f<\/td><td>\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u52b9\u7387\u5316<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div><\/div>\n\n<div id=\"sgb-css-id-164\">\n<h4 class=\"wp-block-heading\" id=\"i-42\">\u5b9f\u88c5\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8<\/h4>\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 EncodingImplementationChecklist {\n    \/\/ \u63a8\u5968\u3055\u308c\u308b\u5b9f\u88c5\u30d1\u30bf\u30fc\u30f3\n    public static class RecommendedImplementation {\n        \/\/ 1. \u6587\u5b57\u30b3\u30fc\u30c9\u306e\u660e\u793a\u7684\u306a\u6307\u5b9a\n        private static final Charset DEFAULT_CHARSET = StandardCharsets.UTF_8;\n\n        \/\/ 2. \u30ea\u30bd\u30fc\u30b9\u306e\u9069\u5207\u306a\u89e3\u653e\n        public static void processFile(Path path) {\n            try (BufferedReader reader = Files.newBufferedReader(path, DEFAULT_CHARSET)) {\n                \/\/ \u51e6\u7406\n            }\n        }\n\n        \/\/ 3. \u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\n        public static String convertSafely(byte[] input, String sourceEncoding) {\n            try {\n                return new String(input, sourceEncoding);\n            } catch (UnsupportedEncodingException e) {\n                logger.error(\"Encoding error\", e);\n                return new String(input, DEFAULT_CHARSET);\n            }\n        }\n    }\n}<\/pre>\n\n\n<div id=\"sgb-css-id-165\">\n<h3 class=\"wp-block-heading\" id=\"i-43\">7.2 Java 8\u4ee5\u964d\u3067\u306e\u65b0\u6a5f\u80fd\u3068\u6539\u5584\u70b9<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-166\">\n<h4 class=\"wp-block-heading\" id=\"i-44\">Java 8\u3067\u5c0e\u5165\u3055\u308c\u305f\u4e3b\u306a\u6539\u5584\u70b9<\/h4>\n<\/div>\n\n<div id=\"sgb-css-id-167\">\n<p><strong>\u30001. StandardCharsets<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-168\">\n<p>\u3000\u3000\u25cf \u6a19\u6e96\u6587\u5b57\u30bb\u30c3\u30c8\u306e\u5b9a\u6570\u5316<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-169\">\n<p>\u3000\u3000\u25cf \u30bf\u30a4\u30d7\u30bb\u30fc\u30d5\u306a\u6587\u5b57\u30b3\u30fc\u30c9\u6307\u5b9a<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-170\">\n<p><strong>\u30002. String.getBytes()\u306e\u6700\u9069\u5316<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-171\">\n<p>\u3000\u3000\u25cf \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u5411\u4e0a<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-172\">\n<p>\u3000\u3000\u25cf \u30e1\u30e2\u30ea\u52b9\u7387\u306e\u6539\u5584<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-173\">\n<h4 class=\"wp-block-heading\" id=\"i-45\">Java 11\u4ee5\u964d\u306e\u65b0\u6a5f\u80fd<\/h4>\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 ModernEncodingFeatures {\n    public static void demonstrateModernFeatures() {\n        \/\/ Java 11: String#isBlank()\n        String text = \"  \";\n        boolean isEmpty = text.isBlank(); \/\/ true\n\n        \/\/ Java 11: String#strip()\n        String stripped = text.strip();\n\n        \/\/ Java 12: String#indent()\n        String indented = \"Hello\\nWorld\".indent(4);\n\n        \/\/ Java 13: Text Blocks\n        String textBlock = \"\"\"\n            {\n                \"encoding\": \"UTF-8\",\n                \"content\": \"\u30de\u30eb\u30c1\u30e9\u30a4\u30f3\u6587\u5b57\u5217\"\n            }\n            \"\"\";\n    }\n}<\/pre>\n\n\n<div id=\"sgb-css-id-174\">\n<h3 class=\"wp-block-heading\" id=\"i-46\">7.3 \u3055\u3089\u306a\u308b\u5b66\u7fd2\u306e\u305f\u3081\u306e\u30ea\u30bd\u30fc\u30b9\u7d39\u4ecb<\/h3>\n<\/div>\n\n<div id=\"sgb-css-id-175\">\n<h4 class=\"wp-block-heading\" id=\"i-47\">\u63a8\u5968\u5b66\u7fd2\u30ea\u30bd\u30fc\u30b9<\/h4>\n<\/div>\n\n<div id=\"sgb-css-id-176\">\n<p>\u3000<strong>1. \u6280\u8853\u6587\u66f8<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-177\">\n<p>\u3000\u3000\u25cf Java Language Specification<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-178\">\n<p>\u3000\u3000\u25cf Unicode Standard Documentation<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-179\">\n<p>\u3000\u3000\u25cf Character Encoding Recommendations (W3C)<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-180\">\n<p>\u3000<strong>2. \u5b9f\u8df5\u7684\u306a\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-181\">\n<p>\u3000\u3000\u25cf \u30aa\u30f3\u30e9\u30a4\u30f3\u30b3\u30fc\u30b9<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-182\">\n<p>\u3000\u3000\u25cf \u30cf\u30f3\u30ba\u30aa\u30f3\u30ef\u30fc\u30af\u30b7\u30e7\u30c3\u30d7<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-183\">\n<p>\u3000\u3000\u25cf \u30b3\u30fc\u30c9\u30ec\u30d3\u30e5\u30fc\u5b9f\u8df5<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-184\">\n<p>\u3000<strong>3. \u30c4\u30fc\u30eb\u3068\u30e9\u30a4\u30d6\u30e9\u30ea<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-185\">\n<p>\u3000\u3000\u25cf ICU4J\uff08International Components for Unicode\uff09<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-186\">\n<p>\u3000\u3000\u25cf Apache Commons Text<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-187\">\n<p>\u3000\u3000\u25cf juniversalchardet<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-188\">\n<h4 class=\"wp-block-heading\" id=\"i-48\">\u4eca\u5f8c\u306e\u5b66\u7fd2\u30ed\u30fc\u30c9\u30de\u30c3\u30d7<\/h4>\n<\/div>\n\n<div id=\"sgb-css-id-189\">\n<p>\u3000<strong>1. \u57fa\u790e\u77e5\u8b58\u306e\u5f37\u5316<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-190\">\n<p>\u3000\u3000\u25cf Unicode\u6a19\u6e96\u306e\u7406\u89e3<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-191\">\n<p>\u3000\u3000\u25cf \u6587\u5b57\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u7406\u8ad6<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-192\">\n<p>\u3000<strong>2. \u5b9f\u88c5\u30b9\u30ad\u30eb\u306e\u5411\u4e0a<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-193\">\n<p>\u3000\u3000\u25cf \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-194\">\n<p>\u3000\u3000\u25cf \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u8003\u616e\u4e8b\u9805<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-195\">\n<p>\u3000\u3000\u25cf \u5927\u898f\u6a21\u30b7\u30b9\u30c6\u30e0\u5bfe\u5fdc<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-196\">\n<p>\u3000<strong>3. \u5fdc\u7528\u5206\u91ce\u306e\u63a2\u6c42<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-197\">\n<p>\u3000\u3000\u25cf \u56fd\u969b\u5316\uff08i18n\uff09<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-198\">\n<p>\u3000\u3000\u25cf \u591a\u8a00\u8a9e\u51e6\u7406<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-199\">\n<p>\u3000\u3000\u25cf \u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u30b5\u30fc\u30d3\u30b9<\/p>\n<\/div>\n\n\n<h4 class=\"wp-block-heading\" id=\"i-49\">\u307e\u3068\u3081<\/h4>\n\n\n<div id=\"sgb-css-id-200\">\n<p>\u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u306f\u3001Java\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u306b\u304a\u3044\u3066\u91cd\u8981\u306a\u8981\u7d20\u3067\u3059\u3002\u672c\u8a18\u4e8b\u3067\u89e3\u8aac\u3057\u305f\u5185\u5bb9\u3092\u57fa\u306b\u3001\u4ee5\u4e0b\u306e\u70b9\u306b\u6ce8\u610f\u3057\u3066\u5b9f\u88c5\u3092\u9032\u3081\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-201\">\n<p>\u3000<strong>1. \u57fa\u672c\u539f\u5247\u306e\u9075\u5b88<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-202\">\n<p>\u3000\u3000\u25cf \u660e\u793a\u7684\u306a\u6587\u5b57\u30b3\u30fc\u30c9\u6307\u5b9a<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-203\">\n<p>\u3000\u3000\u25cf \u9069\u5207\u306a\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-204\">\n<p>\u3000\u3000\u25cf \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3078\u306e\u914d\u616e<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-205\">\n<p>\u3000<strong>2. \u5b9f\u88c5\u306e\u54c1\u8cea\u78ba\u4fdd<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-206\">\n<p>\u3000\u3000\u25cf \u30e6\u30cb\u30c3\u30c8\u30c6\u30b9\u30c8\u306e\u4f5c\u6210<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-207\">\n<p>\u3000\u3000\u25cf \u30b3\u30fc\u30c9\u30ec\u30d3\u30e5\u30fc\u306e\u5b9f\u65bd<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-208\">\n<p>\u3000\u3000\u25cf \u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306e\u6574\u5099<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-209\">\n<p>\u3000<strong>3. \u7d99\u7d9a\u7684\u306a\u6539\u5584<\/strong><\/p>\n<\/div>\n\n<div id=\"sgb-css-id-210\">\n<p>\u3000\u3000\u25cf \u65b0\u6a5f\u80fd\u306e\u6d3b\u7528<\/p>\n<\/div>\n\n<div id=\"sgb-css-id-211\">\n<p>\u3000\u3000\u25cf \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316<\/p>\n<\/div>\n\n\n<p>\u3000\u3000\u25cf \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56<\/p>\n\n\n<div id=\"sgb-css-id-212\">\n<p>\u3053\u308c\u3089\u306e\u77e5\u8b58\u3068\u5b9f\u8df5\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u6587\u5b57\u5316\u3051\u30c8\u30e9\u30d6\u30eb\u304b\u3089\u89e3\u653e\u3055\u308c\u3001\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u6587\u5b57\u30b3\u30fc\u30c9\u51e6\u7406\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Warning: Undefined array key &#8220;is_admin&#8221; in \/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/ &#8230; <\/p>\n","protected":false},"author":1,"featured_media":2923,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,70,66],"tags":[],"class_list":{"0":"post-766","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-java","8":"category-java-string","9":"category-java-syntax"},"_links":{"self":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/766","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=766"}],"version-history":[{"count":8,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/766\/revisions"}],"predecessor-version":[{"id":2960,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/766\/revisions\/2960"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/media\/2923"}],"wp:attachment":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=766"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=766"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=766"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}