{"id":31396,"date":"2023-01-06T13:46:16","date_gmt":"2022-10-30T12:48:48","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/java-%e7%9a%84%e8%be%93%e5%87%ba%e6%9d%a1%e4%bb%b6%e5%88%86%e6%94%af\/"},"modified":"2025-08-12T23:49:42","modified_gmt":"2025-08-12T15:49:42","slug":"java-%e7%9a%84%e8%be%93%e5%87%ba%e6%9d%a1%e4%bb%b6%e5%88%86%e6%94%af","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/java-%e7%9a%84%e8%be%93%e5%87%ba%e6%9d%a1%e4%bb%b6%e5%88%86%e6%94%af\/","title":{"rendered":"Java \u7684\u8f93\u51fa\u6761\u4ef6\u5206\u652f"},"content":{"rendered":"<h1>\u8ba9\u6211\u4eec\u5c1d\u8bd5\u4f7f\u7528 if \u8bed\u53e5<\/h1>\n<pre class=\"post-pre\"><code><span class=\"kd\">class<\/span> <span class=\"nc\">Main<\/span> <span class=\"o\">{<\/span>\r\n  <span class=\"kd\">public<\/span> <span class=\"kd\">static<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">main<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span><span class=\"o\">[]<\/span> <span class=\"n\">args<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"kt\">int<\/span> <span class=\"n\">value<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">3<\/span><span class=\"o\">;<\/span>\r\n\r\n    <span class=\"k\">if<\/span> <span class=\"o\">(<\/span><span class=\"n\">value<\/span> <span class=\"o\">&gt;<\/span> <span class=\"mi\">0<\/span><span class=\"o\">){<\/span>\r\n      <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"s\">\"\u5024\u306f\u6b63\u3067\u3059\"<\/span><span class=\"o\">);<\/span> \r\n    <span class=\"o\">}<\/span>\r\n  <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u5f53\u4f60\u5199\u5b8c\u63cf\u8ff0\u4e4b\u540e\uff0c\u6211\u4eec\u6765\u6267\u884c\u4ee3\u7801\u3002<br \/>\n\u4f1a\u8f93\u51fa&#8221;\u503c\u662f\u6b63\u7684&#8221;\u3002<\/p>\n<h1>\u8bd5\u7740\u7406\u89e3\u5982\u4f55\u4f7f\u7528if\u8bed\u53e5<\/h1>\n<p>if\u8bed\u53e5\u7684\u63cf\u8ff0\u5982\u4e0b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">if<\/span> <span class=\"o\">(<\/span> <span class=\"n\">\u6761\u4ef6\u5f0f<\/span> <span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n  <span class=\"n\">\u6761\u4ef6\u5f0f\u3092\u6e80\u305f\u3059\u6642\u306b\u5b9f\u884c\u3059\u308b\u51e6\u7406<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u4ee5\u4e0b\u662f\u4e0eRuby\u7f16\u5199\u65b9\u5f0f\u4e0d\u540c\u7684\u51e0\u4e2a\u65b9\u9762\u3002<\/p>\n<p>\u30fb\u5728\u6761\u4ef6\u8bed\u53e5\u4e2d\u8981\u7528\uff08\uff09\u62ec\u8d77\u6765<br \/>\n\u30fb\u5728\u60f3\u8981\u6267\u884c\u7684\u64cd\u4f5c\u4e2d\u8981\u7528{}\u62ec\u8d77\u6765<\/p>\n<p>\u5173\u4e8e\u6307\u5b9a\u66f4\u7ec6\u5fae\u6761\u4ef6\u7684else\u548celsif\uff0cRuby\u548cJava\u4e4b\u95f4\u6ca1\u6709\u5927\u7684\u533a\u522b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">class<\/span> <span class=\"nc\">Main<\/span> <span class=\"o\">{<\/span>\r\n  <span class=\"kd\">public<\/span> <span class=\"kd\">static<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">main<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span><span class=\"o\">[]<\/span> <span class=\"n\">args<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"kt\">int<\/span> <span class=\"n\">value<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">3<\/span><span class=\"o\">;<\/span>\r\n\r\n    <span class=\"k\">if<\/span> <span class=\"o\">(<\/span><span class=\"n\">value<\/span> <span class=\"o\">&gt;<\/span> <span class=\"mi\">0<\/span><span class=\"o\">){<\/span>\r\n      <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"s\">\"\u5024\u306f\u6b63\u3067\u3059\"<\/span><span class=\"o\">);<\/span> \r\n    <span class=\"o\">}<\/span><span class=\"k\">else<\/span> <span class=\"k\">if<\/span> <span class=\"o\">(<\/span><span class=\"n\">value<\/span> <span class=\"o\">&lt;<\/span> <span class=\"mi\">0<\/span><span class=\"o\">){<\/span>\r\n      <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"s\">\"\u5024\u306f\u8ca0\u3067\u3059\"<\/span><span class=\"o\">);<\/span> \r\n    <span class=\"o\">}<\/span><span class=\"k\">else<\/span> <span class=\"o\">{<\/span>\r\n      <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"s\">\"\u5024\u306f0\u3067\u3059\"<\/span><span class=\"o\">);<\/span> \r\n    <span class=\"o\">}<\/span>\r\n  <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u57fa\u672c\u4e0a\u4f7f\u7528\u65b9\u5f0f\u76f8\u540c\uff0c\u5982\u4e0b\u6240\u8ff0\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">if<\/span> <span class=\"o\">(<\/span><span class=\"n\">\u6761\u4ef6A<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span> \r\n  <span class=\"c1\">\/\/ \u51e6\u7406A<\/span>\r\n<span class=\"o\">}<\/span> <span class=\"k\">else<\/span> <span class=\"k\">if<\/span> <span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n  <span class=\"c1\">\/\/ \u51e6\u7406B<\/span>\r\n<span class=\"o\">}<\/span> <span class=\"k\">else<\/span> <span class=\"o\">{<\/span>\r\n  <span class=\"c1\">\/\/ \u51e6\u7406C<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u6839\u636e\u662f\u5426\u6ee1\u8db3\u6761\u4ef6\uff0c\u5c06\u8fdb\u884c\u5206\u652f\u5224\u65ad\uff0c\u5e76\u6267\u884c\u4ee5\u4e0b\u64cd\u4f5c\u3002<\/p>\n<p>\u5982\u679c\u6761\u4ef6A\u4e3a\u771f\uff0c\u5219\u6267\u884c\u5904\u7406A\u3002<br \/>\n\u5982\u679c\u6761\u4ef6A\u4e3a\u5047\u4e14\u6761\u4ef6B\u4e3a\u771f\uff0c\u5219\u6267\u884c\u5904\u7406B\u3002<br \/>\n\u5982\u679c\u6240\u6709\u6761\u4ef6\u90fd\u4e3a\u5047\uff0c\u5219\u6267\u884c\u5904\u7406C\u3002<br \/>\n\u5904\u7406\u6d41\u7a0b\u4e0eRuby\u76f8\u540c\uff0c\u4f46\u9700\u8981\u6ce8\u610f\u5728Java\u4e2d\u4f7f\u7528&#8221;else if&#8221;\u6765\u8868\u793a&#8221;elsif&#8221;\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8ba9\u6211\u4eec\u5c1d\u8bd5\u4f7f\u7528 if \u8bed\u53e5 class Main { public static void main(Stri [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-31396","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"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 \u7684\u8f93\u51fa\u6761\u4ef6\u5206\u652f - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8eJava \u7684\u8f93\u51fa\u6761\u4ef6\u5206\u652f\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/java-\u7684\u8f93\u51fa\u6761\u4ef6\u5206\u652f\/\" \/>\n<meta property=\"og:locale\" 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