{"id":136,"date":"2023-10-07T00:36:36","date_gmt":"2023-05-16T14:57:11","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/index.php\/2023\/11\/30\/java%e3%81%a7%e6%9d%a1%e4%bb%b6%e6%96%87%e3%82%92%e6%9b%b8%e3%81%8f%e6%96%b9%e6%b3%95\/"},"modified":"2025-07-31T21:03:31","modified_gmt":"2025-07-31T12:03:31","slug":"java%e3%81%a7%e6%9d%a1%e4%bb%b6%e6%96%87%e3%82%92%e6%9b%b8%e3%81%8f%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e6%9d%a1%e4%bb%b6%e6%96%87%e3%82%92%e6%9b%b8%e3%81%8f%e6%96%b9%e6%b3%95\/","title":{"rendered":"Java\u3067\u6761\u4ef6\u6587\u3092\u66f8\u304f\u65b9\u6cd5"},"content":{"rendered":"<p>\u8457\u8005\u306f\u3001\u66f8\u304f\u3053\u3068\u3067\u5bc4\u4ed8\u91d1\u3092\u96c6\u3081\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u4e00\u74b0\u3068\u3057\u3066\u3001\u30d5\u30ea\u30fc\uff06\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u57fa\u91d1\u306b\u5bc4\u4ed8\u3059\u308b\u3053\u3068\u3092\u9078\u3073\u307e\u3057\u305f\u3002<\/p>\n<h3>\u306f\u3058\u3081\u306b<\/h3>\n<p>\u6761\u4ef6\u6587\u306f\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u6d41\u308c\u3092\u5909\u3048\u307e\u3059\u3002\u6761\u4ef6\u6587\u306f\u5206\u5c90\u6587\u3068\u3082\u547c\u3070\u308c\u307e\u3059\u3002\u6761\u4ef6\u304c\u4e00\u81f4\u3059\u308b\u3068\u3001\u30b3\u30fc\u30c9\u306e\u4e2d\u306e\u4e00\u3064\u306e\u679d\u306b\u6d41\u308c\u304c\u9032\u307f\u307e\u3059\u3002\u6761\u4ef6\u304c\u6e80\u305f\u3055\u308c\u306a\u3044\u5834\u5408\u306f\u3001\u5225\u306e\u6761\u4ef6\u304c\u8a55\u4fa1\u3055\u308c\u307e\u3059\uff08\u3082\u3057\u3042\u308c\u3070\uff09\u3002\u3053\u306e\u8a55\u4fa1\u306f\u3001\u3059\u3079\u3066\u306e\u6761\u4ef6\u304c\u771f\u307e\u305f\u306f\u507d\u306b\u8a55\u4fa1\u3055\u308c\u308b\u307e\u3067\u7d9a\u304d\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u6761\u4ef6\u6587\u3092\u4f7f\u3063\u3066\u4e8c\u3064\u306e\u6570\u5024\uff08x\u3068y\uff09\u3092\u6bd4\u8f03\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059: x &gt; y, x = y, x &lt; y. \u3082\u3057x\u304c1\u3067y\u304c2\u306e\u5834\u5408\u3001\u6700\u5f8c\u306ex &lt; y \u306e\u6761\u4ef6\u6587\u304c\u771f\u306b\u8a55\u4fa1\u3055\u308c\u308b\u307e\u3067\u30013\u56de\u306e\u8a55\u4fa1\u304c\u884c\u308f\u308c\u307e\u3059\u3002<\/p>\n<p>\u6761\u4ef6\u5f0f\u306b\u306f2\u3064\u306e\u30bf\u30a4\u30d7\u304c\u3042\u308a\u307e\u3059\u3002\u6700\u521d\u306e\u30bf\u30a4\u30d7\u306f\u300c\u3082\u3057\u300d\u3068\u305d\u306e\u62e1\u5f35\u3067\u3042\u308b\u300c\u3082\u3057\u305d\u308c\u4ee5\u5916\u306e\u5834\u5408\u300d\u3067\u3059\u3002\u3053\u306e\u30bf\u30a4\u30d7\u306f\u5e83\u304f\u4f7f\u308f\u308c\u3066\u3044\u307e\u3059\u30022\u3064\u76ee\u306e\u30bf\u30a4\u30d7\u306f\u300c\u30b9\u30a4\u30c3\u30c1\u300d\u3067\u3001\u3088\u308a\u5177\u4f53\u7684\u3067\u5236\u9650\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3067\u306f\u3001Java\u3067\u6761\u4ef6\u6587\u3092\u66f8\u304d\u3001\u5404\u30bf\u30a4\u30d7\u306e\u4f7f\u7528\u4f8b\u3001\u5229\u70b9\u3001\u6b20\u70b9\u306b\u3064\u3044\u3066\u5b66\u3073\u307e\u3059\u3002<\/p>\n<h2>\u524d\u63d0\u6761\u4ef6<\/h2>\n<p>\u3053\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3092\u5b9f\u884c\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u4ee5\u4e0b\u304c\u5fc5\u8981\u3067\u3059:<\/p>\n<ul class=\"post-ul\">\n<li>An environment in which you can execute Java programs to follow along with the examples. To set this up on your local machine, you will need the following:Java (version 11 or above) installed on your machine, with the compiler provided by the Java Development Kit (JDK). For Ubuntu and Debian, follow the steps for Option 1 in our tutorial, How To Install Java with Apt on Ubuntu 22.04. For other operating systems, including Mac and Windows, follow the download options for Java installation.<br \/>\nTo compile and run the code examples, this tutorial uses Java Shell, which is a Read-Evaluate-Print Loop (REPL) run from the command line. To get started with JShell, check out the Introduction to JShell guide.<\/li>\n<li>Familiarity with Java and object-oriented programming, which you can find in our tutorial, How To Write Your First Program in Java.<\/li>\n<li>An understanding of Java data types, which is discussed in our tutorial, Understanding Data Types in Java<br \/>\n.<\/li>\n<\/ul>\n<h2>\u6587\u3068\u30d6\u30ed\u30c3\u30af\u306e\u9055\u3044\u3092\u533a\u5225\u3059\u308b<\/h2>\n<p>\u6761\u4ef6\u6587\u304c\u6e80\u305f\u3055\u308c\u3001\u5b9f\u884c\u30d5\u30ed\u30fc\u304c\u8a72\u5f53\u3059\u308b\u30b3\u30fc\u30c9\u306e\u30d6\u30e9\u30f3\u30c1\u306b\u5411\u304b\u3046\u3068\u3001\u3053\u306e\u30d6\u30e9\u30f3\u30c1\u306f\u5358\u4e00\u306e\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u307e\u305f\u306f\u30b3\u30fc\u30c9\u306e\u30d6\u30ed\u30c3\u30af\u306e\u3044\u305a\u308c\u304b\u3067\u3042\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3068\u30b3\u30fc\u30c9\u306e\u30d6\u30ed\u30c3\u30af\u306f\u7570\u306a\u308b\u65b9\u6cd5\u3067\u51e6\u7406\u3055\u308c\u308b\u305f\u3081\u3001\u305d\u308c\u3089\u3092\u533a\u5225\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n<p>\u6587\uff08\u3076\u3093\uff09\u306f\u3001\u901a\u5e38\uff08\u3064\u3046\u3058\u3087\u3046\uff091\u884c\uff08\u3044\u3061\u304e\u3087\u3046\uff09\u3067\u5b9f\u884c\uff08\u3058\u3063\u3053\u3046\uff09\u3055\u308c\u3001\u30bb\u30df\u30b3\u30ed\u30f3\u3067\u7d42\u4e86\uff08\u3057\u3085\u3046\u308a\u3087\u3046\uff09\u3057\u307e\u3059\u3002\u4f8b\uff08\u308c\u3044\uff09\u3048\u3070\u3001\u4ee5\u4e0b\uff08\u3044\u304b\uff09\u306e\u6587\u3092\u4f7f\u7528\uff08\u3057\u3088\u3046\uff09\u3057\u3066\u3001&#8221;example&#8221;\u3092\u51fa\u529b\uff08\u3057\u3085\u3064\u308a\u3087\u304f\uff09\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"jshell&gt;\">System.out.println<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#8220;example&#8221;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"post-conf-info\">\n<p class=\"post-conf-desc\">Info<\/p>\n<div>\u60c5\u5831\uff1a\u3053\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u306e\u4f8b\u30b3\u30fc\u30c9\u306b\u6cbf\u3063\u3066\u9032\u3081\u308b\u305f\u3081\u306b\u3001\u30ed\u30fc\u30ab\u30eb\u30b7\u30b9\u30c6\u30e0\u4e0a\u3067Java Shell\u30c4\u30fc\u30eb\u3092\u958b\u304f\u306b\u306f\u3001jshell\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001jshell&gt; \u30d7\u30ed\u30f3\u30d7\u30c8\u306e\u5f8c\u306b\u8ffd\u52a0\u3057\u3066ENTER\u30ad\u30fc\u3092\u62bc\u3059\u3053\u3068\u3067\u3001\u4f8b\u3092\u30b3\u30d4\u30fc\u3001\u8cbc\u308a\u4ed8\u3051\u3001\u307e\u305f\u306f\u7de8\u96c6\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002jshell\u3092\u7d42\u4e86\u3059\u308b\u306b\u306f\u3001\/exit\u3068\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/div>\n<\/div>\n<p>\u3053\u306e\u6587\u306f\u3001\u4f8b\u3068\u3057\u3066\u6587\u5b57\u5217\u300cexample\u300d\u3092\u51fa\u529b\u3059\u308b\u305f\u3081\u306b\u3001println()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u6307\u793a\u304c\u306a\u3044\u9650\u308a\u3001Java\u306f\u3053\u306e\u6587\u3092\u6761\u4ef6\u306a\u3057\u306b\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n<div class=\"post-conf-note\">\n<p class=\"post-conf-desc\">Note<\/p>\n<div>\u6ce8\u610f\uff1a<br \/>\n\u6587\u306f\u901a\u5e38\u30011\u884c\u3067\u66f8\u304b\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u304c\u3001\u516c\u5f0f\u306e\u898f\u5247\u3067\u306f1\u884c80\u6587\u5b57\u3088\u308a\u9577\u3044\u884c\u306f\u907f\u3051\u308b\u3079\u304d\u3067\u3059\u3002<br \/>\n\u3082\u3057\u6587\u304c80\u6587\u5b57\u3092\u8d85\u3048\u308b\u5834\u5408\u306f\u3001\u8907\u6570\u884c\u306b\u5206\u5272\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<br \/>\n\u307e\u305f\u3001\u30e9\u30e0\u30c0\u5f0f\u306a\u3069\u306e\u5834\u5408\u3001\u6587\u3092\u6570\u884c\u306b\u308f\u305f\u3063\u3066\u8a18\u8ff0\u3059\u308b\u65b9\u304c\u4fbf\u5229\u3067\u76f4\u611f\u7684\u3067\u3059\u3002<br \/>\n\u3044\u305a\u308c\u306b\u305b\u3088\u3001Java\u3067\u306f\u6587\u5185\u306e\u6539\u884c\u306b\u69cb\u6587\u4e0a\u306e\u8981\u4ef6\u306f\u3042\u308a\u307e\u305b\u3093\u306e\u3067\u3001\u65b0\u3057\u3044\u884c\u3067\u6587\u3092\u7d9a\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<br \/>\n\u3053\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u306e\u4f8b\u6587\u306e\u4e00\u90e8\u3092\u66f8\u304d\u76f4\u3057\u3066\u3001\u6587\u3092\u8907\u6570\u884c\u306b\u5206\u3051\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/div>\n<\/div>\n<p>\u6587\u3092\u307e\u3068\u3081\u3066\u5b9f\u884c\u3059\u308b\u969b\u306b\u30d6\u30ed\u30c3\u30af\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u30d6\u30ed\u30c3\u30af\u3068\u306f\u3001\u958b\u59cb\u62ec\u5f27\uff08{\uff09\u3067\u59cb\u307e\u308a\u3001\u7d42\u4e86\u62ec\u5f27\uff08}\uff09\u3067\u7d42\u308f\u308b0\u500b\u4ee5\u4e0a\u306e\u6587\u306e\u30b0\u30eb\u30fc\u30d7\u3067\u3059\u3002\u524d\u306e\u30b3\u30fc\u30c9\u3092\u66f8\u304d\u63db\u3048\u3066\u3001\u6b21\u306e\u3088\u3046\u306b\u30d6\u30ed\u30c3\u30af\u306e\u4e2d\u306b\u914d\u7f6e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"jshell&gt;\"><span class=\"token punctuation\">{<\/span><\/li>\n<li data-prefix=\"jshell&gt;\">System.out.println<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#8220;example&#8221;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/li>\n<li data-prefix=\"jshell&gt;\"><span class=\"token punctuation\">}<\/span><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u4e0a\u8a18\u306e\u30d6\u30ed\u30c3\u30af\u3067\u306f\u3001System.out.println(&#8220;example&#8221;);\u306e\u524d\u306b4\u3064\u306e\u30b9\u30da\u30fc\u30b9\u304c\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u306e4\u3064\u306e\u30b9\u30da\u30fc\u30b9\u306f\u30a4\u30f3\u30c7\u30f3\u30c8\u3068\u547c\u3070\u308c\u307e\u3059\u3002Python\u306a\u3069\u4ed6\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3068\u306f\u7570\u306a\u308a\u3001Java\u3067\u306f\u30a4\u30f3\u30c7\u30f3\u30c8\u306f\u5fc5\u8981\u3067\u306f\u306a\u304f\u3001\u30b3\u30fc\u30c9\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u307e\u305b\u3093\u3002\u3057\u304b\u3057\u3001\u53ef\u8aad\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u3001\u304a\u3088\u3073\u6163\u4f8b\u3068\u3057\u3066\u3001\u30d6\u30ed\u30c3\u30af\u5185\u306e\u884c\u306f\u901a\u5e384\u3064\u306e\u30b9\u30da\u30fc\u30b9\u3092\u30a4\u30f3\u30c7\u30f3\u30c8\u3057\u307e\u3059\u3002\u307b\u3068\u3093\u3069\u306e\u30b3\u30fc\u30c9\u30a8\u30c7\u30a3\u30bf\u306f\u81ea\u52d5\u30a4\u30f3\u30c7\u30f3\u30c8\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u6163\u4f8b\u306f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3084\u30a8\u30c7\u30a3\u30bf\u9593\u3067\u7570\u306a\u308a\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u30b3\u30fc\u30c9\u30a8\u30c7\u30a3\u30bf\u304c\u30a4\u30f3\u30c7\u30f3\u30c8\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001Java\u306e\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u969b\u306b\u306f4\u3064\u306e\u30b9\u30da\u30fc\u30b9\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3067\u304a\u3059\u3059\u3081\u3055\u308c\u3066\u3044\u308bJshell\u306f\u3001\u81ea\u52d5\u7684\u306b4\u3064\u306e\u30b9\u30da\u30fc\u30b9\u3092\u30a4\u30f3\u30c7\u30f3\u30c8\u3068\u3057\u3066\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u5834\u5408\u3001\u30b3\u30fc\u30c9\u3092\u30d6\u30ed\u30c3\u30af\u5185\u306b\u914d\u7f6e\u3057\u3066\u3082\u6761\u4ef6\u304c\u306a\u3044\u305f\u3081\u3001\u9055\u3044\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u6587\u304c\u30d6\u30ed\u30c3\u30af\u5185\u306b\u3042\u308b\u304b\u3069\u3046\u304b\u306b\u95a2\u308f\u3089\u305a\u3001\u4f8b\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002jshell\u3067\u524d\u306e2\u3064\u306e\u4f8b\u3092\u5b9f\u884c\u3059\u308b\u3068\u3001\u3069\u3061\u3089\u306e\u5834\u5408\u3067\u3082\u540c\u3058\u51fa\u529b\u304c\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>example<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u4e0a\u8a18\u306e\u51fa\u529b\u306f\u3001\u5370\u5237\u306e\u4f8b\u6587\u304c\u30d6\u30ed\u30c3\u30af\u5185\u5916\u3067\u540c\u3058\u3088\u3046\u306b\u6a5f\u80fd\u3059\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u6587\u3084\u30d6\u30ed\u30c3\u30af\u306e\u4f5c\u308a\u65b9\u306b\u3064\u3044\u3066\u5b66\u3073\u307e\u3057\u305f\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u30d6\u30ed\u30c3\u30af\u5185\u306b\u6761\u4ef6\u6587\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u30d6\u30ed\u30c3\u30af\u5185\u306e\u6587\u306f\u4e00\u7dd2\u306b\u5b9f\u884c\u3055\u308c\u3001\u6761\u4ef6\u306b\u3088\u3063\u3066\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<\/p>\n<h2>\u5358\u4e00\u306e\u6761\u4ef6\u5f0f\u3092\u4f7f\u7528\u3059\u308b<\/h2>\n<p>\u6700\u3082\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u308b\u6761\u4ef6\u6587\u306f\u3001if\u6587\u3067\u3059\u3002\u6761\u4ef6\u6bd4\u8f03\u306e\u7d50\u679c\u304c\u771f\u307e\u305f\u306f\u507d\u306e\u30d6\u30fc\u30eb\u5024\u3067\u3042\u308c\u3070\u3001if\u6587\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002if\u6587\u306f\u3001\u6700\u3082\u5358\u7d14\u306a\u5f62\u3067\u306f\u5358\u4e00\u306e\u6761\u4ef6\u3068\u306a\u308a\u307e\u3059\u304c\u3001\u3088\u308a\u8907\u96d1\u306a\u69cb\u9020\u3092\u6301\u3064\u3053\u3068\u3082\u3042\u308a\u3001\u5f8c\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<p>\u5358\u4e00\u306eif\u6587\u306f\u3001\u5358\u4e00\u306e\u6761\u4ef6\u306e\u4e0b\u3067\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u6761\u4ef6\u4ed8\u304d\u3067\u5b9f\u884c\u3055\u308c\u308b\u30b3\u30fc\u30c9\u306f\u30d6\u30ed\u30c3\u30af\u5185\u306b\u914d\u7f6e\u3057\u3001\u6700\u521d\u306bif\uff08\u30d6\u30fc\u30eb\u5f0f\uff09\u3092\u7f6e\u304d\u307e\u3059\u3002\u5f0f\u3001\u3064\u307e\u308a\u6761\u4ef6\u304ctrue\u3067\u3042\u308b\u5834\u5408\u306b\u306e\u307f\u3001\u30b3\u30fc\u30c9\u30d6\u30ed\u30c3\u30af\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002\u5f0f\u304cfalse\u306b\u8a55\u4fa1\u3055\u308c\u308b\u5834\u5408\u306f\u3001\u6761\u4ef6\u4ed8\u304d\u30d6\u30ed\u30c3\u30af\u30b3\u30fc\u30c9\u306f\u30b9\u30ad\u30c3\u30d7\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u4f8b\u3067\u306f\u30012\u3064\u306e\u6570\u5b57\u3092\u6bd4\u8f03\u3059\u308b\u30b3\u30fc\u30c9\u306e\u65ad\u7247\u3092\u66f8\u304d\u307e\u3059\u3002\u6bd4\u8f03\u306e\u7d50\u679c\u306b\u5fdc\u3058\u3066\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u8868\u793a\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u884c\u3092jshell\u306b\u8ffd\u52a0\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"1\"><span class=\"token keyword\">int<\/span> x <span class=\"token operator\">=<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><\/li>\n<li data-prefix=\"2\"><span class=\"token keyword\">int<\/span> y <span class=\"token operator\">=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><\/li>\n<li data-prefix=\"3\"><mark><span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>x <span class=\"token operator\">&gt;<\/span> y<span class=\"token punctuation\">)<\/span><\/mark> <span class=\"token punctuation\">{<\/span><\/li>\n<li data-prefix=\"4\"><span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>x <span class=\"token operator\">+<\/span> <span class=\"token string\">&#8221; is bigger than &#8220;<\/span> <span class=\"token operator\">+<\/span> y<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/li>\n<li data-prefix=\"5\"><span class=\"token punctuation\">}<\/span><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u6700\u521d\u306e2\u884c\u3067\u5909\u6570x\u3068y\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u30023\u884c\u76ee\u306f\u6761\u4ef6\u4ed8\u304d\u300c\u3082\u3057 (x &gt; y)\u300d\u3067\u3001x\u304cy\u3088\u308a\u5927\u304d\u3044\u304b\u3069\u3046\u304b\u3092\u6bd4\u8f03\u3057\u307e\u3059\u3002\u6bd4\u8f03\u306f\u5e38\u306b\u62ec\u5f27\u5185\u3067\u884c\u308f\u308c\u307e\u3059\u3002<\/p>\n<p>\u30d6\u30ed\u30c3\u30af\u30b3\u30fc\u30c9\u306f\u3001\u6700\u521d\u306e\u958b\u304d\u4e2d\u30ab\u30c3\u30b3\uff08{\uff09\u3067\u59cb\u307e\u308a\u3001\u9589\u3058\u4e2d\u30ab\u30c3\u30b3\uff08}\uff09\u3067\u7d42\u308f\u308a\u307e\u3059\u3002\u30d6\u30ed\u30c3\u30af\u5185\u3067\u306f\u3001\u6587\u304cprintln()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066x\u304cy\u3088\u308a\u5927\u304d\u3044\u3053\u3068\u3092\u8868\u793a\u3057\u307e\u3059\u3002\u3053\u306e\u6761\u4ef6\u304c\u771f\u306e\u5834\u5408\u306b\u306e\u307f\u3001\u30d6\u30ed\u30c3\u30af\u30b3\u30fc\u30c9\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>jshell\u3067\u3053\u306e\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3059\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u51fa\u529b\u304c\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>x ==&gt; 1 y ==&gt; 0 1 is bigger than 0<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u51fa\u529b\u306e\u6700\u521d\u306e2\u884c\u306f\u3001x\u3068y\u306e\u5024\u3092\u78ba\u8a8d\u3057\u3066\u3044\u307e\u3059\u30023\u884c\u76ee\u3067\u306f\u30011\u306f0\u3088\u308a\u5927\u304d\u3044\u3068\u8aad\u307f\u53d6\u3089\u308c\u3066\u304a\u308a\u3001\u6761\u4ef6\u5f0f\u304c\u771f\u3067\u3042\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u3066\u3044\u307e\u3059\u3002\u3064\u307e\u308a\u3001x\u306fy\u3088\u308a\u3082\u5927\u304d\u3044\u3067\u3059\u3002\u3082\u3057x\u3092y\u3088\u308a\u3082\u5c0f\u3055\u304f\u5909\u3048\u308b\u3068\u3001\u3053\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u306f\u8868\u793a\u3055\u308c\u306a\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u6761\u4ef6\u6587\u306b\u304a\u3051\u308b\u6700\u3082\u91cd\u8981\u306a\u30eb\u30fc\u30eb\u306f\u3001\u8a55\u4fa1\u3055\u308c\u308b\u5f0f\u304c\u771f\u507d\u5024\u306b\u8a55\u4fa1\u3055\u308c\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\u4ed6\u306e\u3069\u306e\u5834\u5408\u3067\u3082\u3001\u6bd4\u8f03\u3057\u3066\u3044\u308b\u3082\u306e\u3092\u771f\u507d\u5024\u306b\u5909\u63db\u3067\u304d\u306a\u3044\u3068\u3044\u3046\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3059\u3002<\/p>\n<p>\u8ffd\u52a0\u306e\u7df4\u7fd2\u3068\u3057\u3066\u3001\u30d6\u30fc\u30eb\u5024\u3067\u306f\u306a\u3044\u5f0f\u3067\u30a8\u30e9\u30fc\u3092\u8d77\u3053\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u308c\u3092\u884c\u3046\u306b\u306f\u3001\u30d6\u30fc\u30eb\u5024\u306b\u5909\u63db\u3067\u304d\u306a\u3044int\u5909\u6570\u3092\u6761\u4ef6\u306e\u62ec\u5f27\u5185\u306b\u914d\u7f6e\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"jshell&gt;\">int x <span class=\"token operator\">=<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><\/li>\n<li data-prefix=\"jshell&gt;\"><mark><span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>x<span class=\"token punctuation\">)<\/span><\/mark> <span class=\"token punctuation\">{<\/span><\/li>\n<li data-prefix=\"jshell&gt;\">System.out.println<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#8220;Will this work?&#8221;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/li>\n<li data-prefix=\"jshell&gt;\"><span class=\"token punctuation\">}<\/span><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>1\u884c\u76ee\u3067\u306f\u3001int\u578b\u306e\u5909\u6570x\u3092\u5b9a\u7fa9\u3057\u3001\u5024\uff081\uff09\u3092\u4ee3\u5165\u3057\u307e\u3059\u30022\u884c\u76ee\u306f\u6761\u4ef6\u5f0fif (x)\u3067\u3042\u308a\u3001x\u3092\u30d6\u30fc\u30ea\u30a2\u30f3\u306b\u5909\u63db\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u306a\u3044\u305f\u3081\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u304c\u30af\u30e9\u30c3\u30b7\u30e5\u3057\u307e\u3059\u3002\u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u3092jshell\u3067\u5b9f\u884c\u3059\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u30a8\u30e9\u30fc\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>x ==&gt; 1 | Error: | incompatible types: int cannot be converted to boolean | if (x) { | ^<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u6700\u521d\u306e\u884c\u306f\u3001x\u304c\u50241\u3092\u53d7\u3051\u53d6\u3063\u305f\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u3044\u307e\u3059\u3002\u6b21\u306e\u884c\u3067\u306f\u3001x\u306e\u3088\u3046\u306aint\u5024\u306fboolean\u5024\u306b\u5909\u63db\u3067\u304d\u306a\u3044\u3068\u3044\u3046\u4e92\u63db\u6027\u306e\u306a\u3044\u578b\u306e\u30a8\u30e9\u30fc\u304c\u8aac\u660e\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306a\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306f\u3001\u6bd4\u8f03\u3092\u518d\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3053\u3068\u304c\u5206\u304b\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n<p>\u3053\u306e\u3088\u3046\u306a\u975e\u30d6\u30fc\u30eb\u6761\u4ef6\u6587\u306f\u3001\u6761\u4ef6\u6587\u306b\u304a\u3051\u308b\u6700\u3082\u4e00\u822c\u7684\u306a\u843d\u3068\u3057\u7a74\u3067\u3042\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u5e78\u3044\u306a\u3053\u3068\u306b\u3001\u73fe\u4ee3\u306eIDE\uff08\u7d71\u5408\u958b\u767a\u74b0\u5883\uff09\u306f\u3001\u66f8\u304d\u306a\u304c\u3089\u3053\u306e\u3088\u3046\u306a\u30a8\u30e9\u30fc\u3092\u30ad\u30e3\u30c3\u30c1\u3057\u3066\u304f\u308c\u307e\u3059\u3002\u305d\u308c\u3067\u3082\u3001IDE\u3092\u4f7f\u308f\u306a\u304f\u3066\u3082\u3001\u30a8\u30e9\u30fc\u306f\u6bd4\u8f03\u7684\u7c21\u5358\u306b\u898b\u3064\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>\u30d6\u30ed\u30c3\u30af\u3092\u4f7f\u308f\u305a\u306b\u6761\u4ef6\u6587\u3092\u66f8\u304f<\/h2>\n<p>Java\u306eif\u6587\u306e\u7279\u7570\u306a\u70b9\u306f\u3001\u30b3\u30fc\u30c9\u30d6\u30ed\u30c3\u30af\u3092\u4f7f\u308f\u305a\u306b\u77ed\u3044\u5f62\u5f0f\u3067\u66f8\u304f\u65b9\u6cd5\u304c\u3042\u308b\u3053\u3068\u3067\u3059\u3002\u30b3\u30fc\u30c9\u30d6\u30ed\u30c3\u30af\u306a\u3057\u3067\u6761\u4ef6\u5206\u5c90\u3092\u3059\u308b\u3053\u3068\u306f\u304a\u3059\u3059\u3081\u3055\u308c\u307e\u305b\u3093\u304c\u3001\u3053\u306e\u3088\u3046\u306a\u66f8\u304d\u65b9\u3082\u53ef\u80fd\u3067\u3042\u308b\u3053\u3068\u3092\u77e5\u3063\u3066\u304a\u304f\u3079\u304d\u3067\u3059\u3002\u5b9f\u969b\u306e\u3068\u3053\u308d\u3001Java\u306e\u8a66\u9a13\u306e\u52c9\u5f37\u3084\u5c31\u8077\u9762\u63a5\u3067\u3001\u3053\u3093\u306a\u6df7\u4e71\u3059\u308b\u3088\u3046\u306a\u4f8b\u306b\u906d\u9047\u3059\u308b\u304b\u3082\u3057\u308c\u306a\u3044\u306e\u3067\u3001\u6e96\u5099\u3057\u3066\u304a\u304f\u3079\u304d\u3067\u3059\u3002<\/p>\n<p>\u4f8b\u3048\u3070\u3001\u30b3\u30fc\u30c9\u306e\u30d6\u30ed\u30c3\u30af\u3092\u4f7f\u3046\u4ee3\u308f\u308a\u306b\u3001\u3053\u3093\u306a\u3075\u3046\u306b\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u66f8\u304f\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"1\"><span class=\"token keyword\">int<\/span> x <span class=\"token operator\">=<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><\/li>\n<li data-prefix=\"2\"><span class=\"token keyword\">int<\/span> y <span class=\"token operator\">=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><\/li>\n<li data-prefix=\"3\"><mark><span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>x <span class=\"token operator\">&gt;<\/span> y<span class=\"token punctuation\">)<\/span><\/mark><\/li>\n<li data-prefix=\"4\"><span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>x <span class=\"token operator\">+<\/span> <span class=\"token string\">&#8221; is bigger than &#8220;<\/span> <span class=\"token operator\">+<\/span> y<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u524d\u306e\u4f8b\u3068\u306e\u9055\u3044\u306f\u3001\u6761\u4ef6\u6587if(x &gt; y)\u306e\u5f8c\u306b\u30b3\u30fc\u30c9\u306e\u30d6\u30ed\u30c3\u30af\u304c\u306a\u3044\u3053\u3068\u3067\u3059\u3002\u4ee3\u308f\u308a\u306b\u3001\u5bfe\u8c61\u306e\u6587\u300cSystem.out.println(x + &#8221; is bigger than &#8221; + y)\u300d\u304c\u3001\u6761\u4ef6\u6587if(x &gt; y)\u306e\u76f4\u5f8c\u306b\u3059\u3050\u306b\u7d9a\u304d\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u3092jshell\u3067\u5b9f\u884c\u3059\u308b\u3068\u3001\u524d\u306e\u4f8b\u3068\u540c\u3058\u51fa\u529b\u304c\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>x ==&gt; 1 y ==&gt; 0 1 is bigger than 0<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u6700\u521d\u306e2\u884c\u306b\u306f\u3001x\u3068y\u306e\u5024\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u30021\u304c0\u3088\u308a\u3082\u5927\u304d\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u30e1\u30c3\u30bb\u30fc\u30b8\u306f3\u884c\u76ee\u306b\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u6761\u4ef6\u306b\u7d9a\u304f\u30d6\u30ed\u30c3\u30af\u30b3\u30fc\u30c9\u304c\u306a\u3044\u5834\u5408\u3001\u6761\u4ef6\u6587\u306e\u76f4\u5f8c\u306e\u884c\u306e\u307f\u304c\u6761\u4ef6\u306b\u4f9d\u5b58\u3057\u307e\u3059\u3002\u3053\u306e\u5834\u5408\u3001\u884c4\u4ee5\u964d\u306e\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306f\u6761\u4ef6\u306b\u304b\u304b\u308f\u3089\u305a\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001x\u306e\u5024\u30920\u306b\u5909\u3048\u3066\u3001y\u3088\u308a\u3082\u5927\u304d\u304f\u306a\u3089\u306a\u3044\u3088\u3046\u306b\u3057\u3001\u6b21\u306e\u3088\u3046\u306b5\u884c\u76ee\u3092\u8ffd\u52a0\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"1\"><span class=\"token keyword\">int<\/span> x <span class=\"token operator\">=<\/span> <mark><span class=\"token number\">0<\/span><\/mark><span class=\"token punctuation\">;<\/span><\/li>\n<li data-prefix=\"2\"><span class=\"token keyword\">int<\/span> y <span class=\"token operator\">=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><\/li>\n<li data-prefix=\"3\"><span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>x <span class=\"token operator\">&gt;<\/span> y<span class=\"token punctuation\">)<\/span><\/li>\n<li data-prefix=\"4\"><span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>x <span class=\"token operator\">+<\/span> <span class=\"token string\">&#8221; is bigger than &#8220;<\/span> <span class=\"token operator\">+<\/span> y<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/li>\n<li data-prefix=\"5\"><mark><span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#8220;This line is always printed.&#8221;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/mark><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u3092jshell\u3067\u5b9f\u884c\u3059\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u51fa\u529b\u304c\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>x ==&gt; 0 y ==&gt; 0 This line is always printed.<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>1\u884c\u76ee\u30682\u884c\u76ee\u306b\u306fx\u3068y\u306e\u5024\u304c\u5370\u5237\u3055\u308c\u307e\u3059\u3002\u4e21\u65b9\u306e\u5024\u306f0\u3067\u3042\u308a\u3001\u305d\u308c\u306f\u7b49\u3057\u3044\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u6761\u4ef6\u6587x &gt; y\u306ffalse\u3092\u8fd4\u3057\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001x\u304cy\u3088\u308a\u5927\u304d\u3044\u3068\u3044\u30464\u884c\u76ee\u306e\u6587\u306f\u5370\u5237\u3055\u308c\u307e\u305b\u3093\u3002\u3057\u304b\u3057\u3001\u6761\u4ef6\u306b\u4f9d\u5b58\u3057\u306a\u3044\u305f\u3081\u30015\u884c\u76ee\u306f\u5370\u5237\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001\uff15\u884c\u76ee\u306e\u30a4\u30f3\u30c7\u30f3\u30c8\uff08\u5b57\u4e0b\u3052\uff09\u306f\u4e0d\u8981\u3067\u3059\u3002\u305d\u308c\u306f\uff15\u884c\u76ee\u306e\u5b9f\u884c\u304c\u6761\u4ef6\u306b\u4f9d\u5b58\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u793a\u3059\u305f\u3081\u306b\u542b\u307e\u308c\u3066\u3044\u307e\u3057\u305f\u304c\u3001\u5b9f\u969b\u306b\u306f\u305d\u306e\u3088\u3046\u306a\u5834\u5408\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u30a4\u30f3\u30c7\u30f3\u30c8\u306f\u7701\u7565\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u304c\u3001\u305d\u308c\u306b\u3088\u3063\u3066\u30b3\u30fc\u30c9\u304c\u3088\u308a\u660e\u78ba\u306b\u306a\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u30b3\u30fc\u30c9\u30d6\u30ed\u30c3\u30af\u306a\u3057\u3067\u6761\u4ef6\u6587\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u306f\u76f4\u611f\u7684\u3067\u306f\u306a\u304f\u3001\u8ffd\u3044\u306b\u304f\u3044\u305f\u3081\u3001\u7565\u8a18\u6cd5\u306f\u63a7\u3048\u3081\u306b\u4f7f\u7528\u3059\u308b\u3079\u304d\u3067\u3059\u3002\u30b3\u30fc\u30c9\u3092\u304d\u308c\u3044\u3067\u7406\u89e3\u3057\u3084\u3059\u304f\u4fdd\u3064\u305f\u3081\u306b\u3001\u30d6\u30ed\u30c3\u30af\u6587\u3092\u4f7f\u7528\u3059\u308b\u65b9\u304c\u826f\u3044\u3067\u3059\u3002\u305d\u308c\u3089\u306f\u3088\u308a\u8aad\u307f\u3084\u3059\u304f\u3001\u8907\u6570\u884c\u306e\u6761\u4ef6\u4ed8\u304d\u306e\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u5165\u308c\u5b50\u306eif\u6587\u306f\u3001\u66f8\u304f\u3053\u3068\u306f\u53ef\u80fd\u3067\u3059\u304c\u901a\u5e38\u306f\u63a8\u5968\u3055\u308c\u306a\u3044\u30b3\u30fc\u30c9\u306e\u4f8b\u3067\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u5165\u308c\u5b50\u306eif\u6587\u3092\u63a2\u6c42\u3057\u3066\u3001\u305d\u306e\u4fa1\u5024\u3068\u6b20\u70b9\u3092\u3088\u308a\u3088\u304f\u7406\u89e3\u3057\u307e\u3059\u3002<\/p>\n<h2>\u30cd\u30b9\u30c8\u3055\u308c\u305f\u6761\u4ef6\u5206\u5c90\u6587<\/h2>\n<p>\u3088\u308a\u8907\u96d1\u306a\u6761\u4ef6\u69cb\u9020\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u591a\u304f\u306e if \u6587\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002\u30cd\u30b9\u30c8\u3055\u308c\u305f if \u6587\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u30b3\u30fc\u30c9\u30d6\u30ed\u30c3\u30af\u3067\u306f\u306a\u304f\u89aa\u306e if \u6587\u306e\u4e2d\u306b\u5225\u306e if \u6587\u3092\u914d\u7f6e\u3057\u307e\u3059\u3002<\/p>\n<p>\u901a\u5e38\u3001\u30b3\u30fc\u30c9\u3092\u8aad\u307f\u3065\u3089\u304f\u7406\u89e3\u3057\u306b\u304f\u304f\u3059\u308b\u305f\u3081\u3001\u3053\u306e\u65b9\u6cd5\u306f\u63a8\u5968\u3055\u308c\u307e\u305b\u3093\u3002\u3057\u304b\u3057\u306a\u304c\u3089\u3001\u5165\u308c\u5b50\u306eif\u6587\u306b\u306f\u5834\u5408\u306b\u3088\u3063\u3066\u306f\u5b9f\u7528\u7684\u306a\u7528\u9014\u304c\u3042\u308b\u305f\u3081\u3001\u7406\u89e3\u3057\u3066\u3044\u308b\u3068\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u304c\u3069\u306e\u3088\u3046\u306b\u884c\u308f\u308c\u308b\u306e\u304b\u7406\u89e3\u3059\u308b\u305f\u3081\u306b\u3001\u524d\u306e\u4f8b\u3092\u62e1\u5f35\u3057\u3066\u3001\u3082\u30461\u3064\u306eif\u6587\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002y\u3092\u518d\u3073\u8a55\u4fa1\u3057\u30660\u3068\u7b49\u3057\u3044\u304b\u3069\u3046\u304b\u3092\u6bd4\u8f03\u3057\u307e\u3059\u3002\u6b21\u306e\u884c\u3092jshell\u306b\u8ffd\u52a0\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"1\"><span class=\"token keyword\">int<\/span> x <span class=\"token operator\">=<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><\/li>\n<li data-prefix=\"2\"><span class=\"token keyword\">int<\/span> y <span class=\"token operator\">=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><\/li>\n<li data-prefix=\"3\"><span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>x <span class=\"token operator\">&gt;<\/span> y<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/li>\n<li data-prefix=\"4\"><mark><span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>y <span class=\"token operator\">==<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><\/mark> <span class=\"token punctuation\">{<\/span><\/li>\n<li data-prefix=\"5\"><span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#8220;This is legal but does not look clean.&#8221;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/li>\n<li data-prefix=\"6\"><span class=\"token punctuation\">}<\/span><\/li>\n<li data-prefix=\"7\"><span class=\"token punctuation\">}<\/span><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u524d\u306e\u4f8b\u304b\u3089\u6700\u521d\u306e3\u884c\u306f\u5909\u308f\u308a\u307e\u305b\u3093\uff1aint\u5909\u6570(x\u3068y)\u3092\u5b9a\u7fa9\u3057\u3001\u6bd4\u8f03\u3057\u307e\u3059\u30024\u884c\u76ee\u3067\u306f\u3001\u3082\u30461\u3064\u306eif\u6587\u304c\u3001y\u304c0\u3068\u7b49\u3057\u3044\u304b\u3069\u3046\u304b\u3092\u6bd4\u8f03\u3057\u307e\u3059\u3002\u771f\u306e\u5834\u5408\u3001Java\u306f5\u884c\u76ee\u306b\u9032\u307f\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u300c\u3053\u308c\u306f\u5408\u6cd5\u3067\u3059\u304c\u3001\u304d\u308c\u3044\u306b\u898b\u3048\u307e\u305b\u3093\u300d\u3068\u3044\u3046println()\u6587\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n<p>jshell\u3067\u3053\u308c\u3092\u5b9f\u884c\u3059\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u51fa\u529b\u304c\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>x ==&gt; 1 y ==&gt; 0 This is legal but does not look clean.<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u6700\u521d\u306e2\u884c\u306f\u3001x\u3068y\u306e\u5024\u3092\u78ba\u8a8d\u3057\u3066\u3044\u307e\u3059\u30023\u884c\u76ee\u306f\u300c\u3053\u308c\u306f\u6b63\u5f53\u3067\u3059\u304c\u3001\u304d\u308c\u3044\u306b\u306f\u898b\u3048\u307e\u305b\u3093\u3002\u300d\u3068\u8aad\u307f\u307e\u3059\u3002\u3053\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u306f\u3001\u30d6\u30ed\u30c3\u30af\u30b3\u30fc\u30c9\u304c\u5b9f\u884c\u3055\u308c\u305f\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u3044\u307e\u3059\u3002\u306a\u305c\u306a\u3089\u3070\u3001x &gt; y \u3068 y == 0 \u306e\u4e21\u65b9\u306e\u6761\u4ef6\u304c\u6e80\u305f\u3055\u308c\u3066\u3044\u308b\u304b\u3089\u3067\u3059\u3002<\/p>\n<p>\u65e5\u672c\u8a9e\u3067\u306e\u4e00\u3064\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u3068\u3057\u3066\u3001\u6b21\u306e\u6587\u7ae0\u3092\u8a00\u3044\u63db\u3048\u307e\u3059\uff1a<br \/>\n\u3053\u306e\u3088\u3046\u306b\u3057\u3066\u3001if\u6587\u3092\u7121\u5236\u9650\u306b\u30cd\u30b9\u30c8\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u30cd\u30b9\u30c8\u3055\u308c\u305fif\u6587\u304c\u5897\u3048\u308b\u3054\u3068\u306b\u3001\u30b3\u30fc\u30c9\u306e\u8907\u96d1\u3055\u306f\u9ad8\u307e\u308a\u3001\u8aad\u307f\u3084\u3059\u3055\u306f\u4f4e\u4e0b\u3057\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001if\u6587\u306e\u30cd\u30b9\u30c8\u306f\u4e00\u822c\u7684\u306b\u306f\u826f\u3044\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u6163\u7fd2\u3068\u306f\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n<p>\u305f\u3060\u3057\u3001\u5165\u308c\u5b50\u306b\u306a\u3063\u305f\u6761\u4ef6\u4ed8\u304d\u69cb\u9020\u306f\u5b9f\u7528\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u6642\u306b\u306f\u3001\u53ef\u8aad\u6027\u3092\u72a0\u7272\u306b\u3057\u3066\u8907\u96d1\u3055\u3092\u5897\u3059\u3053\u3068\u3067\u3001\u3088\u308a\u77ed\u3044\u30b3\u30fc\u30c9\u3092\u66f8\u3044\u3066\u6642\u9593\u3092\u7bc0\u7d04\u3059\u308b\u3053\u3068\u304c\u4fa1\u5024\u304c\u3042\u308b\u3088\u3046\u306b\u601d\u308f\u308c\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u7d50\u679c\u3001\u8a66\u9a13\u3084\u5c31\u8077\u9762\u63a5\u3001\u73fe\u5b9f\u4e16\u754c\u306e\u751f\u7523\u7684\u306a\u30b3\u30fc\u30c9\u3067\u5165\u308c\u5b50\u306e\u6587\u304c\u51fa\u3066\u304f\u308b\u3053\u3068\u3082\u3042\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n<h2>\u4ee5\u4e0b\u306f\u65e5\u672c\u8a9e\u3067\u306e\u30d1\u30e9\u30d5\u30ec\u30fc\u30ba\u3067\u3059\uff1a<br \/>\n\u300c\u62e1\u5f35\u3055\u308c\u305fIf\u6761\u4ef6\u6587\u3092\u4f7f\u3063\u3066\u3001Else If\u6587\u3084Else\u6587\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u304f\u3060\u3055\u3044\u3002\u300d<\/h2>\n<p>\u3082\u3057\u6761\u4ef6\u5206\u5c90\u3092\u8ffd\u52a0\u306e\u30de\u30c3\u30c1\u30f3\u30b0\u6761\u4ef6\u3067\u62e1\u5f35\u3057\u305f\u3044\u5834\u5408\u306f\u3001else if\u3068else\u3092\u88dc\u8db3\u6587\u3068\u3057\u3066\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002else\u6587\u306f\u6700\u521d\u306eif\u6587\u306e\u5f8c\u306b\u306e\u307f\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 else if\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u6700\u521d\u306eif\u3068\u540c\u69d8\u306b\u7121\u5236\u9650\u306e\u8ffd\u52a0\u6761\u4ef6\u6587\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u6700\u5f8c\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u306eelse\u3067\u306f\u3001\u524d\u306e\u6761\u4ef6\u6587\u304c\u30de\u30c3\u30c1\u3057\u306a\u304b\u3063\u305f\u5834\u5408\u306b\u30d7\u30ed\u30b0\u30e9\u30e0\u30d5\u30ed\u30fc\u304c\u5f93\u3046\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30d1\u30b9\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<p>else if\u3068else\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u5358\u4e00\u306eif\u6587\u3088\u308a\u3082\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u6d41\u308c\u3092\u3088\u308a\u591a\u304f\u306e\u65b9\u5411\u306b\u5206\u5c90\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u4ed6\u306e\u3069\u306e\u65b9\u6cd5\u3067\u3082\u69cb\u7bc9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u306a\u3044\u8907\u96d1\u306a\u6761\u4ef6\u69cb\u9020\u3092\u69cb\u7bc9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30b3\u30fc\u30c9\u3092\u3055\u307e\u3056\u307e\u306a\u65b9\u5411\u306b\u5206\u5c90\u3055\u305b\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u8907\u96d1\u306a\u30d3\u30b8\u30cd\u30b9\u30b1\u30fc\u30b9\u3092\u6271\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u672c\u756a\u74b0\u5883\u306b\u304a\u3051\u308b\u30d3\u30b8\u30cd\u30b9\u8981\u4ef6\u306f\u6570\u591a\u304f\u3042\u308a\u3001\u8a2d\u8a08\u30d5\u30ed\u30fc\u306f\u5fc5\u305a\u3057\u3082\u76f4\u611f\u7684\u3067\u306f\u306a\u3044\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u4f8b\u3092\u4f7f\u3063\u3066\u3001else if\u3068else\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306e\u30a2\u30a4\u30c7\u30a2\u3092\u7406\u89e3\u3057\u307e\u3057\u3087\u3046\u3002\u4ee5\u524d\u4f7f\u7528\u3057\u305f\u30b3\u30fc\u30c9\u3092\u62e1\u5f35\u3057\u3001\u3055\u3089\u306b\u6761\u4ef6\u5206\u5c90\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u65b0\u3057\u3044\u6761\u4ef6\u5f0f\u306f\u3001\u5f15\u304d\u7d9a\u304dx\u3068y\u3092\u6bd4\u8f03\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"1\"><span class=\"token keyword\">int<\/span> x <span class=\"token operator\">=<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><\/li>\n<li data-prefix=\"2\"><span class=\"token keyword\">int<\/span> y <span class=\"token operator\">=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><\/li>\n<li data-prefix=\"3\"><span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>x <span class=\"token operator\">&gt;<\/span> y<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/li>\n<li data-prefix=\"4\"><span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>x <span class=\"token operator\">+<\/span> <span class=\"token string\">&#8221; is bigger than &#8220;<\/span> <span class=\"token operator\">+<\/span> y<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/li>\n<li data-prefix=\"5\"><span class=\"token punctuation\">}<\/span> <mark><span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>x <span class=\"token operator\">&lt;<\/span> y<span class=\"token punctuation\">)<\/span><\/mark> <span class=\"token punctuation\">{<\/span><\/li>\n<li data-prefix=\"6\"><span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>y <span class=\"token operator\">+<\/span> <span class=\"token string\">&#8221; is bigger than &#8220;<\/span> <span class=\"token operator\">+<\/span> x<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/li>\n<li data-prefix=\"7\"><span class=\"token punctuation\">}<\/span> <mark><span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>x <span class=\"token operator\">==<\/span> y<span class=\"token punctuation\">)<\/span><\/mark> <span class=\"token punctuation\">{<\/span><\/li>\n<li data-prefix=\"8\"><span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>x <span class=\"token operator\">+<\/span> <span class=\"token string\">&#8221; is equal to &#8220;<\/span> <span class=\"token operator\">+<\/span> y<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/li>\n<li data-prefix=\"9\"><span class=\"token punctuation\">}<\/span> <mark><span class=\"token keyword\">else<\/span><\/mark> <span class=\"token punctuation\">{<\/span><\/li>\n<li data-prefix=\"10\"><span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>x <span class=\"token operator\">+<\/span> <span class=\"token string\">&#8221; cannot be compared to &#8220;<\/span> <span class=\"token operator\">+<\/span> y<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/li>\n<li data-prefix=\"11\"><span class=\"token punctuation\">}<\/span><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u306b\u3088\u308b\u3068\u30011\u884c\u76ee\u30682\u884c\u76ee\u3067\u5909\u6570x\u3068y\u304c\u5b9a\u7fa9\u3055\u308c\u3001\u305d\u308c\u305e\u308c\u306e\u5024\u304c1\u30680\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u30023\u884c\u76ee\u30684\u884c\u76ee\u3067\u306f\u3001if\u6587\u3092\u4f7f\u3063\u3066x\u304cy\u3088\u308a\u5927\u304d\u3044\u304b\u3069\u3046\u304b\u3092\u8a55\u4fa1\u3057\u3066\u3044\u307e\u3059\u3002\u3082\u3057\u8a55\u4fa1\u304c\u771f\u3067\u3042\u308c\u3070\u3001\u300cx\u306fy\u3088\u308a\u5927\u304d\u3044\u300d\u3068\u3044\u3046\u30c6\u30ad\u30b9\u30c8\u304c\u8868\u793a\u3055\u308c\u3001\u6761\u4ef6\u4ed8\u304d\u69cb\u9020\u304b\u3089\u51fa\u307e\u3059\u3002\u3082\u3057\u8a55\u4fa1\u304c\u507d\u3067\u3042\u308c\u3070\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u6b21\u306e\u6761\u4ef6\u306b\u9032\u307f\u307e\u3059\u3002\u3053\u308c\u307e\u3067\u306e\u30b3\u30fc\u30c9\u306f\u4ee5\u524d\u306e\u4f8b\u3068\u540c\u3058\u3067\u3059\u3002<\/p>\n<p>5\u884c\u76ee\u306eif\u6587\u306e\u9589\u3058\u304b\u3063\u3053\u306e\u5f8c\u306b\u3001else if\u6587\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306fif\u6587\u3068\u4f3c\u305f\u69cb\u6587\u3067\u3001\u62ec\u5f27\u5185\u306b\u30d6\u30fc\u30eb\u5f0f\u304c\u3042\u308a\u3001\u305d\u306e\u5f8c\u306b\u30b3\u30fc\u30c9\u30d6\u30ed\u30c3\u30af\u304c\u7d9a\u304d\u307e\u3059\u3002\u3053\u306e\u5f0f\u306f\u3001y\u304cx\u3088\u308a\u5927\u304d\u3044\u304b\u3069\u3046\u304b\u3092\u8a55\u4fa1\u3057\u3001\u3053\u308c\u306f\u4ee5\u524d\u306eif\u6587\u3068\u306f\u9006\u306e\u7d50\u679c\u3068\u306a\u308a\u307e\u3059\u3002\u3082\u3057\u5f0f\u304c\u771f\u3067\u3042\u308c\u3070\u3001\u305d\u308c\u306b\u7d9a\u304f\u30b3\u30fc\u30c9\u30d6\u30ed\u30c3\u30af\u304c\u5b9f\u884c\u3055\u308c\u3001\u518d\u3073\u6761\u4ef6\u4ed8\u304d\u69cb\u9020\u304b\u3089\u629c\u3051\u307e\u3059\u3002\u3053\u306e\u5834\u5408\u30016\u884c\u76ee\u306e\u6587\u304c\u305d\u308c\u3067\u3042\u308a\u3001y\u306fx\u3088\u308a\u5927\u304d\u3044\u3068\u51fa\u529b\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>7\u884c\u76ee\u306b\u306f\u3082\u30461\u3064\u306eelse if\u306e\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u5834\u5408\u3001\u62ec\u5f27\u306e\u4e2d\u3067x\u304cy\u3068\u7b49\u3057\u3044\u304b\u3069\u3046\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3059\u3002\u3082\u3057\u771f\u3067\u3042\u308c\u3070\u30018\u884c\u76ee\u306e\u6587\u304c\u5b9f\u884c\u3055\u308c\u3001x\u306fy\u3068\u7b49\u3057\u3044\u3068\u8868\u793a\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306aelse if\u6587\u306f\u3001\u6761\u4ef6\u3092\u8a55\u4fa1\u3057\u3001\u7121\u5236\u9650\u306b\u8ffd\u52a0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>9\u884c\u76ee\u306b\u306f\u6700\u5f8c\u306eelse\u6587\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u6587\u306f\u5e38\u306b\u6700\u5f8c\u306b\u3042\u308a\u3001\u6761\u4ef6\u3092\u6301\u305f\u306a\u3044\u305f\u3081\u3001\u4ed6\u306e\u6761\u4ef6\u6587\u304c\u4e00\u3064\u3082\u30de\u30c3\u30c1\u3057\u306a\u3044\u5834\u5408\u306b\u306f\u5fc5\u305a\u3053\u306e\u6587\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002\u3064\u307e\u308a\u3001else\u306e\u5f8c\u306b\u3042\u308b\u30b3\u30fc\u30c9\u30d6\u30ed\u30c3\u30af\u306f\u3001\u4ee5\u524d\u306bif\u6587\u3084else if\u6587\u306e\u6761\u4ef6\u304c\u4e00\u3064\u3082\u6e80\u305f\u3055\u308c\u306a\u304b\u3063\u305f\u5834\u5408\u306b\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002\u3082\u3057\u3053\u306e\u6587\u304c\u771f\u3067\u3042\u308b\u306a\u3089\u300110\u884c\u76ee\u306e\u30b3\u30fc\u30c9\u304c\u5b9f\u884c\u3055\u308c\u3001x\u306fy\u3068\u6bd4\u8f03\u3067\u304d\u306a\u3044\u3068\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u8907\u96d1\u306a\u6761\u4ef6\u6587\u3067\u306f\u6700\u521d\u306e if \u6587\u3060\u3051\u304c\u5fc5\u8981\u3067\u3059\u3002\u8ffd\u52a0\u306e\u6bd4\u8f03\u3092\u884c\u3044\u305f\u3044\u5834\u5408\u306f\u3001\u30bc\u30ed\u500b\u4ee5\u4e0a\u306e else if \u6587\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002\u6700\u5f8c\u306b\u3001\u4ed6\u306e\u6761\u4ef6\u6587\u306b\u4e00\u81f4\u3057\u306a\u304b\u3063\u305f\u5834\u5408\u306b\u30de\u30c3\u30c1\u3059\u308b\u30aa\u30d7\u30b7\u30e7\u30f3\u306e else \u6587\u3092\u7f6e\u304f\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u3092jshell\u3067\u5b9f\u884c\u3059\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u51fa\u529b\u304c\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>x ==&gt; 1 y ==&gt; 0 1 is bigger than 0<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u4e0a\u8a18\u306e\u51fa\u529b\u304b\u3089\u3001\u6700\u521d\u306e\u884c\u30682\u884c\u76ee\u306fx\u3068y\u306e\u5024\u3092\u78ba\u8a8d\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u5024\u306f\u3001\u305d\u308c\u305e\u308c1\u30680\u3067\u3059\u30023\u884c\u76ee\u3067\u306f\u30011\u304c0\u3088\u308a\u5927\u304d\u3044\u3068\u51fa\u529b\u3055\u308c\u3066\u304a\u308a\u3001\u3053\u308c\u306b\u3088\u3063\u3066\u8ad6\u7406\u5f0f\uff08x &gt; y\uff09\u304ctrue\u3092\u8fd4\u3057\u3001\u305d\u306e\u5f8c\u306e\u30d6\u30ed\u30c3\u30af\u30b3\u30fc\u30c9\u304c\u5b9f\u884c\u3055\u308c\u305f\u3053\u3068\u304c\u78ba\u8a8d\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>if\u3068else if\u3001else\u306e\u6587\u3092\u66f8\u304f\u3053\u3068\u306f\u3001\u8907\u96d1\u306a\u6761\u4ef6\u69cb\u9020\u3092\u66f8\u304f\u826f\u3044\u65b9\u6cd5\u3067\u3059\u3002\u306a\u305c\u306a\u3089\u3001\u305d\u308c\u305e\u308c\u306eif\u6587\u3084else if\u6587\u306b\u7570\u306a\u308b\u6761\u4ef6\u3092\u7f6e\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4e0a\u8a18\u306e\u4f8b\u3067\u306f\u3001\u6700\u521d\u306bx &gt; y\u3092\u6bd4\u8f03\u3057\u3001\u305d\u306e\u5f8cx &lt; y\u306e\u9006\u3092\u6bd4\u8f03\u3057\u3001\u6700\u5f8c\u306bx == y\u3092\u6bd4\u8f03\u3057\u307e\u3057\u305f\u3002\u3053\u306e\u30b3\u30fc\u30c9\u306f\u3001\u6bd4\u8f03\u304c\u308f\u305a\u304b\u306a\u5834\u5408\u3067\u3082\u8aad\u307f\u3084\u3059\u304f\u7ba1\u7406\u3057\u3084\u3059\u3044\u3067\u3059\u3002<\/p>\n<p>\u3057\u304b\u3057\u3001\u3055\u3089\u306b\u6bd4\u8f03\u3092\u884c\u3046\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u306f\u3001\u3082\u3063\u3068\u591a\u304f\u306eelse if\u6587\u3092\u8ffd\u52a0\u3059\u308b\u3068\u3001\u30b3\u30fc\u30c9\u304c\u8ffd\u3044\u306b\u304f\u304f\u306a\u308a\u3001\u6df7\u4e71\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u53ef\u80fd\u306a\u9650\u308a\u69cb\u9020\u3092\u5c0f\u3055\u304f\u5358\u7d14\u306b\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u3055\u3089\u306b\u3001\u4e00\u90e8\u306e\u5834\u5408\u3067\u306f\u3001\u30b9\u30a4\u30c3\u30c1\u6587\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u305d\u306e\u3088\u3046\u306a\u8907\u96d1\u306a\u69cb\u9020\u306e\u4ee3\u66ff\u624b\u6bb5\u304c\u5b58\u5728\u3057\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<h2>\u30b9\u30a4\u30c3\u30c1\u6761\u4ef6\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b<\/h2>\n<p>\u30b9\u30a4\u30c3\u30c1\u6587\u306f\u3001\u610f\u601d\u6c7a\u5b9a\u69cb\u9020\u3092\u69cb\u7bc9\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3067\u304d\u308b\u5225\u306e\u6761\u4ef6\u6587\u3067\u3059\u3002\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u30d5\u30ed\u30fc\u3092\u6761\u4ef6\u306b\u57fa\u3065\u3044\u3066\u5236\u5fa1\u3059\u308b\u305f\u3081\u3001if\u6587\u3068\u4f3c\u3066\u3044\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u30b9\u30a4\u30c3\u30c1\u6587\u306f\u5358\u4e00\u306e\u5909\u6570\u3068\u7570\u306a\u308b\u4e88\u3081\u5b9a\u7fa9\u3055\u308c\u305f\u30b1\u30fc\u30b9\u3068\u306e\u4e00\u81f4\u3092\u53d6\u308a\u6271\u3044\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001x &gt; y\u306e\u3088\u3046\u306a\u30d6\u30fc\u30eb\u5f0f\u3092\u8a55\u4fa1\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u4ee3\u308f\u308a\u306b\u3001\u4f8b\u3048\u3070int\u5909\u6570\u3068\u305d\u306e\u5024\u3092\u4ed6\u306eint\u5909\u6570\u3068\u6bd4\u8f03\u3057\u3066\u4e00\u81f4\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3057\u307e\u3059\u3002\u4e00\u81f4\uff08\u3064\u307e\u308a\u3001\u30b1\u30fc\u30b9\uff09\u304c\u3042\u308b\u5834\u5408\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u30d5\u30ed\u30fc\u306f\u4e00\u81f4\u306b\u57fa\u3065\u3044\u3066\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u30b9\u30a4\u30c3\u30c1\u6761\u4ef6\u306b\u306f2\u3064\u306e\u91cd\u8981\u306a\u30eb\u30fc\u30eb\u304c\u3042\u308a\u307e\u3059\u30021\u3064\u76ee\u306f\u3001\u6bd4\u8f03\u3055\u308c\u308b\u5909\u6570\u304c\u7279\u5b9a\u306e\u30c7\u30fc\u30bf\u578b\u306e\u307f\u3067\u3042\u308b\u3053\u3068\u3067\u3059\u3002\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u306a\u578b\u3067\u3042\u308bint\u3084char\u3001\u304a\u3088\u3073\u53c2\u7167\u578b\u3067\u3042\u308bString\u3084Integer\u306a\u3069\u304c\u8a72\u5f53\u3057\u307e\u3059\u3002\uff08\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u308b\u30c7\u30fc\u30bf\u578b\u306e\u5b8c\u5168\u306a\u30ea\u30b9\u30c8\u306f\u516c\u5f0f\u306e\u30b9\u30a4\u30c3\u30c1\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3067\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002\uff09\u3057\u305f\u304c\u3063\u3066\u3001boolean\u578b\u306e\u5909\u6570\u306f\u4f7f\u7528\u3067\u304d\u305a\u3001\u30b9\u30a4\u30c3\u30c1\u6761\u4ef6\u306fif\u6761\u4ef6\u306e\u4ee3\u308f\u308a\u306b\u306f\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u3082\u3046\u4e00\u3064\u306e\u91cd\u8981\u306a\u30eb\u30fc\u30eb\u306f\u3001case\u6587\u306e\u5024\u306f\u30ea\u30c6\u30e9\u30eb\u307e\u305f\u306f\u5b9a\u6570\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\u5b9a\u6570\u306f\u5909\u6570\u306b\u4f3c\u3066\u3044\u307e\u3059\u304c\u3001\u5b9a\u7fa9\u3055\u308c\u308b\u3068\u304d\u306b\u524d\u306bfinal\u30ad\u30fc\u30ef\u30fc\u30c9\u304c\u4ed8\u3044\u3066\u3044\u307e\u3059\u3002\u5909\u6570\u3068\u306f\u7570\u306a\u308a\u3001\u5b9a\u6570\u306e\u5024\u3092\u5b9a\u7fa9\u3057\u305f\u5f8c\u306f\u5909\u66f4\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u5b9a\u6570\u306b\u3064\u3044\u3066\u306f\u3001\u79c1\u305f\u3061\u306eJava\u30b7\u30ea\u30fc\u30ba\u306e\u5c06\u6765\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3067\u8a73\u3057\u304f\u8aac\u660e\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u30b9\u30a4\u30c3\u30c1\u306fif\u69cb\u6587\u306b\u6bd4\u3079\u3066\u5236\u9650\u304c\u591a\u3044\u3057\u3001\u5b8c\u5168\u306b\u4ee3\u66ff\u3068\u306f\u306a\u308a\u307e\u305b\u3093\u3002\u305d\u308c\u3067\u3082\u3001\u53ef\u8aad\u6027\u304c\u9ad8\u304f\u3001\u6bd4\u8f03\u304c\u591a\u3044\u5834\u5408\u306b\u306f\u3088\u308a\u9069\u3057\u3066\u3044\u308b\u3068\u3044\u3046\u30e6\u30cb\u30fc\u30af\u306a\u5229\u70b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u305f\u3068\u3048\u3070\u3001\u5404\u6708\u306e\u6570\u5024\u8868\u73fe\uff081\u304b\u308912\u307e\u3067\uff09\u3092\u6708\u306e\u540d\u524d\u3068\u4e00\u81f4\u3055\u305b\u305f\u3044\u3068\u60f3\u50cf\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002if-else if\u69cb\u9020\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u3001\u985e\u4f3c\u3057\u305f12\u500b\u306e\u6bd4\u8f03\u3092\u884c\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3057\u304b\u3057\u3001switch\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30b3\u30fc\u30c9\u3092\u7e70\u308a\u8fd4\u3059\u3053\u3068\u306a\u304f\u3088\u308a\u7c21\u6f54\u306b\u51e6\u7406\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u6708\u306e\u30b9\u30a4\u30c3\u30c1\u6761\u4ef6\u3092\u4f7f\u3063\u305f\u69cb\u6587\u306e\u7df4\u7fd2\u3092\u3059\u308b\u305f\u3081\u306b\u3001\u4ee5\u4e0b\u306e\u884c\u3092jshell\u306b\u8ffd\u52a0\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u5e74\u306e\u6708\u3092\u6570\u5b57\u3067\u8868\u3059int\u5909\u6570\u3068\u3001\u5404\u6708\u306e\u540d\u524d\u306b\u5bfe\u5fdc\u3059\u308bcase\u6587\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"1\"><span class=\"token keyword\">int<\/span> monthOfYear <span class=\"token operator\">=<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><\/li>\n<li data-prefix=\"2\"><mark><span class=\"token keyword\">switch<\/span> <span class=\"token punctuation\">(<\/span>monthOfYear<span class=\"token punctuation\">)<\/span><\/mark> <span class=\"token punctuation\">{<\/span><\/li>\n<li data-prefix=\"3\"><mark><span class=\"token keyword\">case<\/span> <span class=\"token number\">1<\/span><\/mark><span class=\"token operator\">:<\/span><\/li>\n<li data-prefix=\"4\"><span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#8220;January&#8221;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/li>\n<li data-prefix=\"5\"><mark><span class=\"token keyword\">break<\/span><\/mark><span class=\"token punctuation\">;<\/span><\/li>\n<li data-prefix=\"6\"><mark><span class=\"token keyword\">case<\/span> <span class=\"token number\">2<\/span><\/mark><span class=\"token operator\">:<\/span><\/li>\n<li data-prefix=\"7\"><span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#8220;February&#8221;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/li>\n<li data-prefix=\"8\"><mark><span class=\"token keyword\">break<\/span><\/mark><span class=\"token punctuation\">;<\/span><\/li>\n<li data-prefix=\"9\"><mark><span class=\"token keyword\">default<\/span><\/mark><span class=\"token operator\">:<\/span><\/li>\n<li data-prefix=\"10\"><span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#8220;Not a month&#8221;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/li>\n<li data-prefix=\"11\"><span class=\"token punctuation\">}<\/span><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>1\u884c\u76ee\u306b\u306f\u3001\u5024\u304c1\u306e\u5909\u6570monthOfYear\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u5909\u6570\u306fswitch\u6587\u3067\u4f7f\u7528\u3055\u308c\u307e\u3059\u30022\u884c\u76ee\u306b\u306f\u3001switch\u6587\u306e\u5b9a\u7fa9\u304c\u3042\u308a\u307e\u3059\u3002\u5909\u6570monthOfYear\u306f\u304b\u3063\u3053\u5185\u306b\u914d\u7f6e\u3055\u308c\u3001\u6bd4\u8f03\u3055\u308c\u308b\u3053\u3068\u304c\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001\u3055\u307e\u3056\u307e\u306acase\u6761\u4ef6\u304c\u8a18\u8ff0\u3055\u308c\u305f\u30b3\u30fc\u30c9\u30d6\u30ed\u30c3\u30af\u304c\u59cb\u307e\u308a\u307e\u3059\u3002<\/p>\n<p>3\u884c\u76ee\u306b\u3001\u5024\u304c1\u3067\u3042\u308b\u6700\u521d\u306e\u30b1\u30fc\u30b9\u304c\u6765\u307e\u3059\u3002\u6700\u521d\u306e\u6bd4\u8f03\u306f\u3001monthOfYear\u304c1\u3068\u7b49\u3057\u3044\u304b\u3069\u3046\u304b\u3067\u3059\u3002\u6bd4\u8f03\u3055\u308c\u305f\u5024\u306e\u5f8c\u306b\u306f\u5fc5\u305a\u30b3\u30ed\u30f3\uff08:\uff09\u304c\u7d9a\u304d\u307e\u3059\u30024\u884c\u76ee\u306b\u306f\u3001println\uff08\uff09\u30e1\u30bd\u30c3\u30c9\u304c\u6765\u3066\u30011\u304c\u30de\u30c3\u30c1\u3057\u305f\u5834\u5408\u306b\u3001\u6708\u306e\u540d\u524d\u3068\u3057\u3066\u300cJanuary\u300d\u3092\u51fa\u529b\u3059\u308b\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002\u3053\u306e\u884c\u306f\u30010\u4ee5\u4e0a\u306e\u6587\u307e\u305f\u306f0\u884c\u4ee5\u4e0a\u306e\u6587\u3067\u69cb\u6210\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u7701\u7565\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u6700\u521d\u306e\u30b1\u30fc\u30b9\u306e\u5f8c\u306b\u306f\u30015\u884c\u76ee\u306b\u304a\u3044\u3066\u30d6\u30ec\u30fc\u30af\u6587\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u30d6\u30ec\u30fc\u30af\u6587\u306b\u3088\u3063\u3066\u3001\u6761\u4ef6\u304c\u6e80\u305f\u3055\u308c\u308b\u3068\u30b9\u30a4\u30c3\u30c1\u6761\u4ef6\u69cb\u9020\u304b\u3089\u629c\u3051\u51fa\u3057\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u30d6\u30ec\u30fc\u30af\u304c\u5b9f\u884c\u3055\u308c\u308b\u3068\u3001\u4ed6\u306e\u3069\u306e\u30b1\u30fc\u30b9\u6761\u4ef6\u3082\u8a55\u4fa1\u3055\u308c\u307e\u305b\u3093\u3002\u4ee3\u308f\u308a\u306b\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u6d41\u308c\u306f\u30b9\u30a4\u30c3\u30c1\u6761\u4ef6\u306e\u7d42\u308f\u308a\u306e\u62ec\u5f27\u306e\u5f8c\u3001\u3053\u306e\u4f8b\u3067\u306f11\u884c\u76ee\u306b\u7d9a\u304d\u307e\u3059\u3002\u30d6\u30ec\u30fc\u30af\u306f\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u3059\u306e\u3067\u3001\u5fd8\u308c\u3066\u3057\u307e\u3046\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u5834\u5408\u3001\u4e00\u81f4\u3059\u308b\u30b1\u30fc\u30b9\u304c\u3042\u3063\u3066\u3082\u3001\u30b9\u30a4\u30c3\u30c1\u306f\u6761\u4ef6\u69cb\u9020\u304b\u3089\u629c\u3051\u51fa\u3059\u3053\u3068\u306a\u304f\u3001\u6b8b\u308a\u306e\u30b1\u30fc\u30b9\u306e\u8a55\u4fa1\u3092\u7d9a\u3051\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u3063\u3066\u4e88\u671f\u3057\u306a\u3044\u51fa\u529b\u3084\u30c7\u30d0\u30c3\u30b0\u304c\u96e3\u3057\u3044\u554f\u984c\u304c\u5f15\u304d\u8d77\u3053\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u6b21\u306e\u5834\u5408\u306e\u6761\u4ef6\u306f\u30016\u884c\u76ee\u30017\u884c\u76ee\u3001\u304a\u3088\u30738\u884c\u76ee\u306b\u3042\u308a\u3001monthOfYear\u306e\u5024\u304c2\u3068\u4e00\u81f4\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u3053\u308c\u30893\u884c\u306f\u3001\u524d\u306e3\u884c\u3068\u540c\u3058\u69cb\u6587\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u304c\u30017\u884c\u76ee\u3067\u306f\u300c2\u6708\u300d\u306e\u65b0\u3057\u3044\u6587\u5b57\u5217\u304c\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u7c21\u6f54\u306b\u3059\u308b\u305f\u3081\u3001\u6b8b\u308a\u306e10\u30f6\u6708\u306e\u5834\u5408\u306e\u6761\u4ef6\u306f\u7701\u7565\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u305d\u308c\u3089\u3082\u5404\u6708\u306e\u540d\u524d\u306b\u65b0\u3057\u3044\u6587\u5b57\u5217\u3092\u4f7f\u7528\u3057\u3066\u540c\u3058\u69cb\u9020\u306b\u5f93\u3044\u307e\u3059\u3002<\/p>\n<p>9\u884c\u76ee\u306b\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002\u6761\u4ef6\u304c\u306a\u3044\u305f\u3081\u3001\u5e38\u306b\u30de\u30c3\u30c1\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u3042\u308a\u3001\u4ee5\u524d\u306b\u30ea\u30b9\u30c8\u3055\u308c\u305f\u30b1\u30fc\u30b9\u306b\u30de\u30c3\u30c1\u3057\u306a\u3044\u5834\u5408\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u6d41\u308c\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u30d1\u30b9\u3092\u5b9a\u7fa9\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306f\u3001if\u6761\u4ef6\u6587\u306eelse\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306b\u4f3c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>11\u884c\u76ee\u306b\u306f\u3001\u6761\u4ef6\u6587\u306e\u30d6\u30ed\u30c3\u30af\u3092\u7d42\u4e86\u3059\u308b\u305f\u3081\u306e\u9589\u3058\u62ec\u5f27\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3059\u308b\u306b\u306f\u3001jshell\u306b\u8cbc\u308a\u4ed8\u3051\u3066\u304f\u3060\u3055\u3044\u3002\u6b21\u306e\u51fa\u529b\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>monthOfYear ==&gt; 1 January<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u6700\u521d\u306e\u884c\u306f\u3001monthOfYear\u306e\u5024\u304c1\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u3044\u307e\u3059\u30022\u884c\u76ee\u306f\u300cJanuary\u300d\u3068\u51fa\u529b\u3059\u308b\u305f\u3081\u3001\u50241\u306e\u5834\u5408\u306b\u4e00\u81f4\u3059\u308b\u6761\u4ef6\u5206\u5c90\u304c\u884c\u308f\u308c\u3066\u3044\u307e\u3059\u3002\u3064\u307e\u308a\u3001monthOfYear\u304c1\u3067\u3042\u308b\u305f\u3081\u3001\u6b21\u306e\u884c\u306e\u6587\u304c\u5b9f\u884c\u3055\u308c\u3066\u300cJanuary\u300d\u304c\u51fa\u529b\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u7df4\u7fd2\u3068\u3057\u3066\u3001monthOfYear\u306e\u5024\u3092\u5909\u66f4\u3057\u305f\u308a\u3001\u3082\u3063\u3068\u6761\u4ef6\u3092\u8ffd\u52a0\u3057\u305f\u308a\u3001\u30d6\u30ec\u30fc\u30af\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u524a\u9664\u3057\u3066\u7d50\u679c\u304c\u3069\u306e\u3088\u3046\u306b\u5909\u308f\u308b\u304b\u3092\u7406\u89e3\u3059\u308b\u3088\u3046\u306b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h2>\u7d50\u8ad6<\/h2>\n<p>\u3053\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3067\u306f\u3001\u6761\u4ef6\u6587\u3092\u4f7f\u7528\u3057\u3066\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u5b9f\u884c\u30d5\u30ed\u30fc\u3092\u5236\u5fa1\u3057\u307e\u3057\u305f\u3002if\u6587\u3068switch\u6587\u3092\u3069\u3093\u306a\u5834\u9762\u3067\u9069\u5207\u306b\u4f7f\u7528\u3059\u308b\u3079\u304d\u304b\u3092\u5b66\u3073\u3001\u305d\u308c\u3089\u3092\u4f7f\u3063\u305f\u3044\u304f\u3064\u304b\u306e\u30b3\u30fc\u30c9\u4f8b\u3082\u4f5c\u6210\u3057\u307e\u3057\u305f\u3002\u307e\u305f\u3001\u30af\u30ea\u30fc\u30f3\u306a\u30b3\u30fc\u30c9\u306e\u305f\u3081\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3084\u3001\u6761\u4ef6\u6587\u306b\u95a2\u9023\u3059\u308b\u4e00\u822c\u7684\u306a\u554f\u984c\u3092\u907f\u3051\u308b\u65b9\u6cd5\u3082\u5b66\u3073\u307e\u3057\u305f\u3002<\/p>\n<p>Java\u306b\u95a2\u3059\u308b\u8a73\u7d30\u306f\u3001\u79c1\u305f\u3061\u306e\u300cJava\u3067\u306e\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u65b9\u6cd5\u300d\u30b7\u30ea\u30fc\u30ba\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8457\u8005\u306f\u3001\u66f8\u304f\u3053\u3068\u3067\u5bc4\u4ed8\u91d1\u3092\u96c6\u3081\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u4e00\u74b0\u3068\u3057\u3066\u3001\u30d5\u30ea\u30fc\uff06\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u57fa\u91d1\u306b\u5bc4\u4ed8\u3059\u308b\u3053\u3068\u3092\u9078\u3073\u307e\u3057\u305f\u3002 \u306f\u3058\u3081\u306b \u6761\u4ef6\u6587\u306f\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u6d41\u308c\u3092\u5909\u3048\u307e\u3059\u3002\u6761\u4ef6\u6587\u306f\u5206\u5c90\u6587\u3068\u3082\u547c\u3070\u308c\u307e\u3059\u3002\u6761\u4ef6\u304c\u4e00\u81f4\u3059\u308b\u3068\u3001\u30b3\u30fc\u30c9\u306e\u4e2d\u306e\u4e00 [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-136","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Java\u3067\u6761\u4ef6\u6587\u3092\u66f8\u304f\u65b9\u6cd5 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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