{"id":190824,"date":"2023-08-06T00:02:19","date_gmt":"2023-08-05T16:02:19","guid":{"rendered":"https:\/\/www.idc.net\/help\/190824\/"},"modified":"2023-08-06T00:02:19","modified_gmt":"2023-08-05T16:02:19","slug":"%e5%90%8e%e6%b5%aa%e4%ba%91sdk%e6%95%99%e7%a8%8b%ef%bc%9a%e7%ac%ac%e4%b8%83%e7%ab%a0-java%e5%ba%94%e7%94%a8%e7%a8%8b%e5%ba%8f%e7%bc%96%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/190824\/","title":{"rendered":"\u540e\u6d6a\u4e91SDK\u6559\u7a0b\uff1a\u7b2c\u4e03\u7ae0 Java\u5e94\u7528\u7a0b\u5e8f\u7f16\u7a0b"},"content":{"rendered":"

\u7b2c\u4e03\u7ae0 Java\u5e94\u7528\u7a0b\u5e8f\u7f16\u7a0b<\/h2>\n

\u5982\u679c\u5927\u5bb6\u5df2\u7ecf\u5bf9Java\u975e\u5e38\u719f\u6089\uff0c\u90a3\u4e48\u4e0d\u59a8\u76f4\u63a5\u5ffd\u7565\u8fd9\u90e8\u5206\u5185\u5bb9\u3002\u5982\u679c\u5927\u5bb6\u7684\u6280\u5de7\u8fd8\u5b58\u5728\u5c40\u9650\u6216\u8005\u5bf9Java\u8fd9\u79cd\u8bed\u8a00\u53ea\u95fb\u5176\u540d\uff0c\u90a3\u4e48\u672c\u6587\u5c06\u4e3a\u5404\u4f4d\u89e3\u7b54\u5f88\u591a\u5728Android\u5f00\u53d1\u5f53\u4e2d\u7ecf\u5e38\u9047\u5230\u7684\u95ee\u9898\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u8fd9\u7bc7\u6587\u7ae0\u5e76\u4e0d\u80fd\u4f5c\u4e3aJava\u8d77\u6b65\u6559\u7a0b\u6765\u9605\u8bfb\uff0c\u6700\u591a\u53ea\u80fd\u7b97\u662f\u57fa\u7840\u77e5\u8bc6\u6c47\u603b\u3002\u5982\u679c\u5bf9Java\u6beb\u65e0\u4e86\u89e3\uff0c\u5927\u5bb6\u8fd8\u9700\u8981\u53c2\u8003\u5176\u5b83\u4e00\u4e9b\u989d\u5916\u7684Java\u5b66\u4e60\u8d44\u6599\u3002<\/p>\n

\u5728\u8fd9\u4efd\u6559\u7a0b\u4e2d\uff0c\u6211\u4eec\u4e0d\u4f1a\u8fc7\u5ea6\u6df1\u5165\u7ec6\u8282\uff0c\u4e0d\u8fc7\u5982\u679c\u5927\u5bb6\u5bf9\u4e8e\u67d0\u4e9b\u6982\u5ff5\u8fd8\u4e0d\u5927\u6e05\u695a\uff0c\u8bf7\u70b9\u51fb\u6b64\u5904\u53c2\u9605\u7532\u9aa8\u6587Java\u6307\u5357\u3002\u8fd9\u662f\u4e00\u4efd\u975e\u5e38\u4f18\u79c0\u7684Java\u8bed\u8a00\u6307\u5bfc\u6750\u6599\uff0c\u975e\u5e38\u9002\u5408\u521d\u5b66\u8005\u3002\u5982\u679c\u5728\u521a\u521a\u5f00\u59cb\u9605\u8bfb\u65f6\u53d1\u73b0\u672c\u6559\u7a0b\u63d0\u5230\u7684\u4e00\u4e9b\u5185\u5bb9\u6709\u4e9b\u964c\u751f\uff0c\u4e5f\u8bf7\u5927\u5bb6\u5343\u4e07\u4e0d\u8981\u60ca\u614c\u3002\u53ea\u8981\u771f\u6b63\u7740\u624b\u5f00\u59cb\u5728Android\u9879\u76ee\u4e2d\u8fdb\u884c\u5c1d\u8bd5\uff0c\u5404\u4f4d\u5f88\u5feb\u5c31\u80fd\u7406\u89e3\u672c\u6587\u8868\u8fbe\u7684\u5185\u5bb9\u3002<\/p>\n

1. Java\u8bed\u6cd5<\/h3>\n

\u7b2c\u4e00\u6b65<\/strong><\/p>\n

\u5927\u5bb6\u5df2\u7ecf\u5728\u6211\u4eec\u7684Android\u9879\u76ee\u4e2d\u89c1\u8bc6\u8fc7\u4e00\u90e8\u5206Java\u8bed\u6cd5\u4e86\uff0c\u4f46\u4e3a\u4e86\u6e05\u695a\u8d77\u89c1\uff0c\u8ba9\u6211\u4eec\u518d\u4ece\u53e6\u4e00\u4e2a\u9879\u76ee\u91cd\u65b0\u5b66\u4e60\u3002\u8fd9\u4e00\u6b21\u6211\u4eec\u4e0d\u518d\u4f7f\u7528Android\u9879\u76ee\uff0c\u800c\u76f4\u63a5\u6362\u6210Java\u9879\u76ee\u2014\u2014\u8fd9\u6837\u5927\u5bb6\u5c31\u80fd\u66f4\u8f7b\u677e\u5730\u611f\u53d7\u5230\u6211\u4eec\u6240\u4f7f\u7528\u7684\u7ed3\u6784\u3002\u6253\u5f00Eclipse\uff0c\u70b9\u51fb\u201cNew\u201d\u6309\u94ae\u3002\u5728\u5f39\u51fa\u7684\u5bfc\u822a\u7a97\u53e3\u4e2d\u4e0b\u6eda\u5230Java\u6587\u4ef6\u5939\u4e2d\u5e76\u5c06\u5176\u6253\u5f00\uff0c\u9009\u62e9\u201cJava Project\u201d\u7136\u540e\u5355\u51fb\u4e0b\u4e00\u6b65\u3002<\/p>\n

\n

\u8f93\u5165\u201cMyJavaProject\u201d\u4f5c\u4e3a\u9879\u76ee\u540d\u79f0\u5e76\u70b9\u51fb\u201cFinish\u201d\u3002Eclipse\u63a5\u4e0b\u6765\u4f1a\u5728\u5de5\u4f5c\u533a\u5185\u521b\u5efa\u6211\u4eec\u7684\u65b0\u9879\u76ee\u3002\u5728Package Explorer\u5f53\u4e2d\uff0c\u6253\u5f00\u65b0\u9879\u76ee\u6587\u4ef6\u5939\uff0c\u53f3\u952e\u70b9\u51fb\u201csrc\u201d\u5e76\u9009\u62e9\u201cNew\u201d\u3001\u7136\u540e\u9009\u201cClass\u201d\u3002\u8fd9\u65f6\u5728Name\u6846\u4e2d\u8f93\u5165\u201cMyMainClass\u201d\u3002\u63a5\u7740\u52fe\u9009\u65c1\u8fb9\u7684\u590d\u9009\u9879\u201cpublic static void main\u201d\u6700\u540e\u70b9\u51fb\u201cFinish\u201d\u3002<\/p>\n

\n

Eclipse\u4f1a\u521b\u5efa\u51fa\u7c7b\u5e76\u5728\u7f16\u8f91\u5668\u4e2d\u6253\u5f00\u3002\u5927\u5bb6\u4e0d\u5fc5\u8fc7\u591a\u5173\u6ce8\u9879\u76ee\u7ed3\u6784\u6216\u8005\u7c7b\u4e2d\u7684\u73b0\u6709\u5185\u5bb9\uff0c\u56e0\u4e3a\u6211\u4eec\u7684Android\u9879\u76ee\u6240\u4f7f\u7528\u7684\u7ed3\u6784\u4e0eJava\u9879 \u76ee\u5e76\u4e0d\u76f8\u540c\u3002\u5404\u4f4d\u53ef\u4ee5\u5229\u7528\u8fd9\u4e2a\u9879\u76ee\u6765\u78e8\u7ec3\u81ea\u5df1\u7684Java\u7f16\u7801\u6280\u80fd\uff0c\u5728\u8fd9\u91cc\u4ee3\u7801\u7684\u8fd0\u884c\u4e0e\u6d4b\u8bd5\u90fd\u8981\u6bd4Android\u5e94\u7528\u7b80\u4fbf\u5f97\u591a\uff0c\u800c\u4e14\u6211\u4eec\u4e5f\u80fd\u66f4\u591a\u5730\u5173\u6ce8 Java\u8bed\u6cd5\u672c\u8eab\u3002<\/p>\n

\u6211\u4eec\u5728\u7c7b\u6587\u4ef6\u4e2d\u770b\u5230\u7684\u201cpublic static void main\u201d\u884c\u5c31\u662f\u4e3b\u65b9\u6cd5\u3002\u65e0\u8bba\u65b9\u6cd5\u7684\u5177\u4f53\u5185\u5bb9\u662f\u4ec0\u4e48\uff0c\u5b83\u90fd\u4f1a\u5728\u5e94\u7528\u7a0b\u5e8f\u8fd0\u884c\u65f6\u52a0\u4ee5\u6267\u884c\u3002\u65b9\u6cd5\u7684\u5185\u5bb9\u5c31\u662f\u663e\u793a\u5728\u201cpublic static void main(String[] args)\u201d\u540e\u9762\u5927\u62ec\u53f7\u91cc\u7684\u90e8\u5206\u3002Eclipse\u53ef\u80fd\u8fd8\u751f\u6210\u4e86\u4e00\u4e2a\u201cto do\u201d\u884c\u2014\u2014\u76f4\u63a5\u65e0\u89c6\u5c31\u597d\u3002\u5728\u5176\u540e\u521b\u5efa\u65b0\u884c\uff0c\u6211\u4eec\u5c31\u4ece\u8fd9\u91cc\u5f00\u59cb\u6dfb\u52a0\u81ea\u5df1\u7684\u4ee3\u7801\u3002<\/p>\n

\u7b2c\u4e8c\u6b65<\/strong><\/p>\n

\u5728Java\u5f53\u4e2d\uff0c\u4e00\u6761\u53d8\u91cf\u53ef\u4ee5\u4fdd\u5b58\u4e00\u4e2a\u6570\u636e\u503c\uff0c\u4f8b\u5982\u6587\u672c\u5b57\u7b26\u4e32\u6216\u8005\u6570\u5b57\u3002\u5f53\u6211\u4eec\u5728Java\u4e2d\u521b\u5efa\u6216\u8005\u201c\u58f0\u660e\u201d\u4e00\u4e2a\u53d8\u91cf\u65f6\uff0c\u9700\u8981\u6307\u5b9a\u5176\u4e2d\u7684\u6570\u636e\u7c7b\u578b\u5e76\u4e3a\u5176\u547d\u540d\u3002\u8f93\u5165\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n

int myNum; <\/code><\/pre>\n
\u8fd9\u4e00\u884c\u58f0\u660e\u4e86\u4e00\u4e2a\u6574\u6570\u53d8\u91cf\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4ee3\u7801\u884c\u58f0\u660e\u4e00\u4e2a\u53d8\u91cf\u5e76\u4e3a\u5176\u5206\u914d\u4e00\u4e2a\u503c\uff1a<\/p>\n
int myNum = 5; <\/code><\/pre>\n
\u73b0\u5728\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u540d\u79f0\u5f15\u7528\u8fd9\u6761\u53d8\u91cf\u4e86\u3002\u6dfb\u52a0\u4ee5\u4e0b\u4ee3\u7801\u884c\uff0c\u4ece\u800c\u5c06\u53d8\u91cf\u503c\u5199\u5165\u5230\u8f93\u51fa\u63a7\u5236\u53f0\uff1a<\/p>\n
System.out.println(myNum);<\/code><\/pre>\n
\u5927\u5bb6\u4e00\u822c\u4e0d\u4f1a\u5728\u81ea\u5df1\u7684Android\u5e94\u7528\u4e2d\u4ee5\u8fd9\u79cd\u65b9\u5f0f\u5411\u7cfb\u7edf\u8f93\u51fa\u5199\u5165\u7ed3\u679c\uff0c\u800c\u662f\u7528LogCat\u89c6\u56fe\u53d6\u800c\u4ee3\u4e4b\u3002\u4e0d\u8fc7\u901a\u8fc7\u8fd9\u79cd\u8f93\u51fa\u5199\u5165\u65b9\u5f0f\uff0c\u6211\u4eec\u80fd\u591f\u66f4\u4e3a\u4fbf\u6377\u5730\u5bf9Java\u4ee3\u7801\u8fdb\u884c\u6d4b\u8bd5\u3002<\/p>\n
\u7b2c\u4e09\u6b65<\/strong><\/p>\n
\u73b0\u5728\u8ba9\u6211\u4eec\u8fd0\u884c\u5e94\u7528\u3002\u8fd0\u884c\u8fc7\u7a0b\u4e0eAndroid\u5e94\u7528\u5b58\u5728\u4e9b\u8bb8\u4e0d\u540c\uff0c\u4f46\u6211\u4eec\u4f1a\u5728\u7a0d\u540e\u7ee7\u7eed\u8fdb\u884c\u8bf4\u660e\u3002\u9009\u62e9\u201cRun\u201d\uff0c\u800c\u540e\u9009\u62e9\u201cRun Configurations\u201d\u3002\u5728\u5f39\u51fa\u7684\u5217\u8868\u5de6\u4fa7\u9009\u62e9\u201cJava Application\u201d\u5e76\u70b9\u51fb\u4e0a\u65b9\u7684\u201cNew launch configuration\u201d\u3002\u5982\u679c\u8fd9\u662f\u6211\u4eec\u7684\u60df\u4e00\u4e00\u4e2aJava\u5e94\u7528\uff0cEclipse\u4f1a\u81ea\u52a8\u9009\u62e9\u8fd0\u884c\u521a\u521a\u521b\u5efa\u5b8c\u6210\u7684\u5c0f\u5c0f\u6210\u679c\u3002<\/p>\n
\n
\u73b0\u5728\u70b9\u51fb\u201cRun\u201d\u6765\u8fd0\u884c\u6211\u4eec\u7684\u5e94\u7528\u7a0b\u5e8f\u3002\u5927\u5bb6\u4f1a\u770b\u5230\uff0c\u7f16\u8f91\u5668\u4e0b\u65b9\u7684\u63a7\u5236\u53f0\u89c6\u56fe\u4e2d\u5c06\u663e\u793a\u51fa\u6570\u5b57\u201c5\u201d\u3002\u5927\u5bb6\u53ef\u4ee5\u5229\u7528\u8fd9\u79cd\u65b9\u5f0f\u5728\u5b66\u4e60\u8fc7\u7a0b\u4e2d\u5bf9Java\u4ee3\u7801\u8fdb\u884c\u6d4b\u8bd5\u3002<\/p>\n
\n
\u5927\u5bb6\u73b0\u5728\u53ef\u4ee5\u901a\u8fc7\u5de5\u5177\u680f\u4e2d\u7684\u201cRun\u201d\u6309\u94ae\u968f\u65f6\u8fd0\u884c\u4e0a\u4e00\u6b21\u542f\u52a8\u8fc7\u7684\u9879\u76ee\u3002<\/p>\n
\n
\u7b2c\u56db\u6b65<\/strong><\/p>\n
\u65e0\u8bba\u4f55\u65f6\uff0c\u53ea\u8981\u662f\u5728Java\u4e2d\u8fdb\u884c\u53d8\u91cf\u58f0\u660e\uff0c\u6211\u4eec\u90fd\u4f1a\u4f7f\u7528\u76f8\u540c\u7684\u8bed\u6cd5\u3002\u4e3a\u4e86\u5728\u4ee5\u540e\u7684\u7f16\u7a0b\u5de5\u4f5c\u4e2d\u4e3a\u53d8\u91cf\u5206\u914d\u4e0d\u540c\u7684\u503c\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u540d\u79f0\u5bf9\u5176\u8fdb\u884c\u5f15\u7528\uff1a<\/p>\n
 myNum = 3;<\/code><\/pre>\n
\u4e0a\u8ff0\u4ee3\u7801\u4f1a\u8986\u76d6\u6389\u73b0\u6709\u503c\u3002\u5728Java\u4e2d\u5b58\u5728\u7740\u5f88\u591a\u4e0d\u540c\u7684\u53d8\u91cf\u7c7b\u578b\u3002\u5176\u4e2dint\u5c5e\u4e8e\u88ab\u5f15\u7528\u7684\u57fa\u672c\u7c7b\u578b\uff0c\u6b64\u5916\u8fd8\u6709\u4e00\u4e9b\u5176\u5b83\u6570\u5b57\u7c7b\u578b\uff1bchar\u7528\u4e8e\u5b57\u7b26\u503c\uff0c\u800cboolean\u5219\u7528\u4e8e\u4fdd\u5b58\u771f\u5047\u503c\u3002\u5bf9\u8c61\u7684\u7c7b\u578b\u4e5f\u5206\u8bb8\u591a\u79cd\uff1b\u5173\u4e8e\u5bf9\u8c61\u7684\u8bdd\u9898\uff0c\u6211\u4eec\u653e\u5728\u4ee5\u540e\u8fdb\u884c\u8ba8\u8bba\u3002\u5bf9\u4e8e\u5927\u5bb6\u6765\u8bf4\uff0c\u6700\u719f\u6089\u7684\u57fa\u672c\u5bf9\u8c61\u7c7b\u578b\u5e94\u8be5\u8981\u6570String\u4e86\uff0c\u5b83\u7684\u4f5c\u7528\u662f\u4fdd\u5b58\u4e00\u6761\u6587\u672c\u5b57\u7b26\u4e32\uff1a<\/p>\n
 String myName = \"Sue\";<\/code><\/pre>\n
\u6587\u672c\u5b57\u7b26\u4e32\u503c\u8981\u7528\u5f15\u53f7\u62ec\u8d77\u6765\u3002\u5927\u5bb6\u53ef\u4ee5\u5728\u6b63\u9762\u7684\u4f8b\u5b50\u4e2d\u770b\u5230\u5b83\u7684\u4f7f\u7528\u65b9\u6cd5\uff1a<\/p>\n
 System.out.println(\"number: \" + myNum);<\/code><\/pre>\n
\u6dfb\u52a0\u4e0a\u8ff0\u4ee3\u7801\u5e76\u8fd0\u884c\uff0c\u63a7\u5236\u53f0\u4f1a\u663e\u793a\u201cnumber\uff1a\u201d\u518d\u52a0\u4e0a\u53d8\u91cf\u503c\u3002<\/p>\n
\u7b2c\u4e94\u6b65<\/strong><\/p>\n
\u5728\u4e0a\u9762\u6211\u4eec\u770b\u5230\u4e86\u8d4b\u503c\u8fd0\u7b97\u7b26\u201c=\u201d\u2014\u2014\u6b63\u9762\u6211\u4eec\u518d\u6765\u770b\u5176\u5b83\u4e00\u4e9b\u5e38\u89c1\u8fd0\u7b97\u7b26\uff1a<\/p>\n
\/\/add\nmyNum = 5+6;\n\/\/subtract\nmyNum = 7-3;\n\/\/multiply\nmyNum = 3*2;\n\/\/divide\nmyNum = 10\/5;\n\/\/remainder\nmyNum = 10%6;\n\/\/increment (add one)\nmyNum++;\n\/\/decrement (subtract one)\nmyNum--;<\/code><\/pre>\n
\u8fd0\u7b97\u7b26\u65e2\u53ef\u4ee5\u88ab\u7528\u5728\u53d8\u91cf\u5f53\u4e2d\uff0c\u4e5f\u53ef\u4ee5\u4f5c\u4e3a\u786c\u7f16\u7801\u6570\u5b57\uff08\u5982\u4e0a\u6240\u793a\uff09\uff1a<\/p>\n
int myNum = 5;\nint myOtherNum = 4;\nint total = myNum+myOtherNum;\/\/9<\/code><\/pre>\n
\u7b2c\u516d\u6b65<\/strong><\/p>\n
\u4f5c\u4e3aAndroid\u57fa\u7840\u5185\u5bb9\u7684\u53e6\u4e00\u79cdJava\u7ed3\u6784\u5c31\u662f\u6ce8\u91ca\u3002\u5927\u5bb6\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4e24\u79cd\u65b9\u5f0f\u6dfb\u52a0\u6ce8\u91ca\uff1a<\/p>\n
\/\/this is a single line comment\n\n\/* This is a multiline comment\n* stretching across lines\n* to give more information\n*\/<\/code><\/pre>\n
\u6700\u91cd\u8981\u7684\u662f\u517b\u6210\u7f16\u5199\u4ee3\u7801\u7684\u540c\u65f6\u6dfb\u52a0\u6ce8\u91ca\u7684\u597d\u4e60\u60ef\uff0c\u8fd9\u4e00\u65b9\u9762\u4fbf\u4e8e\u6211\u4eec\u81ea\u5df1\u65e5\u540e\u67e5\u770b\uff0c\u53e6\u5916\u4e5f\u80fd\u8ba9\u5176\u4ed6\u5408\u4f5c\u8005\u4e86\u89e3\u6211\u4eec\u7684\u7f16\u7801\u610f\u56fe\u3002<\/p>\n
2. \u63a7\u5236\u7ed3\u6784<\/h3>\n
\u7b2c\u4e00\u6b65<\/strong><\/p>\n
\u6211\u4eec\u5411\u4e3b\u65b9\u6cd5\u4e2d\u6dfb\u52a0\u7684\u4ee3\u7801\u4f1a\u5728Java\u5e94\u7528\u7a0b\u5e8f\u8fd0\u884c\u65f6\u540c\u65f6\u6267\u884c\u3002\u800c\u5728\u8fd0\u884c\u6211\u4eec\u6240\u521b\u5efa\u7684Android\u5e94\u7528\u7a0b\u5e8f\u65f6\uff0c\u4e3bActivity\u4e2donCreate\u65b9\u6cd5\u7684\u4ee3\u7801\u4f1a\u540c\u65f6\u6267\u884c\u3002\u8fd9\u4e9b\u65b9\u6cd5\u4e2d\u7684\u6240\u6709\u4ee3\u7801\u884c\u90fd\u4f1a\u6309\u4ece\u4e0a\u5230\u4e0b\u7684\u987a\u5e8f\u4f9d\u6b21\u6267\u884c\uff0c\u4e0d\u8fc7\u6267\u884c\u7684\u6d41\u7a0b\u5e76\u4e0d\u603b\u662f\u7ebf\u6027\u7684\u3002Java\u5f53\u4e2d\u6709\u5f88\u591a\u63a7\u5236\u7ed3\u6784\uff0c\u6b63\u9762\u6211\u4eec\u5c31\u4ece\u6761\u4ef6\u5f00\u59cb\u4e86\u89e3\u5176\u4e2d\u6700\u5e38\u89c1\u7684\u51e0\u79cd\u3002\u6761\u4ef6\u8bed\u53e5\u4e00\u822c\u7528\u4e8e\u8fdb\u884c\u6d4b\u8bd5\u4ece\u800c\u786e\u5b9a\u6267\u884c\u6d41\u7a0b\u3002\u5728Java\u5f53\u4e2d\uff0c\u6700\u7b80\u5355\u7684\u6761\u4ef6\u7ed3\u6784\u5c31\u662fif\u8bed\u53e5\uff1a<\/p>\n
if(myNum>3) \n    System.out.println(\"number is greater than 3\");<\/code><\/pre>\n
\u8fd9\u9879\u6d4b\u8bd5\u7684\u76ee\u7684\u5728\u4e8e\u68c0\u67e5\u53d8\u91cf\u7684\u503c\u662f\u5426\u5927\u4e8e3\u3002\u5982\u679c\u786e\u5b9e\u5927\u4e8e3\uff0c\u90a3\u4e48\u5b57\u7b26\u4e32\u5c06\u88ab\u5199\u5165\u8f93\u51fa\u7ed3\u679c\u3002\u5982\u679c\u5c0f\u4e8e\u7b49\u4e8e3\uff0c\u5219\u4e0d\u5411\u8f93\u51fa\u7ed3\u679c\u5199\u5165\u4efb\u4f55\u5185\u5bb9\u3001\u7ee7\u7eed\u6267\u884c\u7a0b\u5e8f\u4e2d\u7684\u4e0b\u4e00\u884c\u3002\u6761\u4ef6\u6d4b\u8bd5\u4f1a\u201c\u8fd4\u56de\u201d\u4e00\u4e2a\u771f\u5047\u503c\u3002\u771f\u4e0e\u5047\u90fd\u5c5e\u4e8eboolean\u503c\u3002\u6211\u4eec\u4e5f\u53ef\u4ee5\u5411\u5176\u4e2d\u6dfb\u52a0else\uff0c\u8fd9\u6837\u5176\u5185\u5bb9\u53ea\u4f1a\u5728\u8fd4\u56de\u5047\u503c\u65f6\u624d\u6267\u884c\uff1a<\/p>\n
if(myNum>3) \n    System.out.println(\"number is greater than 3\");\nelse\n    System.out.println(\"number is not greater than 3\");<\/code><\/pre>\n
\u5728\u6211\u4eec\u7684\u793a\u4f8b\u4e2d\uff0celse\u8bed\u53e5\u4f1a\u5728\u503c\u7b49\u4e8e\u6216\u8005\u5c0f\u4e8e3\u65f6\u6267\u884c\u3002\u5c1d\u8bd5\u5728\u4ee3\u7801\u7684\u6574\u6570\u53d8\u91cf\u4e2d\u6dfb\u52a0\u4e0d\u540c\u7684\u503c\uff0c\u770b\u770b\u6761\u4ef6\u6d4b\u8bd5\u7ed3\u679c\u4f1a\u53d1\u751f\u54ea\u4e9b\u53d8\u5316\uff1a<\/p>\n
if(myNum>10) \n    System.out.println(\"number is greater than 10\");\nelse if(myNum>7)\n    System.out.println(\"number is greater than 7\");\nelse if(myNum>3)\n    System.out.println(\"number is greater than 3\");\nelse\n    System.out.println(\"number is 3 or less\");<\/code><\/pre>\n
\u53ea\u6709\u5728\u6d41\u7a0b\u4e2d\u7684\u6bcf\u4e00\u6b21\u6d4b\u8bd5\u4e2d\u90fd\u8fd4\u56de\u5047\u503c\u65f6\uff0c\u6240\u6709\u6d4b\u8bd5\u884c\u624d\u4f1a\u88ab\u5f7b\u5e95\u6267\u884c\u4e00\u904d\u3002\u56e0\u6b64\u5bf9\u4e8e\u5927\u90e8\u5206\u6570\u5b57\u6765\u8bf4\uff0c\u53ea\u4f1a\u8f93\u51fa\u4e00\u6761\u5b57\u7b26\u4e32\u3002\u5982\u679c\u6709\u5fc5\u8981\uff0c\u5927\u5bb6\u53ef\u4ee5\u628a\u591a\u6761else if\u8bed\u53e5\u4e32\u70b9\u8d77\u6765\u3002\u5927\u5bb6\u8fd8\u53ef\u4ee5\u5229\u7528if\u8bed\u53e5\u4e0e\u4e00\u4e2a\u6216\u8005\u591a\u4e2aelse if\u76f8\u7ed3\u5408\uff0c\u800c\u4e0d\u5fc5\u6bcf\u4e00\u6b21\u90fd\u5728\u4e4b\u540e\u5355\u72ec\u8bbe\u7f6eelse\u3002<\/p>\n
\u4e0b\u9762\u6211\u4eec\u6d4b\u8bd5\u4e00\u4e2a\u6570\u5b57\u662f\u5426\u5927\u4e8e\u53e6\u4e00\u4e2a\u3002\u5c1d\u8bd5\u4f7f\u7528\u4ee5\u4e0b\u53d8\u91cf\uff1a<\/p>\n
if(myNum<10)\n    System.out.println(\"number less than 10\");\nif(myNum==10)\n    System.out.println(\"number equals 10\");\nif(myNum!=10)\n    System.out.println(\"number is not equal to 10\");\nif(myNum>=10)\n    System.out.println(\"number either greater than or equal to 10\");\nif(myNum<=10)\n    System.out.println(\"number either less than or equal to 10\");<\/code><\/pre>\n
\u5927\u5bb6\u4e5f\u53ef\u4ee5\u5229\u7528\u5305\u542b\u5b57\u7b26\u4e32\u7684\u53d8\u91cf\u7c7b\u578b\u8fdb\u884c\u7c7b\u4f3c\u7684\u6d4b\u8bd5\u3002\u8981\u540c\u65f6\u8fdb\u884c\u591a\u9879\u6d4b\u8bd5\uff0c\u53ef\u4ee5\u5229\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a<\/p>\n
if(myNum>=10 && myNum<=50)\n    System.out.println(\"number is between 10 and 50\");<\/code><\/pre>\n
\u5176\u4e2d\u7684\u201c&&\u201d\u662f\u4f5c\u4e3a\u201cand\u201d\u8fd0\u7b97\u7b26\u5b58\u5728\u7684\uff0c\u610f\u601d\u662f\u6574\u6761\u8bed\u53e5\u53ea\u6709\u5728\u4e24\u9879\u6d4b\u8bd5\u90fd\u8fd4\u56de\u771f\u503c\u65f6\u624d\u88ab\u5224\u5b9a\u4e3a\u771f\u3002\u800c\u201cor\u201d\u8fd0\u7b97\u7b26\u5c06\u5728\u4e24\u6761\u6d4b\u8bd5\u4e2d\u4efb\u610f\u4e00\u6761\u8fd4\u56de\u771f\u503c\u65f6\u5224\u5b9a\u4e3a\u771f\uff1a<\/p>\n
if(myNum<0 || myNum!=-1)\n    System.out.println(\"number is less than 0 or not equal to -1\");<\/code><\/pre>\n
\u4e3a\u4e86\u5c06\u4ee3\u7801\u7ec4\u6210\u4ee3\u7801\u5757\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5927\u62ec\u53f7\u2014\u2014\u4e24\u4e2a\u62ec\u53f7\u4e4b\u95f4\u7684\u6240\u6709\u4ee3\u7801\u90fd\u4f1a\u5728\u6d4b\u8bd5\u8fd4\u56de\u771f\u503c\u65f6\u6267\u884c\uff1a<\/p>\n
if(myNum<10)\n{\n    System.out.println(\"number less than 10\");\n    myNum=10;\n}<\/code><\/pre>\n
\u8fd9\u4e9b\u62ec\u53f7\u80fd\u591f\u5728\u5faa\u73af\u3001\u65b9\u6cd5\u4ee5\u53ca\u7c7b\u4e2d\u5b9e\u73b0\u4ee3\u7801\u5206\u7ec4\u3002<\/p>\n
\u7b2c\u4e8c\u6b65<\/strong><\/p>\n
\u63a5\u4e0b\u6765\u8ba9\u6211\u4eec\u770b\u770b\u5faa\u73af\u3002\u4e0b\u9762\u7684for\u5faa\u73af\u4f1a\u8fdb\u884c\u5341\u6b21\u904d\u5386\uff0c\u610f\u5473\u7740\u5b83\u7684\u5185\u5bb9\u5c06\u6267\u884c\u5341\u6b21\uff1a<\/p>\n
for(int i=0; i<10; i++){    System.out.println(i);}<\/code><\/pre>\n
\u5728for\u5faa\u73af\u4e2d\u7684\u7b2c\u4e00\u4e2a\u8868\u8fbe\u5f0f\u65e8\u5728\u5c06\u4e00\u4e2a\u6574\u6570\u578b\u8ba1\u6570\u5668\u53d8\u91cf\u521d\u59cb\u5316\u4e3a\u96f6\u3002\u7b2c\u4e8c\u4e2a\u8868\u8fbe\u5f0f\u5219\u662f\u6761\u4ef6\u6d4b\u8bd5\uff0c\u68c0\u67e5\u8be5\u53d8\u91cf\u7684\u503c\u662f\u5426\u5c0f\u4e8e10\u3002\u5982\u679c\u8fd4\u56de\u7684\u662f\u771f\u503c\uff0c\u5219\u5faa\u73af\u5185\u5bb9\u5f97\u5230\u6267\u884c\uff1b\u5982\u679c\u8fd4\u56de\u7684\u662f\u5047\u503c\uff0c\u5219\u4e2d\u6b62\u5faa\u73af\u3002\u4e00\u65e6\u5faa\u73af\u5f53\u4e2d\u7684\u5185\u5bb9\u5f00\u59cb\u6267\u884c\uff0c\u7b2c\u4e09\u4e2a\u8868\u8fbe\u5f0f\u5c31\u540c\u65f6\u6267\u884c\uff0c\u5373\u9012\u589e\u8ba1\u6570\u5668\u3002<\/p>\n
\u53e6\u4e00\u79cd\u5faa\u73afwhile\u6240\u4f7f\u7528\u7684\u8bed\u6cd5\u7a0d\u6709\u533a\u522b\u3002\u4ee5\u4e0b\u4ee3\u7801\u5c31\u662f\u6211\u4eec\u5229\u7528while\u6765\u5b9e\u73b0\u4e0a\u9762\u7684for\u5faa\u73af\u7684\u76f8\u540c\u6267\u884c\u6548\u679c\uff1a<\/p>\n
int i=0;\nwhile(i<10){\n    System.out.println(i);\n    i++;\n}<\/code><\/pre>\n
\u5faa\u73af\u5f53\u4e2d\u53ef\u4ee5\u5bb9\u7eb3\u591a\u884c\u4ee3\u7801\uff0c\u5176\u4e2d\u5305\u62ec\u5176\u5b83\u5faa\u73af\u3002<\/p>\n
\u7b2c\u4e09\u6b65<\/p>\n
\u6211\u4eec\u5df2\u7ecf\u63a5\u89e6\u4e86\u4e3b\u65b9\u6cd5\u4e0eAndroid\u7684onCreate\u65b9\u6cd5\u3002\u4e0b\u9762\u8ba9\u6211\u4eec\u4e00\u8d77\u5b66\u4e60\u5982\u4f55\u521b\u5efa\u81ea\u5df1\u7684\u65b9\u6cd5\u3002\u5c06\u4ee5\u4e0b\u65b9\u6cd5\u653e\u7f6e\u5728\u4e3b\u65b9\u6cd5\u7684\u53f3\u62ec\u53f7\u4e4b\u540e\uff1a<\/p>\n
public static void doSomething(){\n    System.out.println(\"something\");\n}<\/code><\/pre>\n
\u8be5\u65b9\u6cd5\u88ab\u5b9a\u4e49\u4e3apublic\uff0c\u8fd9\u610f\u5473\u7740\u9879\u76ee\u4e2d\u7684\u6240\u6709\u7c7b\u90fd\u53ef\u4ee5\u8c03\u7528\u5176\u8fdb\u7a0b\u3002\u5982\u679c\u5b83\u7684\u5c5e\u6027\u4e3a\u201cprivate\u201d\uff0c\u5219\u4ee3\u8868\u53ea\u4f9b\u540c\u4e00\u4e2a\u7c7b\u5185\u90e8\u8fdb\u884c\u8bbf\u95ee\uff08\u4e5f\u5c31\u662f\u2018visibility\u2019\uff09\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u5927\u5bb6\u4e0d\u4f1a\u5728\u81ea\u5df1\u7684\u7b2c\u4e00\u4e2aAndroid\u5e94\u7528\u4e2d\u5305\u542b\u201cstatic\u201d\u4fee\u9970\u7b26\uff0c\u56e0\u6b64\u5ffd\u7565\u6389\u5b83\u5373\u53ef\u3002\u800c\u201cvoid\u201d\u4ee3\u8868\u7740\u8fd4\u56de\u7c7b\u578b\u3002\u5728\u6211\u4eec\u7684\u793a\u4f8b\u4e2d\uff0c\u8be5\u65b9\u6cd5\u4e0d\u4f1a\u8fd4\u56de\u4efb\u4f55\u503c\u3002\u4e3a\u4e86\u6267\u884c\u8be5\u65b9\u6cd5\uff0c\u6211\u4eec\u9700\u8981\u5728\u4e3b\u65b9\u6cd5\u4e2d\u6dfb\u52a0\u4e00\u9879\u8c03\u7528\uff1a<\/p>\n
 doSomething();<\/code><\/pre>\n
\u8fd0\u884c\u5e94\u7528\u7a0b\u5e8f\u5e76\u67e5\u770b\u5176\u529f\u80fd\u2014\u2014\u6539\u53d8\u65b9\u6cd5\u4ee5\u8fd4\u56de\u4e00\u4e2a\u503c\uff1a<\/p>\n
public static int doSomething(){\n    return 5;\n}<\/code><\/pre>\n
\u6539\u53d8\u65b9\u6cd5\u8c03\u7528\u5e76\u518d\u6b21\u8fd0\u884c\uff1a<\/p>\n
 System.out.println(doSomething());<\/code><\/pre>\n
\u8fd4\u56de\u7684\u503c\u4f1a\u88ab\u5199\u51fa\u3002\u65b9\u6cd5\u8fd8\u53ef\u4ee5\u63a5\u6536\u53c2\u6570\uff1a<\/p>\n
public static int doSomething(int firstNum, int secondNum){\n    return firstNum*secondNum;\n}<\/code><\/pre>\n
\u5728\u8c03\u7528\u8be5\u65b9\u6cd5\u65f6\uff0c\u5927\u5bb6\u5fc5\u987b\u7b26\u5408\u6b63\u786e\u7684\u53c2\u6570\u7c7b\u578b\u4e0e\u6570\u5b57\uff1a<\/p>\n
 System.out.println(doSomething(3, 5));<\/code><\/pre>\n
\u65b9\u6cd5\u80fd\u591f\u5c06\u5e94\u7528\u7a0b\u5e8f\u8fdb\u7a0b\u62c6\u5206\u4e3a\u903b\u8f91\u5757\u3002\u5982\u679c\u5927\u5bb6\u9700\u8981\u591a\u6b21\u6267\u884c\u540c\u4e00\u9879\u4efb\u52a1\uff0c\u90a3\u4e48\u5b83\u4eec\u7684\u4f5c\u7528\u5c06\u975e\u5e38\u91cd\u8981\uff1b\u6211\u4eec\u53ef\u4ee5\u7b80\u5355\u5728\u65b9\u6cd5\u4e2d\u8fdb\u884c\u5b9a\u4e49\uff0c\u7136\u540e\u5728\u9700\u8981\u65f6\u968f\u65f6\u8c03\u7528\u3002\u5982\u679c\u5404\u4f4d\u9700\u8981\u6539\u53d8\u5904\u7406\u6d41\u7a0b\uff0c\u4e5f\u53ea\u9700\u5728\u65b9\u6cd5\u4ee3\u7801\u4e2d\u8fdb\u884c\u4fee\u6539\u3002<\/p>\n
3. \u7c7b\u4e0e\u5bf9\u8c61<\/h3>\n
\u7b2c\u4e00\u6b65<\/strong><\/p>\n
\u6211\u4eec\u5df2\u7ecf\u4e86\u89e3\u4e86\u65b9\u6cd5\u5982\u4f55\u88ab\u7528\u4e8e\u91cd\u65b0\u4f7f\u7528\u4ee3\u7801\u5e76\u5c06\u5176\u62c6\u5206\u6210\u903b\u8f91\u90e8\u5206\u3002\u7c7b\u4e0e\u5bf9\u8c61\u5219\u80fd\u591f\u5728\u66f4\u5927\u7684\u8303\u56f4\u5185\u5b9e\u73b0\u6b64\u7c7b\u529f\u80fd\u3002\u5927\u5bb6\u53ef\u4ee5\u5c06\u5e94\u7528\u4e2d\u7684\u4efb\u52a1\u5212\u5206\u6210\u4e0d\u540c\u5bf9\u8c61\uff0c\u5176\u4e2d\u6bcf\u4e2a\u5bf9\u8c61\u90fd\u7531\u5b83\u6240\u5f52\u5c5e\u7684\u7c7b\u4e3a\u5176\u5b9a\u4e49\u4e00\u7cfb\u5217\u804c\u8d23\u3002\u8fd9\u7c7b\u4f3c\u4e8e\u7528\u4e00\u79cd\u65b9\u6cd5\u8d1f\u8d23\u4e00\u4e2a\u7279\u5b9a\u529f\u80fd\u533a\u57df\uff0c\u4e0d\u8fc7\u4e00\u4e2a\u5bf9\u8c61\u53ef\u4ee5\u62e5\u6709\u591a\u4e2a\u65b9\u6cd5\u800c\u4e14\u80fd\u591f\u4fdd\u5b58\u6570\u636e\u503c\u3002<\/p>\n
\u60f3\u8c61\u6211\u4eec\u6b63\u5728\u521b\u5efa\u4e00\u6b3e\u6e38\u620f\u2014\u2014\u5927\u5bb6\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u4e13\u95e8\u7528\u6765\u5904\u7406\u7528\u6237\u8be6\u7ec6\u4fe1\u606f\u7684\u7c7b\u3002\u5728Package Explorer\u4e2d\u9009\u62e9\u6211\u4eec\u7684\u5e94\u7528\u7a0b\u5e8f\u5305\uff0c\u53f3\u952e\u70b9\u51fb\u5e76\u9009\u62e9\u201cNew\u201d\u800c\u540e\u662f\u201cClass\u201d\u3002\u8f93\u5165\u201cGameUser\u201d\u4f5c\u4e3a\u7c7b\u540d\u79f0\uff0c\u786e\u4fddmain method stub\u590d\u9009\u6846\u6ca1\u6709\u88ab\u52fe\u9009\uff0c\u7136\u540e\u70b9\u51fb\u201cFinish\u201d\u3002Eclipse\u4f1a\u6253\u5f00\u8fd9\u4e2a\u7c7b\u6587\u4ef6\uff0c\u5728\u521d\u59cb\u72b6\u6001\u4e0b\u5176\u4e2d\u53ea\u5305\u542b\u5b83\u7684\u7c7b\u58f0\u660e\u6982\u8981\uff1a<\/p>\n
public class GameUser {\n    \/\/class content\n}<\/code><\/pre>\n
\u5927\u5bb6\u6240\u6dfb\u52a0\u7684\u6240\u6709\u5185\u5bb9\u90fd\u5e94\u8be5\u4f4d\u4e8e\u4e24\u4e2a\u5927\u62ec\u53f7\u4e4b\u95f4\uff08\u9664\u975e\u5927\u5bb6\u6dfb\u52a0\u5bfc\u5165\u8bed\u53e5\uff0c\u8fd9\u90e8\u5206\u5185\u5bb9\u5c06\u4f4d\u4e8e\u6700\u524d\u65b9\uff09\u3002\u6211\u4eec\u7684Android\u5e94\u7528\u4f1a\u8bc6\u522b\u51fa\u7f57\u5217\u4e8e\u6587\u4ef6\u5f00\u5934\u7684\u5305\u540d\u79f0\u3002\u5f53\u7136\u8fd9\u91cc\u6211\u4eec\u4f7f\u7528\u7684\u662f\u9ed8\u8ba4\u5305\uff0c\u6240\u4ee5\u524d\u9762\u5e76\u6ca1\u6709\u5217\u51fa\u5176\u5b83\u5185\u5bb9\u3002<\/p>\n
\u7b2c\u4e8c\u6b65<\/strong><\/p>\n
\u5728\u8fd9\u4e2a\u7c7b\u5f53\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u53d8\u91cf\uff1a<\/p>\n
private String playerName;\nprivate int score;<\/code><\/pre>\n
\u8fd9\u4e9b\u88ab\u79f0\u4e3a\u201c\u5b9e\u4f8b\u53d8\u91cf\u201d\uff0c\u56e0\u4e3a\u5b83\u4eec\u88ab\u5b9a\u4e49\u4e3a\u6211\u4eec\u6240\u521b\u5efa\u7684\u7c7b\u4e2d\u7684\u5b9e\u4f8b\u3002\u5728\u5b83\u4eec\u4e4b\u540e\u6dfb\u52a0\u4e00\u4e2a\u6784\u9020\u65b9\u6cd5\uff0c\u5b83\u4f1a\u5728\u8be5\u7c7b\u4e2d\u7684\u67d0\u4e2a\u5bf9\u8c61\u88ab\u521b\u5efa\u540e\u5f00\u59cb\u6267\u884c\uff1a<\/p>\n
public GameUser(String userName, int userScore){\n    playerName=userName;\n    score=userScore;\n}<\/code><\/pre>\n
\u8fd9\u91cc\u7684\u6784\u9020\u6c38\u8fdc\u4e0e\u7c7b\u4f7f\u7528\u540c\u6837\u7684\u540d\u79f0\uff0c\u800c\u4e14\u53ef\u80fd\u8981\u6c42\u4e5f\u53ef\u80fd\u4e0d\u8981\u6c42\u4f7f\u7528\u53c2\u6570\u3002\u8be5\u6784\u9020\u901a\u5e38\u5e94\u8be5\u5411\u5b9e\u4f8b\u53d8\u91cf\u5206\u914d\u503c\uff0c\u4e00\u822c\u662f\u901a\u8fc7\u53c2\u6570\u6765\u5b9e\u73b0\u3002<\/p>\n
\u7b2c\u4e09\u6b65<\/strong><\/p>\n
\u7c7b\u4e5f\u53ef\u4ee5\u5b9a\u4e49\u65b9\u6cd5\u3002\u5c06\u4ee5\u4e0b\u5178\u578b\u96c6\u5408\u6dfb\u52a0\u5230\u6784\u9020\u4e4b\u540e\uff1a<\/p>\n
public String getName() {return playerName;}\npublic int getScore() {return score;}\npublic void setName(String newName) {playerName=newName;}\npublic void setScore(int newScore) {score=newScore;}<\/code><\/pre>\n
\u8fd9\u4e9b\u88ab\u79f0\u4e3aget\u4e0eset\u65b9\u6cd5\uff0c\u6216\u8005\u53ebgetter\u4e0esetter\uff0c\u56e0\u4e3a\u5b83\u4eec\u4f1a\u5229\u7528\u63a5\u6536\u53ca\u53d1\u9001\u5b9e\u4f8b\u53d8\u91cf\u503c\u7684\u80fd\u529b\u5c06\u5916\u90e8\u4ee3\u7801\u6dfb\u52a0\u5230\u7c7b\u4e2d\u6765\u3002\u67e5\u770bEclipse\u4e2d\u7684Outline\u89c6\u56fe\uff0c\u7406\u89e3\u5b83\u5982\u4f55\u5e2e\u52a9\u5b9e\u73b0\u5bfc\u822a\u7c7b\u5185\u5bb9\u3002<\/p>\n
\n
\u7b2c\u56db\u6b65<\/strong><\/p>\n
\u4fdd\u5b58\u6211\u4eec\u65b0\u5efa\u7684\u7c7b\u6587\u4ef6\u3002\u56de\u5230\u4e3b\u7c7b\u5f53\u4e2d\uff0c\u4e3a\u65b0\u7c7b\u5728\u4e3b\u65b9\u6cd5\u4e2d\u521b\u5efa\u4e00\u4e2a\u5bf9\u8c61\uff1a<\/p>\n
GameUser aUser = new GameUser(\"Jim\", 0);<\/code><\/pre>\n
\u6211\u4eec\u7b26\u5408\u6784\u9020\u5f53\u4e2d\u7684\u53c2\u6570\u8981\u6c42\u2014\u2014\u4ee5\u4e0a\u4ee3\u7801\u4e2d\u7684\u201cnew\u201d\u5173\u952e\u5b57\u5c06\u4f7f\u6784\u9020\u5f00\u59cb\u6267\u884c\u3002\u73b0\u5728\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u8fd9\u4e2a\u7c7b\u5b9e\u4f8b\uff0c\u901a\u8fc7\u8c03\u7528\u5176\u65b9\u6cd5\u8bbf\u95ee\u5176\u4e2d\u7684\u6570\u636e\uff1a<\/p>\n
System.out.println(aUser.getScore());\naUser.setScore(5);\nSystem.out.println(aUser.getScore());<\/code><\/pre>\n
\u8fd0\u884c\u7a0b\u5e8f\u4ee5\u67e5\u770b\u8c03\u7528\u5bf9\u8c61\u4e0a\u7684public\u65b9\u6cd5\u4e4b\u540e\uff0c\u503c\u4ea7\u751f\u4e86\u4ec0\u4e48\u6837\u7684\u53d8\u5316\u3002\u5927\u5bb6\u53ef\u4ee5\u521b\u5efa\u591a\u4e2a\u5bf9\u8c61\u5b9e\u4f8b\uff0c\u5e76\u5bf9\u5b83\u4eec\u8fdb\u884c\u5206\u522b\u7ba1\u7406\uff1a<\/p>\n
GameUser anotherUser = new GameUser(\"Jane\", 5);<\/code><\/pre>\n
4. \u7ee7\u627f\u4e0e\u754c\u9762<\/h3>\n
\u7b2c\u4e00\u6b65<\/strong><\/p>\n
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\u73b0\u5728\u6253\u5f00Android\u9879\u76ee\u4e2d\u7684\u8fd9\u4e2a\u7c7b\u3002\u5728\u7c7b\u58f0\u660e\u7684\u5f00\u5934\uff0c\u5927\u5bb6\u4f1a\u770b\u5230\u201cextends Activity\u201d\u3002\u8fd9\u610f\u5473\u7740\u8be5\u7c7b\u5c5e\u4e8eAndroid Activity\u7c7b\u4e2d\u7684\u4e00\u4e2a\u5b50\u7c7b\u3002\u8fd9\u91cc\u7684Activity\u7c7b\u7528\u4e8e\u4f7fAndroid\u7cfb\u7edf\u5904\u7406\u5411\u7528\u6237\u5448\u73b0\u7684\u5c4f\u5e55\u5185\u5bb9\uff0c\u800c\u5404\u65b9\u6cd5\u5219\u7528\u4e8e\u4e0d\u540c\u53d8\u91cf\u72b6\u6001\u4e0b\u7684\u5c4f\u5e55\u5185\u5bb9\uff08\u521b\u5efa\u3001\u6682\u505c\u4e0e\u6d88\u9664\u7b49\uff09\u3002\u901a\u8fc7\u5411Android Activity\u7c7b\u58f0\u660e\u4e2d\u7684\u5b9a\u4e49\u65b9\u6cd5\u6dfb\u52a0\u4ee3\u7801\u5e76\u5728\u5fc5\u8981\u65f6\u589e\u52a0\u989d\u5916\u65b9\u6cd5\u7684\u65b9\u5f0f\uff0c\u6211\u4eec\u80fd\u591f\u66f4\u4e13\u6ce8\u4e8e\u5b9e\u73b0\u5e94\u7528\u7a0b\u5e8f\u7684\u72ec\u7279\u98ce\u683c\u3002<\/p>\n
\u8fd9\u662f\u6211\u4eec\u7ecf\u5e38\u4f1a\u5728Android\u4e0a\u4f7f\u7528\u7684\u6a21\u5f0f\uff0c\u7528\u4e8e\u4e3a\u5e94\u7528\u7a0b\u5e8f\u7684\u5e38\u89c1\u9700\u8981\u6269\u5c55\u5b9a\u4e49\u7c7b\u3002\u5927\u5bb6\u53ef\u4ee5\u7528\u81ea\u5df1\u7684\u7c7b\u9002\u5f53\u5bf9\u5176\u52a0\u4ee5\u8865\u5145\u3002<\/p>\n
\u7b2c\u4e8c\u6b65<\/strong><\/p>\n
\u518d\u6765\u770bActivity\u7c7b\u4e2d\u7684\u8d77\u59cb\u884c\u3002\u8bf7\u8bb0\u4f4f\uff0c\u6211\u4eec\u6dfb\u52a0\u4e86\u201cimplements OnClickLisener\u201d\u6765\u5904\u7406UI\u4e2d\u7684\u6309\u94ae\u70b9\u51fb\u64cd\u4f5c\u3002\u8fd9\u5c06\u901a\u8fc7\u5f15\u7528\u88ab\u5b9e\u65bd\u5728\u754c\u9762\u5f53\u4e2d\u3002\u754c\u9762\u7c7b\u4f3c\u4e8e\u4e00\u4e2a\u6211\u4eec\u5229\u7528\u201cextends\u201d\u7ee7\u627f\u800c\u6765\u7684\u7c7b\uff0c\u53ea\u4e0d\u8fc7\u754c\u9762\u58f0\u660e\u53ea\u9700\u7b80\u5355\u7f57\u5217\u65b9\u6cd5\u6982\u8ff0\u3002\u5927\u5bb6\u9700\u8981\u5bf9\u6bcf\u4e00\u9879\u6982\u8ff0\u8fdb\u884c\u65b9\u6cd5\u5b9e\u65bd\u3002\u56e0\u6b64\u5f53\u6211\u4eec\u5b9e\u65bdOnClickListener\u65f6\uff0c\u9700\u8981\u59d4\u6258\u8be5\u7c7b\u63d0\u4f9b\u4e00\u4e2aonClick\u65b9\u6cd5\u2014\u2014\u6b63\u5982\u6211\u4eec\u5728\u4e4b\u524d\u7684Android\u9879\u76ee\u4e2d\u6240\u505a\u3002\u56e0\u6b64\u754c\u9762\u7c7b\u4f3c\u4e8e\u4e00\u9879\u534f\u5b9a\u3002\u5728\u7ee7\u627f\u673a\u5236\u7684\u8f85\u52a9\u4e0b\uff0c\u6269\u5c55\u7c7b\u80fd\u591f\u7ee7\u627f\u7531\u7c7b\u58f0\u660e\u6240\u63d0\u4f9b\u7684\u3001\u7528\u4e8e\u5b9e\u73b0\u8d85\u7c7b\uff08\u5373\u7ecf\u8fc7\u6269\u5c55\u7684\u7c7b\uff09\u7684\u65b9\u6cd5\u5b9e\u65bd\u3002\u5982\u679c\u9700\u8981\uff0c\u5927\u5bb6\u53ef\u4ee5\u8986\u76d6\u8fd9\u4e9b\u5b9e\u65bd\u5185\u5bb9\u3002<\/p>\n
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