{"id":31219,"date":"2023-10-01T12:59:01","date_gmt":"2023-05-11T06:41:29","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/java%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%af%ad%e6%b3%95\/"},"modified":"2025-08-12T22:54:20","modified_gmt":"2025-08-12T14:54:20","slug":"java%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%af%ad%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/java%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%af%ad%e6%b3%95\/","title":{"rendered":"Java\u7684\u57fa\u672c\u8bed\u6cd5"},"content":{"rendered":"

\u9996\u5148\u6211\u662f\u4e00\u4e2a23\u5c4a\u7684\u5de5\u7a0b\u5e08\uff0c\u5e76\u8ba1\u5212\u4f5c\u4e3a\u5de5\u7a0b\u5e08\u5de5\u4f5c\u3002
\n\u7531\u4e8e\u5728\u57f9\u8bad\u4e2d\u5b66\u4e60\u4e86Java\uff0c\u6240\u4ee5\u6211\u5c06\u8fdb\u884c\u603b\u7ed3\u3002
\n\u6559\u6750\u662f\u300aJava\u5165\u95e8\uff0c\u8f7b\u677e\u7406\u89e3\u300b\u3002<\/p>\n

 <\/p>\n

\u672c\u6587\u6db5\u76d6\u4e86\u7b2c\u4e00\u7ae0\u5230\u7b2c\u516d\u7ae0\u7684\u5185\u5bb9\uff0c\u7701\u7565\u4e86\u4e00\u4e9b\u7b80\u5355\u7684\u90e8\u5206\u3002<\/p>\n

\u7531\u4e8e\u5199\u4f5c\u65b9\u5f0f\u975e\u5e38\u7b80\u5316\uff0c\u6240\u4ee5\u5982\u679c\u6709\u4efb\u4f55\u7591\u95ee\u6216\u4e0d\u6e05\u695a\u7684\u5730\u65b9\uff0c\u8bf7\u5404\u4f4d\u81ea\u884c\u89e3\u51b3\uff01\u5982\u679c\u6709\u9519\u8bef\u7684\u5730\u65b9\uff0c\u8bf7\u5e2e\u5fd9\u6307\u6b63\uff0c\u611f\u6fc0\u4e0d\u5c3d\u3002<\/p>\n

\u7b2c\u4e00\u7ae0\u5199\u7a0b\u5e8f\u7684\u65b9\u6cd5<\/p>\n
    \u578b\u3000\u5909\u6570\u540d\u3000= \u4ee3\u5165\u3059\u308b\u30c7\u30fc\u30bf\r\n<\/code><\/pre>\n
\u53ef\u4ee5\u58f0\u660e\u53d8\u91cf<\/p>\n
\u5f53\u5728\u58f0\u660e\u53d8\u91cf\u65f6\u52a0\u4e0aFinal\u5173\u952e\u5b57\uff0c\u53d8\u91cf\u5c31\u53d8\u6210\u4e86\u5e38\u91cf\u3002<\/p>\n
    Final \u578b\u540d\u3000\u5909\u6570\u540d = \u5024\r\n<\/code><\/pre>\n
\u6709\u591a\u79cd\u7c7b\u578b<\/p>\n
\n
\u5206\u985e\u578b\u540d\u6574\u6570byte\u6574\u6570short\u6574\u6570int\u6574\u6570long\u5c11\u6570float\u5c11\u6570double\u771f\u507d\u5024boolean\u6587\u5b57char\u6587\u5b57\u5217String\u4f7f\u7528\u7684\u9891\u7387<\/p>\n
\u662f\u4e00\u4e2a\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u6574\u6570\uff0c\u6574\u6570\u8f6c\u6362\u4e3a\u53cc\u7cbe\u5ea6\u6d6e\u70b9\u6570\uff0c\u53cc\u7cbe\u5ea6\u6d6e\u70b9\u6570\u8f6c\u6362\u4e3a\u5e03\u5c14\u503c\u6216\u5176\u4ed6\u7c7b\u578b\u7684\u8f6c\u6362\u3002<\/p>\n
\u7b2c\u4e8c\u7ae0\u7b97\u672f\u8868\u8fbe\u5f0f\u548c\u8fd0\u7b97\u7b26<\/p>\n
\u8f6c\u4e49\u5e8f\u5217<\/p>\n
    \"\u79c1\u306e\u597d\u304d\u306a\u8a18\u53f7\u306f\\\"\u3067\u3059\"\r\n<\/code><\/pre>\n
\u5728\u6587\u672c\u4e2d\u5305\u542b\u672c\u6765\u4e0d\u80fd\u5305\u542b\u7684\u7b26\u53f7<\/p>\n
\u5728\u753b\u9762\u4e0a\u663e\u793a\u6587\u5b57<\/p>\n
    System.our.println(a);\r\n<\/code><\/pre>\n
\u5c06\u8f83\u5927\u7684\u6570\u503c\u8d4b\u503c\u7ed9\u53d8\u91cf\u3002<\/p>\n
    int m = Math.max(a,b);\r\n<\/code><\/pre>\n
\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u6570\u5b57<\/p>\n
    int n = Integer.parseInt(a);\r\n<\/code><\/pre>\n
\u751f\u6210\u5e76\u8d4b\u503c\u7ed9\u968f\u673a\u6570<\/p>\n
    int r = new java.util.Random().nextInt(a);\r\n<\/code><\/pre>\n
\u4ea7\u751f\u7684\u6574\u6570\u4ece0\u5230(a-1)\u3002<\/p>\n
\u4ece\u952e\u76d8\u63a5\u6536\u5b57\u7b26\u4e32\u8f93\u5165<\/p>\n
    String s = new java.util.Scanner(System.in).nextLine();\r\n<\/code><\/pre>\n
\u4ece\u952e\u76d8\u63a5\u6536\u6574\u6570\u8f93\u5165<\/p>\n
    int input = new java.util.Scanner(System.in).nextInt();\r\n<\/code><\/pre>\n
\u7b2c\u4e09\u7ae0\u5178\u578b\u7684\u7684\u63a7\u5236\u7ed3\u6784<\/p>\n
for\u5faa\u73af<\/p>\n
    if(\u5224\u5b9a\u6761\u4ef6){\r\n\r\n}else{\r\n    \r\n}\r\n<\/code><\/pre>\n
\u5728\u6bd4\u8f83\u5b57\u7b26\u65f6\uff0c\u8bf7\u4f7f\u7528\u8be5\u65b9\u6cd5\u3002<\/p>\n
\u4f7f\u7528\u6587\u5b57\u52171.equals(\u6587\u5b57\u52172)\u3002<\/p>\n
\u5207\u6362\u8bed\u53e5<\/p>\n
        Switch(\u5224\u5b9a\u3059\u308b\u3082\u306e){\r\n\r\n    case a:\r\n        break;\r\n\r\n    case b:\r\n        break;\r\n\r\n    case c:\r\n        break;\r\n\r\n    default:\r\n}\r\n<\/code><\/pre>\n
\u5f53……\u7684\u65f6\u5019<\/p>\n
    while(\u5224\u5b9a\u6761\u4ef6){\r\n    \r\n}\r\n<\/code><\/pre>\n
\u4f7f\u7528do-while\u5faa\u73af<\/p>\n
    do{\r\n\r\n}while(\u5224\u5b9a\u6761\u4ef6)\r\n<\/code><\/pre>\n
\u4e0e while \u5faa\u73af\u4e0d\u540c\uff0c\u8fd9\u4e2a\u90e8\u5206\u88ab\u4fdd\u8bc1\u4f1a\u6267\u884c\u4e00\u6b21<\/p>\n
\u5faa\u73af\u8bed\u53e5<\/p>\n
    for(int i = 0; i<x; i++){\r\n    \r\n}\r\n<\/code><\/pre>\n
\u7b2c\u56db\u7ae0\u6570\u7ec4<\/p>\n
\u4e00\u7ef4\u6570\u7ec4\u58f0\u660e<\/p>\n
    \u8981\u7d20\u306e\u578b [] \u914d\u5217\u5909\u6570\u540d = new \u8981\u7d20\u306e\u578b[\u500b\u6570]\r\n<\/code><\/pre>\n
\u5c06\u4ee5\u4e0b\u5185\u5bb9\u4ee3\u5165<\/p>\n
    \u8981\u7d20\u306e\u578b [] \u914d\u5217\u5909\u6570\u540d = new \u8981\u7d20\u306e\u578b[] {\u8981\u7d201,\u8981\u7d202,...}\r\n\r\n    \u8981\u7d20\u306e\u578b [] \u914d\u5217\u5909\u6570\u540d = {\u8981\u7d201,\u8981\u7d202,...}\r\n<\/code><\/pre>\n
\u4e8c\u7ef4\u6570\u7ec4 sh\u00f9\u53d1\u8868\u58f0\u660e<\/p>\n
    \u8981\u7d20\u306e\u578b[][] \u914d\u5217\u5909\u6570\u540d = new \u8981\u7d20\u306e\u578b[\u884c\u6570][\u5217\u6570]\r\n<\/code><\/pre>\n
\u7b2c\u4e94\u7ae0\u65b9\u6cd5<\/p>\n
\u65b9\u6cd5\u7684\u5b9a\u4e49 de<\/p>\n
    public static \u623b\u308a\u5024\u306e\u578b\u3000\u30e1\u30bd\u30c3\u30c9\u540d(\u5f15\u6570){\r\n                    \u51e6\u7406;\r\n    }\r\n<\/code><\/pre>\n
\u8c03\u7528\u65b9\u6cd5<\/p>\n
        \u30e1\u30bd\u30c3\u30c9\u540d\uff08\u5f15\u6570\uff09;\r\n<\/code><\/pre>\n
\u5728\u4e2d\u6587\u4e2d\u51c6\u786e\u5730\u8868\u8fbe\u8fd9\u53e5\u8bdd\uff0c\u53ea\u9700\u8981\u4e00\u79cd\u9009\u62e9\uff1a<\/p>\n
\u4f20\u9012\u7684\u53c2\u6570\u662f\uff1f<\/p>\n
        \u5f15\u6570\u306e\u578b\u3000\u5f15\u6570\r\n<\/code><\/pre>\n
\u5177\u4f53\u6765\u8bf4\uff0c\u8fd9\u662f\u4e00\u4e2a\u5ba3\u8a00\u3002<\/p>\n
         setAge(int age)\r\n<\/code><\/pre>\n
\u8d85\u8f7d\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u65b9\u6cd5\u540d\u4e0d\u80fd\u91cd\u590d\uff0c\u4f46\u5982\u679c\u53c2\u6570\u4e0d\u540c\uff0c\u5219\u53ef\u4ee5\u4f7f\u7528\u76f8\u540c\u7684\u65b9\u6cd5\u540d<\/p>\n
\u7b2c\u516d\u7ae0\u5c06\u4e00\u4e2a\u6587\u4ef6\u62c6\u6210\u591a\u4e2a\u6587\u4ef6\u5bf9\u5e94\u4e0d\u540c\u7684\u7c7b\uff0c\u8fd9\u6837\u53ef\u4ee5\u907f\u514d\u5728\u540c\u4e00\u4e2a\u6587\u4ef6\u91cc\u8fc7\u4e8e\u62e5\u6324\u7684\u5199\u5165\uff0c\u4f7f\u5f97\u4ee3\u7801\u66f4\u6613\u8bfb\u3002<\/p>\n
\u5c06\u6e90\u6587\u4ef6\u5206\u5272\u5f53\u8c03\u7528\u5176\u4ed6\u6587\u4ef6\u7684\u51fd\u6570\u65f6<\/p>\n
    \u30d5\u30a1\u30a4\u30eb\u540d.\u95a2\u6570\u540d(\u5f15\u6570)\r\n<\/code><\/pre>\n
\u4ee5\u4e0b\u662f\u4e2d\u56fd\u7684\u4e00\u4e2a\u4f8b\u5b50<\/p>\n
public<\/span> class<\/span> Main<\/span>{<\/span>\r\n    public<\/span> static<\/span> void<\/span> main<\/span>(<\/span>String<\/span>[]<\/span> args<\/span>){<\/span>\r\n        int<\/span> x<\/span> =<\/span> AddNumber<\/span>.<\/span>add<\/span>(<\/span>1<\/span> ,<\/span> 2<\/span>);<\/span>\r\n        System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>x<\/span>);<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n\r\n<\/code><\/pre>\n
public<\/span> class<\/span> AddNumber<\/span> {<\/span>\r\n    public<\/span> static<\/span> int<\/span> add<\/span>(<\/span>int<\/span> x<\/span>,<\/span> int<\/span> y<\/span>){<\/span>\r\n        return<\/span> x<\/span> +<\/span> y<\/span>;<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5305\u88c5\u53e6\u5916\uff0c\u53ef\u4ee5\u6309\u7167\u6587\u4ef6\u5939\u5c42\u6b21\u7ed3\u6784\u5c06\u5305\u5f52\u5c5e\u5230\u76f8\u5e94\u7684\u5305\u4e2d\u3002<\/p>\n
\u52a0\u5165\u4e00\u4e2a\u5305\u88c5\u6d3b\u52a8\u4e2d\u3002<\/p>\n
    package \u30d5\u30a9\u30eb\u30c0\u968e\u5c64\r\n<\/code><\/pre>\n
\u9700\u8981\u63cf\u8ff0<\/p>\n
\u4e0e\u6e90\u6587\u4ef6\u5206\u5272\u76f8\u4f3c<\/p>\n
    \u30d5\u30a9\u30eb\u30c0\u968e\u5c64.\u95a2\u6570\u540d()\r\n<\/code><\/pre>\n
\u5f53\u4f60\u89c9\u5f97\u8c03\u7528\u51fd\u6570\u5f88\u9ebb\u70e6\u7684\u65f6\u5019\uff0c\u53ef\u4ee5\u4f7f\u7528\u5bfc\u5165\u8bed\u53e5\u3002<\/p>\n
    import \u30d5\u30a9\u30eb\u30c0\u968e\u5c64\r\n<\/code><\/pre>\n
\u53ef\u4ee5\u5c06\u6587\u4ef6\u540d.\u51fd\u6570\u540d()\u4f5c\u4e3a\u8c03\u7528<\/p>\n
\u4ee5\u6c61\u67d3\u6cbb\u7406\u884c\u52a8\u8ba1\u5212\u4e3a\u4f8b\uff0c\u8be5\u653f\u7b56\u65e8\u5728\u63d0\u9ad8\u7a7a\u6c14\u8d28\u91cf\uff0c\u4fc3\u8fdb\u53ef\u6301\u7eed\u53d1\u5c55\u3002\u6587\u4ef6\u5939\u5c42\u7ea7<\/p>\n
    PracticeJava\r\n          \u2503\r\n          \u2523Calc\r\n          \u2503   \u2517 AddNumber.java\r\n          \u2503      \r\n          \u2517Main.java\r\n<\/code><\/pre>\n
\u53ef\u80fd\u6709\u70b9\u96be\u770b\u6e05\u695a\u3002<\/p>\n
\u6ca1\u6709import\u5e93<\/p>\n
\r\npackage<\/span> PracticeJava<\/span>;<\/span>\r\n\r\npublic<\/span> class<\/span> Main<\/span> {<\/span>\r\n    public<\/span> static<\/span> void<\/span> main<\/span>(<\/span>String<\/span>[]<\/span> args<\/span>){<\/span>\r\n        int<\/span> x<\/span> =<\/span> PracticeJava<\/span>.<\/span>Calc<\/span>.<\/span>AddNumber<\/span>.<\/span>add<\/span>(<\/span>1<\/span> ,<\/span> 2<\/span>);<\/span>\r\n        System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>x<\/span>);<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n\r\n<\/code><\/pre>\n
\r\npackage<\/span> PracticeJava.Calc<\/span>;<\/span>\r\n\r\npublic<\/span> class<\/span> AddNumber<\/span> {<\/span>\r\n    public<\/span> static<\/span> int<\/span> add<\/span>(<\/span>int<\/span> x<\/span>,<\/span> int<\/span> y<\/span>){<\/span>\r\n        return<\/span> x<\/span> +<\/span> y<\/span>;<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u6b63\u5982\u4ece Package \u90e8\u5206\u53ef\u4ee5\u770b\u51fa\uff0c\u5b83\u662f\u6309\u7167\u6587\u4ef6\u5939\u5c42\u7ea7\u8fdb\u884c\u6253\u5305\u7684\u3002
\n\uff08VS Code \u4f1a\u81ea\u52a8\u5b8c\u6210\u8fd9\u4e2a\u64cd\u4f5c\uff01\u975e\u5e38\u65b9\u4fbf\uff01\uff09
\n\u8981\u8c03\u7528 AddNumber \u6587\u4ef6\u4e2d\u7684\u51fd\u6570\uff0c\u9700\u8981\u6267\u884c\u4ee5\u4e0b\u64cd\u4f5c\uff1a<\/p>\n
    PracticeJava.Calc.AddNumber.add(\u5f15\u6570)\r\n<\/code><\/pre>\n
\u56e0\u6b64\uff0c\u5f15\u5165import\u8bed\u53e5\u53ef\u4ee5\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n
\u6709import<\/p>\n
package<\/span> PracticeJava<\/span>;<\/span>\r\nimport<\/span> PracticeJava.Calc.AddNumber<\/span>;<\/span>\r\n\r\npublic<\/span> class<\/span> Main<\/span> {<\/span>\r\n    public<\/span> static<\/span> void<\/span> main<\/span>(<\/span>String<\/span>[]<\/span> args<\/span>){<\/span>\r\n        int<\/span> x<\/span> =<\/span> AddNumber<\/span>.<\/span>add<\/span>(<\/span>1<\/span> ,<\/span> 2<\/span>);<\/span>\r\n        System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>x<\/span>);<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
package<\/span> PracticeJava.Calc<\/span>;<\/span>\r\n\r\npublic<\/span> class<\/span> AddNumber<\/span> {<\/span>\r\n    public<\/span> static<\/span> int<\/span> add<\/span>(<\/span>int<\/span> x<\/span>,<\/span> int<\/span> y<\/span>){<\/span>\r\n        return<\/span> x<\/span> +<\/span> y<\/span>;<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u901a\u8fc7\u5bfc\u5165\u5305\uff0c\u8c03\u7528\u51fd\u6570\u65f6\u65e0\u9700\u63cf\u8ff0\u5c42\u7ea7\uff01<\/p>\n
\u6700\u540e\u6211\u5199\u4e86\u5173\u4e8e\u57fa\u7840\u8bed\u6cd5\u7684\u5185\u5bb9\uff0c\u4f46\u662f\u5199\u5f97\u76f8\u5f53\u957f\u3002
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\n\u5982\u679c\u6709\u9519\u8bef\u7684\u8bdd\uff0c\u5e0c\u671b\u60a8\u80fd\u6307\u51fa\u6765\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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