{"id":736,"date":"2025-03-24T08:53:08","date_gmt":"2025-03-23T23:53:08","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=736"},"modified":"2025-03-24T08:53:08","modified_gmt":"2025-03-23T23:53:08","slug":"apache-commons%e5%ae%8c%e5%85%a8%e3%82%ac%e3%82%a4%e3%83%89%ef%bc%9a%e9%96%8b%e7%99%ba%e5%8a%b9%e7%8e%87%e3%82%923%e5%80%8d%e3%81%ab%e3%81%99%e3%82%8b15%e3%81%ae%e5%ae%9f%e8%b7%b5%e3%83%86%e3%82%af","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=736","title":{"rendered":"Apache Commons\u5b8c\u5168\u30ac\u30a4\u30c9\uff1a\u958b\u767a\u52b9\u7387\u30923\u500d\u306b\u3059\u308b15\u306e\u5b9f\u8df5\u30c6\u30af\u30cb\u30c3\u30af"},"content":{"rendered":"\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\">Apache Commons\u3068\u306f\uff1a\u958b\u767a\u52b9\u7387\u3092\u5287\u7684\u306b\u5411\u4e0a\u3055\u305b\u308b\u4e07\u80fd\u30c4\u30fc\u30eb<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-1\">Apache Commons\u306e\u5b9a\u7fa9\u3068\u91cd\u8981\u6027<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-2\">\u4e3b\u8981\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u6982\u8981\u3068\u7279\u5fb4<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-3\">\u958b\u767a\u73fe\u5834\u3067\u5373\u4f7f\u3048\u308bApache Commons\u6d3b\u7528\u8853<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-4\">StringUtils\u3067\u6587\u5b57\u5217\u51e6\u7406\u3092\u52b9\u7387\u5316<\/a>      <\/li>      <li>        <a href=\"#i-5\">CollectionUtils\u3067\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u64cd\u4f5c\u3092\u7c21\u6f54\u306b<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-6\">FileUtils\u3067\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u3092\u5b89\u5168\u306b<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-7\">Apache Commons\u306b\u3088\u308b\u30b3\u30fc\u30c9\u54c1\u8cea\u5411\u4e0a\u30c6\u30af\u30cb\u30c3\u30af<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-8\">NullPointerException\u5bfe\u7b56\u306bObjectUtils<\/a>      <\/li>      <li>        <a href=\"#i-9\">ValidationUtils\u3067\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u51e6\u7406\u3092\u7d71\u4e00<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-10\">Lang3\u306b\u3088\u308b\u5805\u7262\u306a\u30b3\u30fc\u30c9\u4f5c\u6210<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-11\">\u5b9f\u8df5\u7684\u306aApache Commons\u6d3b\u7528\u30d1\u30bf\u30fc\u30f3<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-12\">\u30c7\u30fc\u30bf\u5909\u63db\u51e6\u7406\u306e\u52b9\u7387\u5316\u4e8b\u4f8b<\/a>      <\/li>      <li>        <a href=\"#i-13\">\u65e5\u4ed8\u51e6\u7406\u306e\u7c21\u7565\u5316\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-14\">\u4e26\u884c\u51e6\u7406\u3067\u306e\u6d3b\u7528\u65b9\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-15\">Apache Commons\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-16\">\u3088\u304f\u3042\u308b\u5b9f\u88c5\u30df\u30b9\u3068\u305d\u306e\u5bfe\u51e6\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-17\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u30dd\u30a4\u30f3\u30c8<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-18\">\u30d0\u30fc\u30b8\u30e7\u30f3\u9593\u306e\u975e\u4e92\u63db\u6027\u3078\u306e\u5bfe\u5fdc<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-19\">Apache Commons\u3092\u4f7f\u3063\u305f\u958b\u767a\u52b9\u7387\u5316\u306e\u5b9f\u8df5\u4f8b<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-20\">\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306e\u5c0e\u5165\u4e8b\u4f8b<\/a>      <\/li>      <li>        <a href=\"#i-21\">\u5c0e\u5165\u306b\u3088\u308b\u958b\u767a\u5de5\u6570\u524a\u6e1b\u306e\u5177\u4f53\u4f8b<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-22\">\u4eca\u5f8c\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u30a2\u30c3\u30d7\u306b\u5099\u3048\u305f\u8a2d\u8a08\u65b9\u91dd<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-23\">\u307e\u3068\u3081\uff1aApache Commons\u3067\u5b9f\u73fe\u3059\u308b\u52b9\u7387\u7684\u306a\u958b\u767a<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-24\">\u958b\u767a\u52b9\u7387\u5316\u306e\u30ad\u30fc\u30dd\u30a4\u30f3\u30c8<\/a>      <\/li>      <li>        <a href=\"#i-25\">\u5c0e\u5165\u52b9\u679c\u306e\u307e\u3068\u3081<\/a>      <\/li>      <li>        <a href=\"#i-26\">\u4eca\u5f8c\u306e\u5c55\u671b<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-27\">\u5b9f\u8df5\u306e\u305f\u3081\u306e\u30ed\u30fc\u30c9\u30de\u30c3\u30d7<\/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\">Apache Commons\u3068\u306f\uff1a\u958b\u767a\u52b9\u7387\u3092\u5287\u7684\u306b\u5411\u4e0a\u3055\u305b\u308b\u4e07\u80fd\u30c4\u30fc\u30eb<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-1\">Apache Commons\u306e\u5b9a\u7fa9\u3068\u91cd\u8981\u6027<\/h3>\n\n\n\n<p>Apache Commons\u306f\u3001Java\u958b\u767a\u8005\u306b\u3068\u3063\u3066\u5fc5\u8981\u4e0d\u53ef\u6b20\u306a\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u30e9\u30a4\u30d6\u30e9\u30ea\u7fa4\u3067\u3059\u3002Apache Software Foundation\u304c\u63d0\u4f9b\u3059\u308b\u518d\u5229\u7528\u53ef\u80fd\u306aJava\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3067\u3042\u308a\u3001\u65e5\u3005\u306e\u958b\u767a\u4f5c\u696d\u3092\u5927\u5e45\u306b\u52b9\u7387\u5316\u3059\u308b\u6a5f\u80fd\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\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\u7279\u5fb4\uff1a<\/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\">\n<li>\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u3067\u4fe1\u983c\u6027\u304c\u9ad8\u3044<\/li>\n\n\n\n<li>\u5e83\u7bc4\u306a\u30c6\u30b9\u30c8\u3068\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u30ec\u30d3\u30e5\u30fc\u306b\u3088\u308a\u54c1\u8cea\u304c\u4fdd\u8a3c\u3055\u308c\u3066\u3044\u308b<\/li>\n\n\n\n<li>Java\u306e\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u88dc\u5b8c\u3059\u308b\u8c4a\u5bcc\u306a\u6a5f\u80fd\u3092\u63d0\u4f9b<\/li>\n\n\n\n<li>\u5c0e\u5165\u304c\u5bb9\u6613\u3067\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u30b3\u30b9\u30c8\u304c\u4f4e\u3044<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<p class=\"is-style-sango-paragraph-memo-alt\"><strong>\u958b\u767a\u52b9\u7387\u5411\u4e0a\u306e\u30dd\u30a4\u30f3\u30c8\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30dc\u30a4\u30e9\u30fc\u30d7\u30ec\u30fc\u30c8\u30b3\u30fc\u30c9\u306e\u524a\u6e1b<\/li>\n\n\n\n<li>\u4e00\u8cab\u6027\u306e\u3042\u308b\u5b9f\u88c5\u306e\u5b9f\u73fe<\/li>\n\n\n\n<li>\u30d0\u30b0\u306e\u5c11\u306a\u3044\u5b89\u5b9a\u3057\u305f\u51e6\u7406\u306e\u5b9f\u73fe<\/li>\n\n\n\n<li>\u30b3\u30fc\u30c9\u53ef\u8aad\u6027\u306e\u5411\u4e0a<\/li>\n<\/ol>\n\n\n\n<p class=\"is-style-sango-paragraph-idea-alt\"><strong>\u5c0e\u5165\u65b9\u6cd5\uff1a<\/strong><\/p>\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=\"\">&lt;!-- Maven\u4f9d\u5b58\u95a2\u4fc2\u306e\u4f8b --&gt;\n&lt;dependency&gt;\n    &lt;groupId&gt;org.apache.commons&lt;\/groupId&gt;\n    &lt;artifactId&gt;commons-lang3&lt;\/artifactId&gt;\n    &lt;version&gt;3.12.0&lt;\/version&gt;\n&lt;\/dependency&gt;<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-2\">\u4e3b\u8981\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u6982\u8981\u3068\u7279\u5fb4<\/h3>\n\n\n\n<p>Apache Commons\u306e\u4ee3\u8868\u7684\u306a\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3068\u3001\u305d\u308c\u305e\u308c\u306e\u4e3b\u306a\u7528\u9014\u3092\u7d39\u4ecb\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Commons Lang3<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u6587\u5b57\u5217\u64cd\u4f5c<\/li>\n\n\n\n<li>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u64cd\u4f5c<\/li>\n\n\n\n<li>\u30b7\u30b9\u30c6\u30e0\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u6587\u5b57\u5217\u64cd\u4f5c\u306e\u4f8b\nString result = StringUtils.stripToNull(\"  Hello World  \");\n\/\/ =&gt; \"Hello World\"\n\n\/\/ \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6bd4\u8f03\u306e\u4f8b\nboolean isEqual = ObjectUtils.equals(obj1, obj2);<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>Commons Collections<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u62e1\u5f35\u30b3\u30ec\u30af\u30b7\u30e7\u30f3API<\/li>\n\n\n\n<li>\u9ad8\u5ea6\u306a\u30c7\u30fc\u30bf\u69cb\u9020<\/li>\n\n\n\n<li>\u30a4\u30c6\u30ec\u30fc\u30bf\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u64cd\u4f5c\u306e\u4f8b\nList&lt;String&gt; list = CollectionUtils.emptyIfNull(nullableList);\n\/\/ null\u306e\u5834\u5408\u306f\u7a7a\u30ea\u30b9\u30c8\u3092\u8fd4\u3059<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>Commons IO<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c<\/li>\n\n\n\n<li>\u30b9\u30c8\u30ea\u30fc\u30e0\u64cd\u4f5c<\/li>\n\n\n\n<li>\u30d5\u30a1\u30a4\u30eb\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u306e\u4f8b\nFileUtils.copyFile(sourceFile, destFile);\n\/\/ \u30d5\u30a1\u30a4\u30eb\u306e\u30b3\u30d4\u30fc\u3092\u5b89\u5168\u306b\u5b9f\u884c<\/pre>\n\n\n\n<ol start=\"4\" class=\"wp-block-list\">\n<li><strong>Commons Configuration<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u7ba1\u7406<\/li>\n\n\n\n<li>\u591a\u69d8\u306a\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u30b5\u30dd\u30fc\u30c8<\/li>\n\n\n\n<li>\u52d5\u7684\u306a\u8a2d\u5b9a\u5909\u66f4<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u8fbc\u307f\u4f8b\nConfiguration config = new PropertiesConfiguration(\"config.properties\");\nString value = config.getString(\"app.name\");<\/pre>\n\n\n\n<ol start=\"5\" class=\"wp-block-list\">\n<li><strong>Commons Math<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u6570\u5b66\u30fb\u7d71\u8a08\u51e6\u7406<\/li>\n\n\n\n<li>\u7dda\u5f62\u4ee3\u6570<\/li>\n\n\n\n<li>\u78ba\u7387\u5206\u5e03<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u7d71\u8a08\u8a08\u7b97\u306e\u4f8b\ndouble mean = new Mean().evaluate(values);\ndouble std = new StandardDeviation().evaluate(values);<\/pre>\n\n\n\n<p class=\"is-style-sango-paragraph-idea-alt\"><strong>\u5c0e\u5165\u52b9\u679c\uff1a<\/strong><\/p>\n\n\n<div id=\"id-00868126-c255-48d0-9e3b-16c39ecb378b\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u9805\u76ee<\/th><th>\u52b9\u679c<\/th><\/tr><\/thead><tbody><tr><td>\u958b\u767a\u6642\u9593<\/td><td>\u7d0440%\u524a\u6e1b<\/td><\/tr><tr><td>\u30b3\u30fc\u30c9\u884c\u6570<\/td><td>\u7d0430%\u524a\u6e1b<\/td><\/tr><tr><td>\u30d0\u30b0\u767a\u751f\u7387<\/td><td>\u7d0450%\u524a\u6e1b<\/td><\/tr><tr><td>\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6027<\/td><td>\u5927\u5e45\u306b\u5411\u4e0a<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u3053\u308c\u3089\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u9069\u5207\u306b\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u958b\u767a\u52b9\u7387\u3092\u98db\u8e8d\u7684\u306b\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u7279\u306b\u3001\u30c1\u30fc\u30e0\u958b\u767a\u306b\u304a\u3044\u3066\u306f\u3001\u5171\u901a\u306e\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u3068\u3057\u3066\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30b3\u30fc\u30c9\u306e\u4e00\u8cab\u6027\u3068\u54c1\u8cea\u3092\u7dad\u6301\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u5b9f\u8df5\u7684\u306a\u6d3b\u7528\u65b9\u6cd5\u306b\u3064\u3044\u3066\u3001\u5177\u4f53\u7684\u306a\u30b3\u30fc\u30c9\u4f8b\u3092\u4ea4\u3048\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-3\">\u958b\u767a\u73fe\u5834\u3067\u5373\u4f7f\u3048\u308bApache Commons\u6d3b\u7528\u8853<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-4\">StringUtils\u3067\u6587\u5b57\u5217\u51e6\u7406\u3092\u52b9\u7387\u5316<\/h3>\n\n\n\n<p>StringUtils\u306f\u3001\u6587\u5b57\u5217\u64cd\u4f5c\u306b\u95a2\u3059\u308b\u6700\u3082\u4e00\u822c\u7684\u306a\u8ab2\u984c\u3092\u89e3\u6c7a\u3059\u308b\u5f37\u529b\u306a\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u30af\u30e9\u30b9\u3067\u3059\u3002<br>null\u30bb\u30fc\u30d5\u306a\u51e6\u7406\u3068\u8c4a\u5bcc\u306a\u30e1\u30bd\u30c3\u30c9\u306b\u3088\u308a\u3001\u6587\u5b57\u5217\u51e6\u7406\u306e\u4fe1\u983c\u6027\u3068\u52b9\u7387\u3092\u5927\u5e45\u306b\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"is-style-sango-paragraph-memo-alt\"><strong>\u4e3b\u8981\u306a\u6d3b\u7528\u30b7\u30fc\u30f3\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>null\u5b89\u5168\u306a\u6587\u5b57\u5217\u30c1\u30a7\u30c3\u30af<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5f93\u6765\u306e\u65b9\u6cd5\nif (str != null &amp;&amp; !str.trim().isEmpty()) {\n    \/\/ \u51e6\u7406\n}\n\n\/\/ StringUtils\u3092\u4f7f\u7528\nif (StringUtils.isNotBlank(str)) {\n    \/\/ \u51e6\u7406\n}<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u6587\u5b57\u5217\u306e\u5909\u63db\u3068\u52a0\u5de5<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u6587\u5b57\u5217\u306e\u5de6\u53f3\u30c8\u30ea\u30e0\uff06null\u5bfe\u5fdc\nString cleaned = StringUtils.trimToEmpty(dirtyString);\n\n\/\/ \u6587\u5b57\u5217\u306e\u7701\u7565\nString abbreviated = StringUtils.abbreviate(\"\u9577\u3044\u6587\u5b57\u5217\", 10);  \/\/ =&gt; \"\u9577\u3044\u6587\u5b57...\"\n\n\/\/ \u6587\u5b57\u5217\u306e\u5de6\u53f3\u30d1\u30c7\u30a3\u30f3\u30b0\nString padded = StringUtils.center(\"\u30c6\u30ad\u30b9\u30c8\", 20, '*');  \/\/ =&gt; \"****\u30c6\u30ad\u30b9\u30c8****\"<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u6587\u5b57\u5217\u306e\u691c\u7d22\u3068\u62bd\u51fa<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u90e8\u5206\u6587\u5b57\u5217\u306e\u30ab\u30a6\u30f3\u30c8\nint count = StringUtils.countMatches(\"hello hello world\", \"hello\");  \/\/ =&gt; 2\n\n\/\/ \u6700\u5f8c\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u5b89\u5168\u306b\u53d6\u5f97\nint lastIndex = StringUtils.lastIndexOf(\"abc\", \"b\");  \/\/ =&gt; 1<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-5\">CollectionUtils\u3067\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u64cd\u4f5c\u3092\u7c21\u6f54\u306b<\/h3>\n\n\n\n<p>CollectionUtils\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u306e\u64cd\u4f5c\u3092\u3088\u308a\u7c21\u6f54\u3067\u5b89\u5168\u306b\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002<br>\u7279\u306b\u3001null\u5b89\u5168\u6027\u3068\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u6a5f\u80fd\u304c\u958b\u767a\u52b9\u7387\u3092\u5927\u304d\u304f\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"is-style-sango-paragraph-memo-alt\"><strong>\u5b9f\u8df5\u7684\u306a\u4f7f\u7528\u4f8b\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u306e\u5b89\u5168\u306a\u64cd\u4f5c<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ null\u30bb\u30fc\u30d5\u306a\u7a7a\u30c1\u30a7\u30c3\u30af\nif (CollectionUtils.isEmpty(collection)) {\n    \/\/ \u7a7a\u306e\u5834\u5408\u306e\u51e6\u7406\n}\n\n\/\/ null\u30bb\u30fc\u30d5\u306a\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u7d50\u5408\nList&lt;String&gt; union = CollectionUtils.union(list1, list2);<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3068\u5909\u63db<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u6761\u4ef6\u306b\u57fa\u3065\u304f\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\nCollection&lt;Integer&gt; filtered = CollectionUtils.select(\n    numbers, \n    num -&gt; num &gt; 10\n);\n\n\/\/ \u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u306e\u5909\u63db\nCollection&lt;String&gt; transformed = CollectionUtils.collect(\n    numbers,\n    Object::toString\n);<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u306e\u6bd4\u8f03\u3068\u64cd\u4f5c<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5dee\u5206\u306e\u62bd\u51fa\nCollection&lt;String&gt; diff = CollectionUtils.subtract(list1, list2);\n\n\/\/ \u5171\u901a\u8981\u7d20\u306e\u78ba\u8a8d\nboolean hasIntersection = CollectionUtils.containsAny(list1, list2);<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-6\">FileUtils\u3067\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u3092\u5b89\u5168\u306b<\/h3>\n\n\n\n<p>FileUtils\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u306b\u95a2\u3059\u308b\u591a\u304f\u306e\u30dc\u30a4\u30e9\u30fc\u30d7\u30ec\u30fc\u30c8\u30b3\u30fc\u30c9\u3092\u524a\u6e1b\u3057\u3001<br>\u3088\u308a\u5b89\u5168\u3067\u52b9\u7387\u7684\u306a\u30d5\u30a1\u30a4\u30eb\u51e6\u7406\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"is-style-sango-paragraph-memo-alt\"><strong>\u5b9f\u88c5\u4f8b\u3068\u6d3b\u7528\u30dd\u30a4\u30f3\u30c8\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u66f8\u304d<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30d5\u30a1\u30a4\u30eb\u5168\u4f53\u3092\u6587\u5b57\u5217\u3068\u3057\u3066\u8aad\u307f\u8fbc\u307f\nString content = FileUtils.readFileToString(file, StandardCharsets.UTF_8);\n\n\/\/ \u6587\u5b57\u5217\u3092\u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304d\u8fbc\u307f\nFileUtils.writeStringToFile(file, content, StandardCharsets.UTF_8);\n\n\/\/ \u30d5\u30a1\u30a4\u30eb\u306e\u30b3\u30d4\u30fc\nFileUtils.copyFile(sourceFile, destFile);<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u64cd\u4f5c<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u518d\u5e30\u7684\u30b3\u30d4\u30fc\nFileUtils.copyDirectory(srcDir, destDir);\n\n\/\/ \u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u30b5\u30a4\u30ba\u306e\u8a08\u7b97\nlong size = FileUtils.sizeOfDirectory(directory);\n\n\/\/ \u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u524a\u9664\nFileUtils.deleteDirectory(directory);<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u30d5\u30a1\u30a4\u30eb\u691c\u7d22\u3068\u64cd\u4f5c<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u62e1\u5f35\u5b50\u306b\u3088\u308b\u30d5\u30a1\u30a4\u30eb\u691c\u7d22\nCollection&lt;File&gt; files = FileUtils.listFiles(\n    directory,\n    new String[] {\"txt\", \"log\"},\n    true\n);\n\n\/\/ \u30d5\u30a1\u30a4\u30eb\u306e\u79fb\u52d5\nFileUtils.moveFile(sourceFile, destFile);<\/pre>\n\n\n\n<p class=\"is-style-sango-paragraph-idea-alt\"><strong>\u5b9f\u88c5\u52b9\u679c\u306e\u6bd4\u8f03\uff1a<\/strong><\/p>\n\n\n<div id=\"id-9f62ee87-7611-4df8-af44-799ef29caf18\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u51e6\u7406\u5185\u5bb9<\/th><th>\u5f93\u6765\u306e\u30b3\u30fc\u30c9\u884c\u6570<\/th><th>Commons\u4f7f\u7528\u6642\u306e\u884c\u6570<\/th><th>\u524a\u6e1b\u7387<\/th><\/tr><\/thead><tbody><tr><td>\u6587\u5b57\u5217\u51e6\u7406<\/td><td>15-20\u884c<\/td><td>3-5\u884c<\/td><td>\u7d0475%<\/td><\/tr><tr><td>\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u64cd\u4f5c<\/td><td>20-25\u884c<\/td><td>5-7\u884c<\/td><td>\u7d0470%<\/td><\/tr><tr><td>\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c<\/td><td>30-40\u884c<\/td><td>8-10\u884c<\/td><td>\u7d0475%<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u3053\u308c\u3089\u306e\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u4ee5\u4e0b\u306e\u30e1\u30ea\u30c3\u30c8\u304c\u5f97\u3089\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u5411\u4e0a<\/li>\n\n\n\n<li>\u30d0\u30b0\u306e\u4f4e\u6e1b<\/li>\n\n\n\n<li>\u958b\u767a\u901f\u5ea6\u306e\u5411\u4e0a<\/li>\n\n\n\n<li>\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6027\u306e\u6539\u5584<\/li>\n<\/ul>\n\n\n\n<p>\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u3092\u4f7f\u7528\u3057\u305f\u30b3\u30fc\u30c9\u54c1\u8cea\u5411\u4e0a\u306e\u30c6\u30af\u30cb\u30c3\u30af\u306b\u3064\u3044\u3066\u3001\u3088\u308a\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-7\">Apache Commons\u306b\u3088\u308b\u30b3\u30fc\u30c9\u54c1\u8cea\u5411\u4e0a\u30c6\u30af\u30cb\u30c3\u30af<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-8\">NullPointerException\u5bfe\u7b56\u306bObjectUtils<\/h3>\n\n\n\n<p>NullPointerException\u306f\u3001Java\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u6700\u3082\u4e00\u822c\u7684\u306a\u30e9\u30f3\u30bf\u30a4\u30e0\u30a8\u30e9\u30fc\u306e1\u3064\u3067\u3059\u3002ObjectUtils\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u5805\u7262\u306a\u30b3\u30fc\u30c9\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>null\u5b89\u5168\u306a\u6bd4\u8f03\u3068\u8a55\u4fa1<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5f93\u6765\u306e\u65b9\u6cd5\npublic boolean compareObjects(Object obj1, Object obj2) {\n    if (obj1 == null &amp;&amp; obj2 == null) {\n        return true;\n    }\n    if (obj1 == null || obj2 == null) {\n        return false;\n    }\n    return obj1.equals(obj2);\n}\n\n\/\/ ObjectUtils\u3092\u4f7f\u7528\npublic boolean compareObjects(Object obj1, Object obj2) {\n    return ObjectUtils.equals(obj1, obj2);  \/\/ null\u30bb\u30fc\u30d5\u306a\u6bd4\u8f03\n}<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u306e\u8a2d\u5b9a<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ null\u6642\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u6307\u5b9a\nString result = ObjectUtils.defaultIfNull(nullableString, \"\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\");\n\n\/\/ \u6761\u4ef6\u4ed8\u304d\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\nInteger value = ObjectUtils.defaultIfNull(\n    nullableInteger,\n    () -&gt; calculateDefaultValue()  \/\/ \u5fc5\u8981\u306a\u6642\u3060\u3051\u8a08\u7b97\n);<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>null\u5b89\u5168\u306a\u30cf\u30c3\u30b7\u30e5\u30b3\u30fc\u30c9\u751f\u6210<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public int generateHashCode(Object... values) {\n    return ObjectUtils.hashCodeMulti(values);  \/\/ \u8907\u6570\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u5b89\u5168\u306a\u30cf\u30c3\u30b7\u30e5\u30b3\u30fc\u30c9\u751f\u6210\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-9\">ValidationUtils\u3067\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u51e6\u7406\u3092\u7d71\u4e00<\/h3>\n\n\n\n<p>\u4e00\u8cab\u6027\u306e\u3042\u308b\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u51e6\u7406\u306f\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u54c1\u8cea\u3092\u5927\u304d\u304f\u5de6\u53f3\u3057\u307e\u3059\u3002ValidationUtils\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u7d71\u4e00\u3055\u308c\u305f\u691c\u8a3c\u30ed\u30b8\u30c3\u30af\u3092\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u57fa\u672c\u7684\u306a\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ ValidationUtils\u3092\u4f7f\u7528\u3057\u305f\u691c\u8a3c\u30af\u30e9\u30b9\u306e\u4f8b\npublic class UserValidator {\n    public void validate(User user) {\n        Validate.notNull(user, \"\u30e6\u30fc\u30b6\u30fc\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304cnull\u3067\u3059\");\n        Validate.notEmpty(user.getName(), \"\u30e6\u30fc\u30b6\u30fc\u540d\u306f\u5fc5\u9808\u3067\u3059\");\n        Validate.isTrue(user.getAge() &gt;= 0, \"\u5e74\u9f62\u306f0\u4ee5\u4e0a\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\");\n    }\n}<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u306e\u691c\u8a3c<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30ea\u30b9\u30c8\u306e\u691c\u8a3c\nValidate.noNullElements(list, \"\u30ea\u30b9\u30c8\u306bnull\u8981\u7d20\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\");\nValidate.notEmpty(collection, \"\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u304c\u7a7a\u3067\u3059\");\n\n\/\/ \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u7bc4\u56f2\u30c1\u30a7\u30c3\u30af\nValidate.validIndex(list, index, \"\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u304c\u7bc4\u56f2\u5916\u3067\u3059: %d\", index);<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u30ab\u30b9\u30bf\u30e0\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class CustomValidator {\n    public static void validateEmail(String email) {\n        Validate.notNull(email, \"\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306f\u5fc5\u9808\u3067\u3059\");\n        Validate.matchesPattern(\n            email,\n            \"^[A-Za-z0-9+_.-]+@(.+)$\",\n            \"\u7121\u52b9\u306a\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u5f62\u5f0f\u3067\u3059: %s\", \n            email\n        );\n    }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-10\">Lang3\u306b\u3088\u308b\u5805\u7262\u306a\u30b3\u30fc\u30c9\u4f5c\u6210<\/h3>\n\n\n\n<p>Apache Commons Lang3\u306f\u3001\u69d8\u3005\u306a\u9ad8\u5ea6\u306a\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u3092\u63d0\u4f9b\u3057\u3001\u3088\u308a\u5805\u7262\u306a\u30b3\u30fc\u30c9\u306e\u4f5c\u6210\u3092\u652f\u63f4\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u578b\u5b89\u5168\u306a\u6587\u5b57\u5217\u64cd\u4f5c<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ StringUtils\uff08Lang3\uff09\u306b\u3088\u308b\u5b89\u5168\u306a\u6587\u5b57\u5217\u64cd\u4f5c\npublic class StringProcessor {\n    public String processText(String input) {\n        \/\/ null\u5b89\u5168\u306a\u51e6\u7406\u30c1\u30a7\u30fc\u30f3\n        return StringUtils.trimToEmpty(input)          \/\/ null\u306e\u5834\u5408\u306f\u7a7a\u6587\u5b57\n            .replaceAll(\"\\\\s+\", \" \")                  \/\/ \u9023\u7d9a\u7a7a\u767d\u306e\u6b63\u898f\u5316\n            .transform(StringUtils::capitalize);       \/\/ \u5148\u982d\u6587\u5b57\u3092\u5927\u6587\u5b57\u5316\n    }\n}<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u4f8b\u5916\u51e6\u7406\u306e\u6539\u5584<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ ExceptionUtils\u3092\u4f7f\u7528\u3057\u305f\u4f8b\u5916\u51e6\u7406\npublic class ExceptionHandler {\n    public void handleException(Exception e) {\n        \/\/ \u30eb\u30fc\u30c8\u539f\u56e0\u306e\u53d6\u5f97\n        Throwable rootCause = ExceptionUtils.getRootCause(e);\n\n        \/\/ \u30b9\u30bf\u30c3\u30af\u30c8\u30ec\u30fc\u30b9\u3092\u6587\u5b57\u5217\u3068\u3057\u3066\u53d6\u5f97\n        String stackTrace = ExceptionUtils.getStackTrace(e);\n\n        \/\/ \u4f8b\u5916\u30c1\u30a7\u30fc\u30f3\u306e\u5168\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u53d6\u5f97\n        String[] messages = ExceptionUtils.getRootCauseStackTrace(e);\n\n        \/\/ \u30ed\u30b0\u51fa\u529b\u3084\u9069\u5207\u306a\u51e6\u7406\n        logger.error(\"\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f: {}\", rootCause.getMessage());\n    }\n}<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u30b7\u30b9\u30c6\u30e0\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u306e\u6d3b\u7528<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ SystemUtils\u3092\u4f7f\u7528\u3057\u305f\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u4f9d\u5b58\u306e\u51e6\u7406\npublic class SystemHelper {\n    public String getSystemInfo() {\n        StringBuilder info = new StringBuilder();\n        info.append(\"OS\u540d: \").append(SystemUtils.OS_NAME).append(\"\\n\");\n        info.append(\"Java\u30d0\u30fc\u30b8\u30e7\u30f3: \").append(SystemUtils.JAVA_VERSION).append(\"\\n\");\n        info.append(\"\u30e6\u30fc\u30b6\u30fc\u30db\u30fc\u30e0: \").append(SystemUtils.getUserHome()).append(\"\\n\");\n        return info.toString();\n    }\n}<\/pre>\n\n\n\n<p class=\"is-style-sango-paragraph-idea-alt\"><strong>\u30b3\u30fc\u30c9\u54c1\u8cea\u5411\u4e0a\u306e\u52b9\u679c\uff1a<\/strong><\/p>\n\n\n<div id=\"id-58157118-d5a8-451e-a566-8d13cb9d57a7\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u54c1\u8cea\u6307\u6a19<\/th><th>\u6539\u5584\u52b9\u679c<\/th><\/tr><\/thead><tbody><tr><td>\u30d0\u30b0\u767a\u751f\u7387<\/td><td>\u7d0460%\u6e1b\u5c11<\/td><\/tr><tr><td>\u30b3\u30fc\u30c9\u53ef\u8aad\u6027<\/td><td>\u5927\u5e45\u306b\u5411\u4e0a<\/td><\/tr><tr><td>\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6027<\/td><td>\u7d0440%\u5411\u4e0a<\/td><\/tr><tr><td>\u30c6\u30b9\u30c8\u30ab\u30d0\u30ec\u30c3\u30b8<\/td><td>\u7d0430%\u5411\u4e0a<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p class=\"is-style-sango-paragraph-memo-alt\"><strong>\u5b9f\u88c5\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u4e00\u8cab\u3057\u305f\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u6226\u7565\u306e\u63a1\u7528<\/li>\n\n\n\n<li>null\u5b89\u5168\u6027\u3092\u5e38\u306b\u610f\u8b58\u3057\u305f\u5b9f\u88c5<\/li>\n\n\n\n<li>\u4f8b\u5916\u51e6\u7406\u306e\u6a19\u6e96\u5316<\/li>\n\n\n\n<li>\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u4f9d\u5b58\u306e\u30b3\u30fc\u30c9\u306e\u62bd\u8c61\u5316<\/li>\n<\/ol>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u9069\u5207\u306b\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u52b9\u7387\u7684\u306b\u958b\u767a\u3067\u304d\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u624b\u6cd5\u3092\u5b9f\u969b\u306e\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306b\u9069\u7528\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-11\">\u5b9f\u8df5\u7684\u306aApache Commons\u6d3b\u7528\u30d1\u30bf\u30fc\u30f3<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-12\">\u30c7\u30fc\u30bf\u5909\u63db\u51e6\u7406\u306e\u52b9\u7387\u5316\u4e8b\u4f8b<\/h3>\n\n\n\n<p>\u30c7\u30fc\u30bf\u5909\u63db\u306f\u591a\u304f\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u5fc5\u8981\u3068\u306a\u308b\u51e6\u7406\u3067\u3059\u3002Apache Commons\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u52b9\u7387\u7684\u3067\u5b89\u5168\u306a\u30c7\u30fc\u30bf\u5909\u63db\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>JSON\u30fbXML\u5909\u63db\u30d1\u30bf\u30fc\u30f3<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ BeanUtils\u3092\u4f7f\u7528\u3057\u305f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u5909\u63db\npublic class DataConverter {\n    public static UserDTO convertToDTO(User user) {\n        UserDTO dto = new UserDTO();\n        try {\n            \/\/ \u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u81ea\u52d5\u30b3\u30d4\u30fc\n            BeanUtils.copyProperties(dto, user);\n        } catch (Exception e) {\n            throw new ConversionException(\"\u5909\u63db\u30a8\u30e9\u30fc\", e);\n        }\n        return dto;\n    }\n\n    \/\/ \u30d0\u30c3\u30c1\u51e6\u7406\u3067\u306e\u6d3b\u7528\u4f8b\n    public List&lt;UserDTO&gt; convertBatch(List&lt;User&gt; users) {\n        return users.stream()\n            .map(this::convertToDTO)\n            .collect(Collectors.toList());\n    }\n}<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>CSV\u30fb\u30a8\u30af\u30bb\u30eb\u5909\u63db<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class FileConverter {\n    \/\/ CSV\u30d5\u30a1\u30a4\u30eb\u306e\u51e6\u7406\n    public List&lt;Record&gt; processCSV(File csvFile) {\n        List&lt;Record&gt; records = new ArrayList&lt;&gt;();\n        try (CSVParser parser = CSVParser.parse(\n            csvFile, \n            StandardCharsets.UTF_8, \n            CSVFormat.DEFAULT.withHeader()\n        )) {\n            for (CSVRecord csvRecord : parser) {\n                Record record = new Record();\n                record.setField1(csvRecord.get(\"field1\"));\n                record.setField2(csvRecord.get(\"field2\"));\n                records.add(record);\n            }\n        }\n        return records;\n    }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-13\">\u65e5\u4ed8\u51e6\u7406\u306e\u7c21\u7565\u5316\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p>DateUtils\u3068TimeUtils\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u8907\u96d1\u306a\u65e5\u4ed8\u51e6\u7406\u3092\u7c21\u6f54\u306b\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u65e5\u4ed8\u8a08\u7b97\u306e\u52b9\u7387\u5316<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class DateProcessor {\n    \/\/ \u65e5\u4ed8\u306e\u52a0\u7b97\u30fb\u6e1b\u7b97\n    public Date calculateDueDate(Date startDate, int days) {\n        return DateUtils.addDays(startDate, days);\n    }\n\n    \/\/ \u55b6\u696d\u65e5\u306e\u8a08\u7b97\n    public Date addBusinessDays(Date date, int days) {\n        Date result = date;\n        int addedDays = 0;\n        while (addedDays &lt; days) {\n            result = DateUtils.addDays(result, 1);\n            if (!DateUtils.isSameDay(result, Calendar.SATURDAY) &amp;&amp; \n                !DateUtils.isSameDay(result, Calendar.SUNDAY)) {\n                addedDays++;\n            }\n        }\n        return result;\n    }\n}<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u65e5\u4ed8\u6bd4\u8f03\u3068\u7bc4\u56f2\u30c1\u30a7\u30c3\u30af<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class DateValidator {\n    public boolean isWithinRange(Date target, Date start, Date end) {\n        return DateUtils.isSameDay(target, start) ||\n               DateUtils.isSameDay(target, end) ||\n               (target.after(start) &amp;&amp; target.before(end));\n    }\n\n    \/\/ \u671f\u9593\u30c1\u30a7\u30c3\u30af\n    public boolean isExpired(Date targetDate) {\n        return DateUtils.truncatedCompareTo(\n            targetDate,\n            new Date(),\n            Calendar.DAY_OF_MONTH\n        ) &lt; 0;\n    }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-14\">\u4e26\u884c\u51e6\u7406\u3067\u306e\u6d3b\u7528\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u4e26\u884c\u51e6\u7406\u306b\u304a\u3044\u3066\u3082\u3001Apache Commons\u306f\u52b9\u679c\u7684\u306a\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u4e26\u884c\u51e6\u7406\u306e\u5236\u5fa1<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class ConcurrentProcessor {\n    private final CircuitBreaker breaker = new CircuitBreaker();\n\n    \/\/ \u4e26\u884c\u5b9f\u884c\u306e\u5236\u5fa1\n    public void processWithBreaker(Runnable task) {\n        try {\n            breaker.checkState();  \/\/ \u72b6\u614b\u30c1\u30a7\u30c3\u30af\n            task.run();\n            breaker.success();     \/\/ \u6210\u529f\u3092\u8a18\u9332\n        } catch (Exception e) {\n            breaker.failure();     \/\/ \u5931\u6557\u3092\u8a18\u9332\n            throw e;\n        }\n    }\n}<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30d0\u30c3\u30c1\u51e6\u7406\u306e\u6700\u9069\u5316<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class BatchProcessor {\n    \/\/ \u30d1\u30e9\u30ec\u30eb\u51e6\u7406\u306e\u5b9f\u88c5\n    public void processBatch(List&lt;Task&gt; tasks) {\n        int threads = Runtime.getRuntime().availableProcessors();\n        ExecutorService executor = Executors.newFixedThreadPool(threads);\n\n        try {\n            List&lt;Future&lt;?&gt;&gt; futures = tasks.stream()\n                .map(task -&gt; executor.submit(() -&gt; processTask(task)))\n                .collect(Collectors.toList());\n\n            \/\/ \u5b8c\u4e86\u5f85\u3061\n            for (Future&lt;?&gt; future : futures) {\n                try {\n                    future.get(1, TimeUnit.MINUTES);\n                } catch (TimeoutException e) {\n                    \/\/ \u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u51e6\u7406\n                }\n            }\n        } finally {\n            executor.shutdown();\n        }\n    }\n\n    private void processTask(Task task) {\n        \/\/ \u30bf\u30b9\u30af\u51e6\u7406\u306e\u5b9f\u88c5\n    }\n}<\/pre>\n\n\n\n<p class=\"is-style-sango-paragraph-idea-alt\"><strong>\u5b9f\u88c5\u52b9\u679c\u306e\u6bd4\u8f03\uff1a<\/strong><\/p>\n\n\n<div id=\"id-e57fb9b9-c41c-413d-8540-bb64758ac679\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u51e6\u7406\u5185\u5bb9<\/th><th>\u5f93\u6765\u306e\u5b9f\u88c5\u6642\u9593<\/th><th>Commons\u4f7f\u7528\u6642\u306e\u5b9f\u88c5\u6642\u9593<\/th><th>\u6027\u80fd\u6539\u5584\u7387<\/th><\/tr><\/thead><tbody><tr><td>\u30c7\u30fc\u30bf\u5909\u63db<\/td><td>3-4\u6642\u9593<\/td><td>1-2\u6642\u9593<\/td><td>\u7d0450%<\/td><\/tr><tr><td>\u65e5\u4ed8\u51e6\u7406<\/td><td>2-3\u6642\u9593<\/td><td>0.5-1\u6642\u9593<\/td><td>\u7d0470%<\/td><\/tr><tr><td>\u4e26\u884c\u51e6\u7406<\/td><td>4-5\u6642\u9593<\/td><td>2-3\u6642\u9593<\/td><td>\u7d0440%<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p class=\"is-style-sango-paragraph-memo-alt\"><strong>\u6d3b\u7528\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30c7\u30fc\u30bf\u5909\u63db\u6642\u306f\u9069\u5207\u306a\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u306e\u7d44\u307f\u5408\u308f\u305b\u3092\u8003\u616e<\/li>\n\n\n\n<li>\u65e5\u4ed8\u51e6\u7406\u3067\u306f\u6642\u9593\u5e2f\u3084\u30ed\u30b1\u30fc\u30eb\u3092\u610f\u8b58\u3057\u305f\u5b9f\u88c5<\/li>\n\n\n\n<li>\u4e26\u884c\u51e6\u7406\u3067\u306f\u9069\u5207\u306a\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u3068\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406\u3092\u5b9f\u65bd<\/li>\n\n\n\n<li>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u30d0\u30e9\u30f3\u30b9\u3092\u8003\u616e<\/li>\n<\/ol>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u9069\u5207\u306b\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u958b\u767a\u52b9\u7387\u3068\u5b9f\u884c\u6027\u80fd\u306e\u4e21\u65b9\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u5b9f\u88c5\u306b\u304a\u3051\u308b\u4e00\u822c\u7684\u306a\u554f\u984c\u3068\u305d\u306e\u89e3\u6c7a\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-15\">Apache Commons\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-16\">\u3088\u304f\u3042\u308b\u5b9f\u88c5\u30df\u30b9\u3068\u305d\u306e\u5bfe\u51e6\u6cd5<\/h3>\n\n\n\n<p>Apache Commons\u3092\u4f7f\u7528\u3059\u308b\u969b\u306b\u3088\u304f\u906d\u9047\u3059\u308b\u554f\u984c\u3068\u305d\u306e\u89e3\u6c7a\u65b9\u6cd5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u95a2\u9023\u306e\u554f\u984c<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u554f\u984c\u306e\u3042\u308b\u30b3\u30fc\u30c9\npublic class ResourceManager {\n    private static final Map&lt;String, byte[]&gt; cache = new HashMap&lt;&gt;();\n\n    public void processLargeFile(String path) {\n        \/\/ \u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u306e\u53ef\u80fd\u6027\u3042\u308a\n        byte[] content = FileUtils.readFileToByteArray(new File(path));\n        cache.put(path, content);  \/\/ \u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u969b\u9650\u306a\u304f\u5897\u52a0\n    }\n}\n\n\/\/ \u6539\u5584\u5f8c\u306e\u30b3\u30fc\u30c9\npublic class ResourceManager {\n    private static final Map&lt;String, SoftReference&lt;byte[]&gt;&gt; cache = new HashMap&lt;&gt;();\n\n    public void processLargeFile(String path) {\n        \/\/ SoftReference\u3092\u4f7f\u7528\u3057\u3066\u30e1\u30e2\u30ea\u7ba1\u7406\u3092\u6539\u5584\n        byte[] content = FileUtils.readFileToByteArray(new File(path));\n        cache.put(path, new SoftReference&lt;&gt;(content));\n\n        \/\/ \u5b9a\u671f\u7684\u306a\u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7\n        cleanupCache();\n    }\n\n    private void cleanupCache() {\n        cache.entrySet().removeIf(entry -&gt; \n            entry.getValue().get() == null);\n    }\n}<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u4f8b\u5916\u51e6\u7406\u306e\u8aa4\u308a<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u554f\u984c\u306e\u3042\u308b\u30b3\u30fc\u30c9\ntry {\n    BeanUtils.copyProperties(target, source);\n} catch (Exception e) {\n    \/\/ \u4e00\u822c\u7684\u306a\u4f8b\u5916\u3092\u30ad\u30e3\u30c3\u30c1\u3057\u3059\u304e\n    logger.error(\"\u30a8\u30e9\u30fc\u767a\u751f\", e);\n}\n\n\/\/ \u6539\u5584\u5f8c\u306e\u30b3\u30fc\u30c9\ntry {\n    BeanUtils.copyProperties(target, source);\n} catch (IllegalAccessException e) {\n    logger.error(\"\u30d7\u30ed\u30d1\u30c6\u30a3\u30a2\u30af\u30bb\u30b9\u30a8\u30e9\u30fc: {}\", e.getMessage());\n    throw new DataConversionException(\"\u30d7\u30ed\u30d1\u30c6\u30a3\u30b3\u30d4\u30fc\u5931\u6557\", e);\n} catch (InvocationTargetException e) {\n    logger.error(\"\u30e1\u30bd\u30c3\u30c9\u547c\u3073\u51fa\u3057\u30a8\u30e9\u30fc: {}\", e.getMessage());\n    throw new DataConversionException(\"\u30d7\u30ed\u30d1\u30c6\u30a3\u30b3\u30d4\u30fc\u5931\u6557\", e);\n}<\/pre>\n\n\n\n<p class=\"is-style-sango-paragraph-memo-alt\"><strong>\u3088\u304f\u3042\u308b\u554f\u984c\u3068\u5bfe\u51e6\u6cd5\u306e\u4e00\u89a7\uff1a<\/strong><\/p>\n\n\n<div id=\"id-bff58bea-8ae2-4e8f-b7d0-22edaf27292c\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u554f\u984c<\/th><th>\u539f\u56e0<\/th><th>\u5bfe\u51e6\u6cd5<\/th><\/tr><\/thead><tbody><tr><td>\u30e1\u30e2\u30ea\u30ea\u30fc\u30af<\/td><td>\u30ea\u30bd\u30fc\u30b9\u306e\u89e3\u653e\u5fd8\u308c<\/td><td>try-with-resources\u306e\u4f7f\u7528<\/td><\/tr><tr><td>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u4f4e\u4e0b<\/td><td>\u4e0d\u9069\u5207\u306a\u30ad\u30e3\u30c3\u30b7\u30e5\u5229\u7528<\/td><td>\u30ad\u30e3\u30c3\u30b7\u30e5\u6226\u7565\u306e\u898b\u76f4\u3057<\/td><\/tr><tr><td>\u4f8b\u5916\u306e\u8aa4\u51e6\u7406<\/td><td>\u904e\u5ea6\u306b\u5e83\u3044\u4f8b\u5916\u6355\u6349<\/td><td>\u5177\u4f53\u7684\u306a\u4f8b\u5916\u51e6\u7406\u306e\u5b9f\u88c5<\/td><\/tr><tr><td>\u4e26\u884c\u51e6\u7406\u306e\u554f\u984c<\/td><td>\u30b9\u30ec\u30c3\u30c9\u30bb\u30fc\u30d5\u3067\u306a\u3044\u4f7f\u7528<\/td><td>\u30b9\u30ec\u30c3\u30c9\u30bb\u30fc\u30d5\u306a\u5b9f\u88c5\u3078\u306e\u4fee\u6b63<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\" id=\"i-17\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u30dd\u30a4\u30f3\u30c8<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30ad\u30e3\u30c3\u30b7\u30e5\u6226\u7565\u306e\u6700\u9069\u5316<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class OptimizedCache {\n    private static final LoadingCache&lt;String, Object&gt; cache = CacheBuilder.newBuilder()\n        .maximumSize(1000)                \/\/ \u30ad\u30e3\u30c3\u30b7\u30e5\u30b5\u30a4\u30ba\u306e\u5236\u9650\n        .expireAfterWrite(1, TimeUnit.HOURS)  \/\/ \u6709\u52b9\u671f\u9650\u306e\u8a2d\u5b9a\n        .build(new CacheLoader&lt;String, Object&gt;() {\n            @Override\n            public Object load(String key) {\n                return loadData(key);  \/\/ \u30c7\u30fc\u30bf\u53d6\u5f97\u51e6\u7406\n            }\n        });\n\n    private static Object loadData(String key) {\n        \/\/ \u5b9f\u969b\u306e\u30c7\u30fc\u30bf\u53d6\u5f97\u30ed\u30b8\u30c3\u30af\n        return null;\n    }\n}<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30d0\u30c3\u30c1\u51e6\u7406\u306e\u6700\u9069\u5316<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class BatchOptimizer {\n    private static final int BATCH_SIZE = 1000;\n\n    public void processList(List&lt;String&gt; items) {\n        \/\/ \u30d0\u30c3\u30c1\u30b5\u30a4\u30ba\u3067\u306e\u5206\u5272\u51e6\u7406\n        Lists.partition(items, BATCH_SIZE)\n            .parallelStream()  \/\/ \u4e26\u5217\u51e6\u7406\u306e\u6d3b\u7528\n            .forEach(this::processBatch);\n    }\n\n    private void processBatch(List&lt;String&gt; batch) {\n        \/\/ \u30d0\u30c3\u30c1\u51e6\u7406\u306e\u5b9f\u88c5\n    }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-18\">\u30d0\u30fc\u30b8\u30e7\u30f3\u9593\u306e\u975e\u4e92\u63db\u6027\u3078\u306e\u5bfe\u5fdc<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30d0\u30fc\u30b8\u30e7\u30f3\u79fb\u884c\u6642\u306e\u6ce8\u610f\u70b9<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u65e7\u30d0\u30fc\u30b8\u30e7\u30f3\uff08Commons Collections 3.x\uff09\npublic class LegacyCode {\n    public void oldMethod() {\n        \/\/ \u975e\u63a8\u5968\u3068\u306a\u3063\u305f\u6a5f\u80fd\u306e\u4f7f\u7528\n        CollectionUtils.transform(collection, transformer);\n    }\n}\n\n\/\/ \u65b0\u30d0\u30fc\u30b8\u30e7\u30f3\uff08Commons Collections 4.x\uff09\npublic class ModernCode {\n    public void newMethod() {\n        \/\/ \u65b0\u3057\u3044API\u4f7f\u7528\n        collection.stream()\n            .map(transformer::transform)\n            .collect(Collectors.toList());\n    }\n}<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30d0\u30fc\u30b8\u30e7\u30f3\u4e92\u63db\u6027\u306e\u78ba\u4fdd<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class VersionCompatibility {\n    \/\/ \u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u4f9d\u5b58\u3057\u306a\u3044\u5b9f\u88c5\n    public static &lt;T&gt; List&lt;T&gt; safeTransform(\n            Collection&lt;T&gt; collection,\n            Function&lt;T, T&gt; transformer) {\n        if (isLegacyVersion()) {\n            return legacyTransform(collection, transformer);\n        }\n        return modernTransform(collection, transformer);\n    }\n\n    private static boolean isLegacyVersion() {\n        \/\/ \u30d0\u30fc\u30b8\u30e7\u30f3\u5224\u5b9a\u30ed\u30b8\u30c3\u30af\n        return false;\n    }\n}<\/pre>\n\n\n\n<p class=\"is-style-sango-paragraph-exclamation-alt\"><strong>\u4e3b\u8981\u306a\u30d0\u30fc\u30b8\u30e7\u30f3\u9593\u306e\u5909\u66f4\u70b9\uff1a<\/strong><\/p>\n\n\n<div id=\"id-f55cdb93-fd2e-44ba-be44-f44b70fca91e\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8<\/th><th>\u65e7\u30d0\u30fc\u30b8\u30e7\u30f3<\/th><th>\u65b0\u30d0\u30fc\u30b8\u30e7\u30f3<\/th><th>\u4e3b\u306a\u5909\u66f4\u70b9<\/th><\/tr><\/thead><tbody><tr><td>Commons Lang<\/td><td>2.x<\/td><td>3.x<\/td><td>StringUtils API\u306e\u5909\u66f4<\/td><\/tr><tr><td>Collections<\/td><td>3.x<\/td><td>4.x<\/td><td>Generics\u5bfe\u5fdc\u306e\u5f37\u5316<\/td><\/tr><tr><td>IO<\/td><td>1.x<\/td><td>2.x<\/td><td>\u30b9\u30c8\u30ea\u30fc\u30e0\u51e6\u7406\u306e\u6539\u5584<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p class=\"is-style-sango-paragraph-memo-alt\"><strong>\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u958b\u767a\u521d\u671f\u6bb5\u968e\u3067\u306e\u5bfe\u7b56\n<ul class=\"wp-block-list\">\n<li>\u9069\u5207\u306a\u30d0\u30fc\u30b8\u30e7\u30f3\u9078\u5b9a<\/li>\n\n\n\n<li>\u4e92\u63db\u6027\u306e\u4e8b\u524d\u78ba\u8a8d<\/li>\n\n\n\n<li>\u30c6\u30b9\u30c8\u74b0\u5883\u306e\u6574\u5099<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u904b\u7528\u6bb5\u968e\u3067\u306e\u5bfe\u7b56\n<ul class=\"wp-block-list\">\n<li>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0<\/li>\n\n\n\n<li>\u30ed\u30b0\u51fa\u529b\u306e\u5145\u5b9f<\/li>\n\n\n\n<li>\u5b9a\u671f\u7684\u306a\u30d0\u30fc\u30b8\u30e7\u30f3\u66f4\u65b0<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u554f\u984c\u767a\u751f\u6642\u306e\u5bfe\u5fdc\n<ul class=\"wp-block-list\">\n<li>\u30a8\u30e9\u30fc\u30ed\u30b0\u306e\u8a73\u7d30\u5206\u6790<\/li>\n\n\n\n<li>\u5207\u308a\u5206\u3051\u624b\u9806\u306e\u6a19\u6e96\u5316<\/li>\n\n\n\n<li>\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u6a5f\u80fd\u306e\u5b9f\u88c5<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u77e5\u8b58\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001Apache Commons\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e\u554f\u984c\u3092\u52b9\u679c\u7684\u306b\u9632\u6b62\u30fb\u89e3\u6c7a\u3067\u304d\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306e\u5c0e\u5165\u4e8b\u4f8b\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-19\">Apache Commons\u3092\u4f7f\u3063\u305f\u958b\u767a\u52b9\u7387\u5316\u306e\u5b9f\u8df5\u4f8b<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-20\">\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306e\u5c0e\u5165\u4e8b\u4f8b<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5927\u898f\u6a21EC\u30b5\u30a4\u30c8\u3067\u306e\u6d3b\u7528\u4e8b\u4f8b<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5c0e\u5165\u524d\u306e\u30b3\u30fc\u30c9\npublic class LegacyOrderProcessor {\n    public void processOrder(Order order) {\n        \/\/ \u8907\u96d1\u306a\u6587\u5b57\u5217\u51e6\u7406\n        if (order.getCustomerName() != null) {\n            String name = order.getCustomerName().trim();\n            if (!name.isEmpty()) {\n                \/\/ \u51e6\u7406\u7d9a\u884c\n            }\n        }\n\n        \/\/ \u65e5\u4ed8\u30c1\u30a7\u30c3\u30af\n        Date orderDate = order.getOrderDate();\n        if (orderDate != null) {\n            Calendar cal = Calendar.getInstance();\n            cal.setTime(orderDate);\n            \/\/ \u8907\u96d1\u306a\u65e5\u4ed8\u8a08\u7b97\n        }\n    }\n}\n\n\/\/ Apache Commons\u5c0e\u5165\u5f8c\u306e\u30b3\u30fc\u30c9\npublic class ModernOrderProcessor {\n    public void processOrder(Order order) {\n        \/\/ \u7c21\u6f54\u306a\u6587\u5b57\u5217\u51e6\u7406\n        if (StringUtils.isNotBlank(order.getCustomerName())) {\n            \/\/ \u51e6\u7406\u7d9a\u884c\n        }\n\n        \/\/ \u7c21\u6f54\u306a\u65e5\u4ed8\u51e6\u7406\n        Date orderDate = order.getOrderDate();\n        if (orderDate != null) {\n            Date deliveryDate = DateUtils.addBusinessDays(orderDate, 3);\n            order.setExpectedDeliveryDate(deliveryDate);\n        }\n    }\n}<\/pre>\n\n\n\n<p class=\"is-style-sango-paragraph-idea-alt\"><strong>\u5c0e\u5165\u52b9\u679c\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b3\u30fc\u30c9\u884c\u6570\uff1a40%\u524a\u6e1b<\/li>\n\n\n\n<li>\u30d0\u30b0\u4fee\u6b63\u6642\u9593\uff1a60%\u524a\u6e1b<\/li>\n\n\n\n<li>\u958b\u767a\u751f\u7523\u6027\uff1a50%\u5411\u4e0a<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u91d1\u878d\u30b7\u30b9\u30c6\u30e0\u3067\u306e\u30d0\u30c3\u30c1\u51e6\u7406\u6539\u5584\u4e8b\u4f8b<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class TransactionProcessor {\n    private static final int BATCH_SIZE = 1000;\n\n    \/\/ \u5927\u91cf\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u51e6\u7406\u306e\u6700\u9069\u5316\n    public void processTransactions(List&lt;Transaction&gt; transactions) {\n        \/\/ \u30d0\u30c3\u30c1\u51e6\u7406\u306e\u52b9\u7387\u5316\n        Lists.partition(transactions, BATCH_SIZE)\n            .forEach(batch -&gt; {\n                try {\n                    processBatchWithRetry(batch);\n                } catch (Exception e) {\n                    handleBatchError(batch, e);\n                }\n            });\n    }\n\n    private void processBatchWithRetry(List&lt;Transaction&gt; batch) {\n        \/\/ \u518d\u8a66\u884c\u30ed\u30b8\u30c3\u30af\u306e\u5b9f\u88c5\n        RetryTemplate.builder()\n            .withMaxAttempts(3)\n            .withBackoff(100, 2000)  \/\/ 100ms\uff5e2000ms\u306e\u7bc4\u56f2\u3067\u518d\u8a66\u884c\n            .build()\n            .execute(() -&gt; processOneBatch(batch));\n    }\n}<\/pre>\n\n\n\n<p class=\"is-style-sango-paragraph-idea-alt\"><strong>\u5b9f\u88c5\u52b9\u679c\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u51e6\u7406\u901f\u5ea6\uff1a3\u500d\u5411\u4e0a<\/li>\n\n\n\n<li>\u30a8\u30e9\u30fc\u7387\uff1a80%\u524a\u6e1b<\/li>\n\n\n\n<li>\u30b7\u30b9\u30c6\u30e0\u5b89\u5b9a\u6027\uff1a\u5927\u5e45\u5411\u4e0a<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-21\">\u5c0e\u5165\u306b\u3088\u308b\u958b\u767a\u5de5\u6570\u524a\u6e1b\u306e\u5177\u4f53\u4f8b<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Web API\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306e\u5de5\u6570\u524a\u6e1b<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u52b9\u7387\u7684\u306aAPI\u30ec\u30b9\u30dd\u30f3\u30b9\u51e6\u7406\npublic class APIResponseHandler {\n    public ResponseEntity&lt;String&gt; handleResponse(APIResponse response) {\n        \/\/ \u52b9\u7387\u7684\u306aJSON\u30c7\u30fc\u30bf\u51e6\u7406\n        String jsonString = new JSONObject()\n            .put(\"status\", response.getStatus())\n            .put(\"data\", response.getData())\n            .toString();\n\n        \/\/ \u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\n        Validate.notNull(response.getData(), \"\u30c7\u30fc\u30bf\u304c\u5b58\u5728\u3057\u307e\u305b\u3093\");\n\n        return ResponseEntity.ok()\n            .contentType(MediaType.APPLICATION_JSON)\n            .body(jsonString);\n    }\n}<\/pre>\n\n\n\n<p class=\"is-style-sango-paragraph-idea-alt\"><strong>\u5de5\u6570\u524a\u6e1b\u52b9\u679c\uff1a<\/strong><\/p>\n\n\n<div id=\"id-4233eafb-5dfa-41ce-b689-e5ff716e0d7b\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u958b\u767a\u30d5\u30a7\u30fc\u30ba<\/th><th>\u5f93\u6765\u306e\u5de5\u6570<\/th><th>\u5c0e\u5165\u5f8c\u306e\u5de5\u6570<\/th><th>\u524a\u6e1b\u7387<\/th><\/tr><\/thead><tbody><tr><td>\u8a2d\u8a08<\/td><td>20\u4eba\u65e5<\/td><td>15\u4eba\u65e5<\/td><td>25%<\/td><\/tr><tr><td>\u5b9f\u88c5<\/td><td>40\u4eba\u65e5<\/td><td>20\u4eba\u65e5<\/td><td>50%<\/td><\/tr><tr><td>\u30c6\u30b9\u30c8<\/td><td>30\u4eba\u65e5<\/td><td>15\u4eba\u65e5<\/td><td>50%<\/td><\/tr><tr><td>\u30d0\u30b0\u4fee\u6b63<\/td><td>15\u4eba\u65e5<\/td><td>5\u4eba\u65e5<\/td><td>67%<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30ec\u30ac\u30b7\u30fc\u30b7\u30b9\u30c6\u30e0\u6539\u4fee\u3067\u306e\u6d3b\u7528<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class ModernizationExample {\n    \/\/ \u30ec\u30ac\u30b7\u30fc\u30b3\u30fc\u30c9\u306e\u6700\u9069\u5316\n    public class DataMigrator {\n        public void migrateData(List&lt;LegacyData&gt; legacyDataList) {\n            \/\/ \u4e26\u5217\u51e6\u7406\u306b\u3088\u308b\u9ad8\u901f\u5316\n            legacyDataList.parallelStream()\n                .map(this::convertToNewFormat)\n                .forEach(this::saveToNewSystem);\n        }\n\n        private NewData convertToNewFormat(LegacyData legacyData) {\n            NewData newData = new NewData();\n            \/\/ BeanUtils\u306b\u3088\u308b\u52b9\u7387\u7684\u306a\u30d7\u30ed\u30d1\u30c6\u30a3\u30b3\u30d4\u30fc\n            try {\n                BeanUtils.copyProperties(newData, legacyData);\n            } catch (Exception e) {\n                handleConversionError(legacyData, e);\n            }\n            return newData;\n        }\n    }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-22\">\u4eca\u5f8c\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u30a2\u30c3\u30d7\u306b\u5099\u3048\u305f\u8a2d\u8a08\u65b9\u91dd<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30e2\u30b8\u30e5\u30fc\u30eb\u5316\u306b\u3088\u308b\u4f9d\u5b58\u95a2\u4fc2\u306e\u7ba1\u7406<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class CommonsWrapper {\n    \/\/ \u30d0\u30fc\u30b8\u30e7\u30f3\u9593\u306e\u4e92\u63db\u6027\u3092\u4fdd\u3064\u30e9\u30c3\u30d1\u30fc\n    private static class StringProcessor {\n        public static String process(String input) {\n            try {\n                \/\/ \u65b0\u30d0\u30fc\u30b8\u30e7\u30f3\u306e\u30e1\u30bd\u30c3\u30c9\u547c\u3073\u51fa\u3057\n                return StringUtils.defaultString(input).trim();\n            } catch (NoSuchMethodError e) {\n                \/\/ \u65e7\u30d0\u30fc\u30b8\u30e7\u30f3\u7528\u306e\u4ee3\u66ff\u51e6\u7406\n                return fallbackStringProcess(input);\n            }\n        }\n    }\n}<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u5c06\u6765\u306e\u62e1\u5f35\u6027\u3092\u8003\u616e\u3057\u305f\u8a2d\u8a08<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class ExtensibleProcessor {\n    \/\/ \u62e1\u5f35\u53ef\u80fd\u306a\u51e6\u7406\u30af\u30e9\u30b9\n    private final Map&lt;String, Processor&gt; processors = new HashMap&lt;&gt;();\n\n    public void registerProcessor(String type, Processor processor) {\n        processors.put(type, processor);\n    }\n\n    public void process(String type, Data data) {\n        Processor processor = processors.getOrDefault(\n            type,\n            new DefaultProcessor()  \/\/ \u30c7\u30d5\u30a9\u30eb\u30c8\u51e6\u7406\n        );\n        processor.process(data);\n    }\n}<\/pre>\n\n\n\n<p class=\"is-style-sango-paragraph-memo-alt\"><strong>\u8a2d\u8a08\u65b9\u91dd\u306e\u30dd\u30a4\u30f3\u30c8\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30d0\u30fc\u30b8\u30e7\u30f3\u4e92\u63db\u6027\u306e\u7dad\u6301\n<ul class=\"wp-block-list\">\n<li>\u62bd\u8c61\u5316\u30ec\u30a4\u30e4\u30fc\u306e\u5c0e\u5165<\/li>\n\n\n\n<li>\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u6a5f\u80fd\u306e\u5b9f\u88c5<\/li>\n\n\n\n<li>\u6bb5\u968e\u7684\u306a\u79fb\u884c\u8a08\u753b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u4fdd\u5b88\u6027\u306e\u5411\u4e0a\n<ul class=\"wp-block-list\">\n<li>\u30e2\u30b8\u30e5\u30fc\u30eb\u9593\u306e\u758e\u7d50\u5408\u7dad\u6301<\/li>\n\n\n\n<li>\u30c6\u30b9\u30c8\u306e\u81ea\u52d5\u5316<\/li>\n\n\n\n<li>\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306e\u6574\u5099<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\u5316\n<ul class=\"wp-block-list\">\n<li>\u5b9a\u671f\u7684\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u8a08\u6e2c<\/li>\n\n\n\n<li>\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u306e\u7279\u5b9a\u3068\u5bfe\u7b56<\/li>\n\n\n\n<li>\u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3\u306e\u78ba\u4fdd<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p class=\"is-style-sango-paragraph-idea-alt\"><strong>\u5c0e\u5165\u52b9\u679c\u306e\u307e\u3068\u3081\uff1a<\/strong><\/p>\n\n\n<div id=\"id-a83dd999-6dda-45e5-81e3-7b2720a06815\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u9805\u76ee<\/th><th>\u6539\u5584\u52b9\u679c<\/th><\/tr><\/thead><tbody><tr><td>\u958b\u767a\u751f\u7523\u6027<\/td><td>\u5e73\u574750%\u5411\u4e0a<\/td><\/tr><tr><td>\u30b3\u30fc\u30c9\u54c1\u8cea<\/td><td>\u30d0\u30b070%\u524a\u6e1b<\/td><\/tr><tr><td>\u4fdd\u5b88\u6027<\/td><td>\u5de5\u657040%\u524a\u6e1b<\/td><\/tr><tr><td>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/td><td>\u51e6\u7406\u901f\u5ea62-3\u500d\u5411\u4e0a<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u3053\u308c\u3089\u306e\u5b9f\u8df5\u4f8b\u3068\u65b9\u91dd\u3092\u53c2\u8003\u306b\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u9069\u5207\u306aApache Commons\u306e\u6d3b\u7528\u65b9\u6cd5\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u3067\u3001\u958b\u767a\u52b9\u7387\u3068\u54c1\u8cea\u306e\u4e21\u9762\u3067\u5927\u304d\u306a\u6539\u5584\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-23\">\u307e\u3068\u3081\uff1aApache Commons\u3067\u5b9f\u73fe\u3059\u308b\u52b9\u7387\u7684\u306a\u958b\u767a<\/h2>\n\n\n\n<p>\u672c\u8a18\u4e8b\u3067\u306f\u3001Apache Commons\u3092\u6d3b\u7528\u3057\u305f\u958b\u767a\u52b9\u7387\u5316\u306b\u3064\u3044\u3066\u3001\u5b9f\u8df5\u7684\u306a\u8996\u70b9\u304b\u3089\u89e3\u8aac\u3057\u3066\u304d\u307e\u3057\u305f\u3002\u3053\u3053\u3067\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u3092\u6574\u7406\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-24\">\u958b\u767a\u52b9\u7387\u5316\u306e\u30ad\u30fc\u30dd\u30a4\u30f3\u30c8<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u57fa\u672c\u6a5f\u80fd\u306e\u52b9\u679c\u7684\u306a\u6d3b\u7528<\/strong>\n<ul class=\"wp-block-list\">\n<li>StringUtils\u3001CollectionUtils\u3001FileUtils\u306a\u3069\u306e\u57fa\u672c\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u306e\u9069\u5207\u306a\u4f7f\u7528<\/li>\n\n\n\n<li>null\u5b89\u5168\u306a\u51e6\u7406\u306e\u5b9f\u88c5<\/li>\n\n\n\n<li>\u30dc\u30a4\u30e9\u30fc\u30d7\u30ec\u30fc\u30c8\u30b3\u30fc\u30c9\u306e\u524a\u6e1b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u30b3\u30fc\u30c9\u54c1\u8cea\u306e\u5411\u4e0a<\/strong>\n<ul class=\"wp-block-list\">\n<li>ValidationUtils\u306b\u3088\u308b\u5805\u7262\u306a\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3<\/li>\n\n\n\n<li>ObjectUtils\u306b\u3088\u308bNullPointerException\u5bfe\u7b56<\/li>\n\n\n\n<li>\u4f8b\u5916\u51e6\u7406\u306e\u6a19\u6e96\u5316<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u5b9f\u8df5\u7684\u306a\u6d3b\u7528\u30d1\u30bf\u30fc\u30f3<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u30c7\u30fc\u30bf\u5909\u63db\u51e6\u7406\u306e\u52b9\u7387\u5316<\/li>\n\n\n\n<li>\u65e5\u4ed8\u51e6\u7406\u306e\u7c21\u7565\u5316<\/li>\n\n\n\n<li>\u4e26\u884c\u51e6\u7406\u306e\u6700\u9069\u5316<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-25\">\u5c0e\u5165\u52b9\u679c\u306e\u307e\u3068\u3081<\/h3>\n\n\n<div id=\"id-5bf55224-35b5-477c-86dd-b674cbe353a0\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u9805\u76ee<\/th><th>\u52b9\u679c<\/th><th>\u5177\u4f53\u7684\u306a\u6539\u5584\u70b9<\/th><\/tr><\/thead><tbody><tr><td>\u958b\u767a\u901f\u5ea6<\/td><td>\u7d0450%\u5411\u4e0a<\/td><td>\u30fb\u30dc\u30a4\u30e9\u30fc\u30d7\u30ec\u30fc\u30c8\u30b3\u30fc\u30c9\u306e\u524a\u6e1b<br>\u30fb\u6a19\u6e96\u5316\u3055\u308c\u305f\u5b9f\u88c5\u65b9\u6cd5\u306e\u78ba\u7acb<\/td><\/tr><tr><td>\u30b3\u30fc\u30c9\u54c1\u8cea<\/td><td>\u7d0470%\u6539\u5584<\/td><td>\u30fb\u30d0\u30b0\u306e\u524a\u6e1b<br>\u30fb\u4fdd\u5b88\u6027\u306e\u5411\u4e0a<\/td><\/tr><tr><td>\u904b\u7528\u52b9\u7387<\/td><td>\u7d0440%\u5411\u4e0a<\/td><td>\u30fb\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u52b9\u7387\u5316<br>\u30fb\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6539\u5584<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\" id=\"i-26\">\u4eca\u5f8c\u306e\u5c55\u671b<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u7d99\u7d9a\u7684\u306a\u6539\u5584<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u5b9a\u671f\u7684\u306a\u30d0\u30fc\u30b8\u30e7\u30f3\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8<\/li>\n\n\n\n<li>\u65b0\u6a5f\u80fd\u306e\u7a4d\u6975\u7684\u306a\u6d3b\u7528<\/li>\n\n\n\n<li>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u7d99\u7d9a\u7684\u306a\u6700\u9069\u5316<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u30c1\u30fc\u30e0\u958b\u767a\u3067\u306e\u6d3b\u7528<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u5171\u901a\u30e9\u30a4\u30d6\u30e9\u30ea\u3068\u3057\u3066\u306e\u6a19\u6e96\u5316<\/li>\n\n\n\n<li>\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u306e\u78ba\u7acb<\/li>\n\n\n\n<li>\u77e5\u898b\u306e\u5171\u6709\u3068\u84c4\u7a4d<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-27\">\u5b9f\u8df5\u306e\u305f\u3081\u306e\u30ed\u30fc\u30c9\u30de\u30c3\u30d7<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5c0e\u5165\u30d5\u30a7\u30fc\u30ba<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u8981\u4ef6\u5206\u6790<\/li>\n\n\n\n<li>\u5fc5\u8981\u306a\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u9078\u5b9a<\/li>\n\n\n\n<li>\u6bb5\u968e\u7684\u306a\u5c0e\u5165\u8a08\u753b\u306e\u7b56\u5b9a<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u6700\u9069\u5316\u30d5\u30a7\u30fc\u30ba<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6e2c\u5b9a\u3068\u6539\u5584<\/li>\n\n\n\n<li>\u30b3\u30fc\u30c9\u54c1\u8cea\u306e\u5411\u4e0a<\/li>\n\n\n\n<li>\u30c1\u30fc\u30e0\u5185\u3067\u306e\u77e5\u898b\u5171\u6709<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u767a\u5c55\u30d5\u30a7\u30fc\u30ba<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u72ec\u81ea\u306e\u62e1\u5f35\u6a5f\u80fd\u306e\u958b\u767a<\/li>\n\n\n\n<li>\u81ea\u52d5\u5316\u306e\u4fc3\u9032<\/li>\n\n\n\n<li>\u7d99\u7d9a\u7684\u306a\u6539\u5584\u30b5\u30a4\u30af\u30eb\u306e\u78ba\u7acb<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>Apache Commons\u306f\u3001\u305d\u306e\u8c4a\u5bcc\u306a\u6a5f\u80fd\u3068\u9ad8\u3044\u4fe1\u983c\u6027\u306b\u3088\u308a\u3001Java\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u958b\u767a\u52b9\u7387\u3092\u5927\u304d\u304f\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u672c\u8a18\u4e8b\u3067\u7d39\u4ecb\u3057\u305f\u5b9f\u8df5\u4f8b\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u53c2\u8003\u306b\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u9069\u5207\u306b\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u52b9\u7387\u7684\u3067\u54c1\u8cea\u306e\u9ad8\u3044\u958b\u767a\u3092\u5b9f\u73fe\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u7d9a\u3051\u3066\u5b66\u7fd2\u3092\u6df1\u3081\u305f\u3044\u65b9\u306e\u305f\u3081\u306b\u3001\u4ee5\u4e0b\u306e\u30b9\u30c6\u30c3\u30d7\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306e\u53c2\u7167<\/li>\n\n\n\n<li>\u30b5\u30f3\u30d7\u30eb\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306e\u5b9f\u8df5<\/li>\n\n\n\n<li>\u30c1\u30fc\u30e0\u5185\u3067\u306e\u77e5\u898b\u5171\u6709<\/li>\n\n\n\n<li>\u7d99\u7d9a\u7684\u306a\u5b66\u7fd2\u3068\u6539\u5584<\/li>\n<\/ol>\n\n\n\n<p>Apache Commons\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u958b\u767a\u8005\u306f\u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af\u306e\u5b9f\u88c5\u306b\u3088\u308a\u591a\u304f\u306e\u6642\u9593\u3092\u5272\u304f\u3053\u3068\u304c\u3067\u304d\u3001\u7d50\u679c\u3068\u3057\u3066\u3088\u308a\u4fa1\u5024\u306e\u9ad8\u3044\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3092\u52b9\u7387\u7684\u306b\u958b\u767a\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3068\u306a\u308a\u307e\u3059\u3002<\/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":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-736","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-uncategorized","7":"nothumb"},"_links":{"self":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/736","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=736"}],"version-history":[{"count":1,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/736\/revisions"}],"predecessor-version":[{"id":738,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/736\/revisions\/738"}],"wp:attachment":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=736"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=736"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=736"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}