{"id":255433,"date":"2016-03-24T05:07:15","date_gmt":"2016-03-23T21:07:15","guid":{"rendered":"http:\/\/blog.zhenglei.net\/?p=255433"},"modified":"2016-03-24T05:07:15","modified_gmt":"2016-03-23T21:07:15","slug":"java%e6%9d%a1%e4%bb%b6%e7%bc%96%e8%af%91","status":"publish","type":"post","link":"https:\/\/blog.zhenglei.net\/?p=255433","title":{"rendered":"Java\u6761\u4ef6\u7f16\u8bd1"},"content":{"rendered":"<p><a href=\"http:\/\/www.mamicode.com\/info-detail-650763.html\">http:\/\/www.mamicode.com\/info-detail-650763.html<\/a><\/p>\n<p>&nbsp;<\/p>\n<p>\u5b66\u4e60\u8fc7C\u8bed\u8a00\u6216\u8005C++\u8bed\u8a00\u7684\u540c\u5b66\u90fd\u77e5\u9053\u5b83\u4eec\u652f\u6301\u6761\u4ef6\u7f16\u8bd1\uff0c\u90a3\u4e48\u4eca\u5929\u6211\u4eec\u6765\u5b66\u4e60\u4e0b\u5728Java\u8bed\u8a00\u4e2d\u5982\u4f55\u5b9e\u73b0\u6761\u4ef6\u7f16\u8bd1\u3002Java\u8bed\u8a00\u672c\u8eab\u6ca1\u6709\u63d0\u4f9b\u6761\u4ef6\u7f16\u8bd1\uff0c\u4f46\u662fJava\u7f16\u8bd1\u5668\u5bf9.java\u6587\u4ef6\u7f16\u8bd1\u4e3a.class\u6587\u4ef6\u505a\u4e86\u4f18\u5316\uff0c\u4e0b\u9762\u901a\u8fc7\u4e00\u4e2a\u4f8b\u5b50\u7ed9\u5927\u5bb6\u8be6\u7ec6\u8bb2\u89e3\u3002<\/p>\n<p>\u4e0b\u9762\u5148\u7ed9\u51faHelloWorld.java\u6587\u4ef6\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<pre> 1 package com.test;\r\n 2 \r\n 3 \/**\r\n 4  * Test Demo\r\n 5  *\/\r\n 6 public class HelloWorld {\r\n 7 \r\n 8     public static void main(String[] args) {\r\n 9         if (BuildConfig.FLAG) {\r\n10             System.out.println(\"Hello World\");\r\n11         } else {\r\n12             System.out.println(\"Java\u6761\u4ef6\u7f16\u8bd1\u6d4b\u8bd5\");\r\n13         }\r\n14     }\r\n15 \r\n16 }<\/pre>\n<\/div>\n<p>\u518d\u6765\u770b\u770bBuildConfig.java\u6587\u4ef6\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<pre>package com.test;\r\n\r\n\/**\r\n * Created by Administrator on 2015\/5\/24.\r\n *\/\r\npublic final class BuildConfig {\r\n\r\n    public static final boolean FLAG = false;\r\n}<\/pre>\n<\/div>\n<p>&nbsp;<\/p>\n<p>\u518d\u6765\u770b\u770b\u8be5.java\u6587\u4ef6\u88ab\u8f6c\u5316\u4e3a.class\u6587\u4ef6\u7684\u5185\u5bb9\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<pre>\/\/\r\n\/\/ Source code recreated from a .class file by IntelliJ IDEA\r\n\/\/ (powered by Fernflower decompiler)\r\n\/\/\r\n\r\npackage com.test;\r\n\r\npublic class HelloWorld {\r\n    public HelloWorld() {\r\n    }\r\n\r\n    public static void main(String[] args) {\r\n        System.out.println(\"Java\u6761\u4ef6\u7f16\u8bd1\u6d4b\u8bd5\");\r\n    }\r\n}<\/pre>\n<\/div>\n<p>\u53ef\u4ee5\u77e5\u9053\u7684\u662fBuildConfig.FLAG\u6c38\u8fdc\u90fd\u4e3afalse\uff0cif\u5757\u5185\u7684\u4ee3\u7801\u5f53\u7136\u4e5f\u4e0d\u4f1a\u88ab\u6267\u884c\uff0c\u8fd9\u90e8\u5206\u4ee3\u7801\u5c31\u4e0d\u4f1a\u88ab\u7f16\u8bd1\u5230.class\u6587\u4ef6\u4e2d\u3002<\/p>\n<p>\u5982\u679cFLAG\u662f\u5b57\u7b26\u4e32\u4f1a\u600e\u4e48\u6837\uff1f\u5b57\u7b26\u4e32\u4e4b\u95f4\u5982\u679c\u4f7f\u7528equals\u8fdb\u884c\u6bd4\u8f83\uff0c\u5728\u8f6c\u5316\u4e3a.class\u6587\u4ef6\u65f6\u4e0d\u4f1a\u5f97\u5230\u4f18\u5316\u3002<\/p>\n<p>HelloWorld.java\u6587\u4ef6\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<pre>package com.test;\r\n\r\n\/**\r\n * Test Demo\r\n *\/\r\npublic class HelloWorld {\r\n\r\n    public static void main(String[] args) {\r\n        if (BuildConfig.FLAG.equals(\"false\")) {\r\n            System.out.println(\"Hello World\");\r\n        } else {\r\n            System.out.println(\"Java\u6761\u4ef6\u7f16\u8bd1\u6d4b\u8bd5\");\r\n        }\r\n    }\r\n\r\n}<\/pre>\n<\/div>\n<p>HelloWorld.class\u6587\u4ef6\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<pre>\/\/\r\n\/\/ Source code recreated from a .class file by IntelliJ IDEA\r\n\/\/ (powered by Fernflower decompiler)\r\n\/\/\r\n\r\npackage com.test;\r\n\r\npublic class HelloWorld {\r\n    public HelloWorld() {\r\n    }\r\n\r\n    public static void main(String[] args) {\r\n        if(\"false\".equals(\"false\")) {\r\n            System.out.println(\"Hello World\");\r\n        } else {\r\n            System.out.println(\"Java\u6761\u4ef6\u7f16\u8bd1\u6d4b\u8bd5\");\r\n        }\r\n\r\n    }\r\n}<\/pre>\n<\/div>\n<p>\u5982\u679c\u771f\u7684\u9700\u8981\u5b57\u7b26\u4e32\u6bd4\u8f83\uff0c\u5b9e\u73b0\u6761\u4ef6\u7f16\u8bd1\u7684\u8bdd\u53ef\u4ee5\u4f7f\u7528 &#8220;==&#8221;\u3002<\/p>\n<p>HelloWorld.java\u6587\u4ef6\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<pre>package com.test;\r\n\r\n\/**\r\n * Test Demo\r\n *\/\r\npublic class HelloWorld {\r\n\r\n    public static void main(String[] args) {\r\n        if (BuildConfig.FLAG == \"false\") {\r\n            System.out.println(\"Hello World\");\r\n        } else {\r\n            System.out.println(\"Java\u6761\u4ef6\u7f16\u8bd1\u6d4b\u8bd5\");\r\n        }\r\n    }\r\n\r\n}<\/pre>\n<\/div>\n<p>HelloWorld.class\u6587\u4ef6\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<pre>\/\/\r\n\/\/ Source code recreated from a .class file by IntelliJ IDEA\r\n\/\/ (powered by Fernflower decompiler)\r\n\/\/\r\n\r\npackage com.test;\r\n\r\npublic class HelloWorld {\r\n    public HelloWorld() {\r\n    }\r\n\r\n    public static void main(String[] args) {\r\n        System.out.println(\"Hello World\");\r\n    }\r\n}<\/pre>\n<\/div>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>http:\/\/www.mamicode.com\/info-detail-6507 &hellip; <a href=\"https:\/\/blog.zhenglei.net\/?p=255433\">\u7ee7\u7eed\u9605\u8bfb <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[274],"class_list":["post-255433","post","type-post","status-publish","format-standard","hentry","category-software-download","tag-java"],"_links":{"self":[{"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=\/wp\/v2\/posts\/255433","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=255433"}],"version-history":[{"count":1,"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=\/wp\/v2\/posts\/255433\/revisions"}],"predecessor-version":[{"id":255434,"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=\/wp\/v2\/posts\/255433\/revisions\/255434"}],"wp:attachment":[{"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=255433"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=255433"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=255433"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}