{"id":10008174,"date":"2023-08-28T15:00:06","date_gmt":"2023-08-28T07:00:06","guid":{"rendered":"https:\/\/blog.itmax.cn\/?p=10008174"},"modified":"2023-08-28T15:00:06","modified_gmt":"2023-08-28T07:00:06","slug":"%e4%bb%8e%e5%8e%9f%e7%90%86%e8%81%8ajvm%ef%bc%88%e4%ba%94%ef%bc%89%ef%bc%9ajvm%e7%9a%84%e7%bc%96%e8%af%91%e8%bf%87%e7%a8%8b%e5%92%8c%e4%bc%98%e5%8c%96%e6%89%8b%e6%ae%b5-%e4%ba%ac%e4%b8%9c%e4%ba%91","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10008174","title":{"rendered":"\u4ece\u539f\u7406\u804aJVM\uff08\u4e94\uff09\uff1aJVM\u7684\u7f16\u8bd1\u8fc7\u7a0b\u548c\u4f18\u5316\u624b\u6bb5 | \u4eac\u4e1c\u4e91\u6280\u672f\u56e2\u961f"},"content":{"rendered":"

\u4e00\u3001\u524d\u7aef\u7f16\u8bd1<\/strong><\/h2>\n

\u524d\u7aef\u7f16\u8bd1\u5c31\u662f\u5c06Java\u6e90\u7801\u6587\u4ef6\u7f16\u8bd1\u6210Class\u6587\u4ef6\u7684\u8fc7\u7a0b\uff0c\u7f16\u8bd1\u8fc7\u7a0b\u5206\u4e3a4\u6b65\uff1a<\/p>\n

1 \u51c6\u5907<\/strong><\/h3>\n

\u521d\u59cb\u5316\u63d2\u5165\u5f0f\u6ce8\u89e3\u5904\u7406\u5668\uff08Annotation Processing Tool\uff09\u3002<\/p>\n

2 \u89e3\u6790\u4e0e\u586b\u5145\u7b26\u53f7\u8868<\/strong><\/h3>\n

\u5c06\u6e90\u4ee3\u7801\u7684\u5b57\u7b26\u6d41\u8f6c\u53d8\u4e3a\u6807\u8bb0\uff08Token\uff09\u96c6\u5408\uff0c\u6784\u9020\u51fa\u62bd\u8c61\u8bed\u6cd5\u6811\uff08AST\uff09<\/code>\u3002<\/p>\n

\u62bd\u8c61\u8bed\u6cd5\u6811\u6bcf\u4e2a\u8282\u70b9\u90fd\u4ee3\u8868\u7740\u7a0b\u5e8f\u4ee3\u7801\u4e2d\u7684\u4e00\u4e2a\u8bed\u6cd5\u7ed3\u6784\uff0c\u5305\u542b\u5305\u3001\u7c7b\u578b\u3001\u4fee\u9970\u7b26\u3001\u8fd0\u7b97\u7b26\u3001\u63a5\u53e3\u3001\u8fd4\u56de\u503c\u3001\u4ee3\u7801\u6ce8\u91ca\u7b49\u5185\u5bb9\u3002<\/p>\n

\u7f16\u8bd1\u5668\u7684\u540e\u7eed\u884c\u4e3a\u90fd\u662f\u57fa\u4e8e\u62bd\u8c61\u8bed\u6cd5\u6811\u6765\u8fdb\u884c\u3002<\/p>\n

\u7b26\u53f7\u8868\u53ef\u4ee5\u7406\u89e3\u4e3a\u4e00\u4e2aK-V\u7ed3\u6784\u7684\u96c6\u5408\uff0c\u5b58\u50a8\u4e86\u4ee5\u4e0b\u4fe1\u606f\uff1a<\/p>\n

    \n
  • \u53d8\u91cf\u540d\u548c\u5e38\u91cf<\/li>\n
  • \u8fc7\u7a0b\u548c\u51fd\u6570\u540d\u79f0<\/li>\n
  • \u6587\u5b57\u5e38\u91cf\u548c\u5b57\u7b26\u4e32<\/li>\n
  • \u7f16\u8bd1\u5668\u751f\u6210\u7684\u4e34\u65f6\u6587\u4ef6<\/li>\n
  • \u6e90\u8bed\u8a00\u4e2d\u7684\u6807\u7b7e<\/li>\n<\/ul>\n

    \u7f16\u8bd1\u5668\u5728\u8fd0\u884c\u8fc7\u7a0b\u4e2d\u4f1a\u901a\u8fc7\u7b26\u53f7\u8868\u6765\u65b9\u4fbf\u67e5\u627e\u6240\u6709\u6807\u8bc6\u3002<\/p>\n

    3 \u6ce8\u89e3\u5904\u7406\u5668<\/strong><\/h3>\n

    \u6ce8\u89e3\u5904\u7406\u5668\u53ef\u4ee5\u770b\u505a\u662f\u4e00\u7ec4\u7f16\u8bd1\u5668\u7684\u63d2\u4ef6\uff0c\u7528\u6765\u8bfb\u5199\u62bd\u8c61\u8bed\u6cd5\u6811\u4e2d\u4efb\u610f\u5143\u7d20\u3002<\/p>\n

    \u7b80\u5355\u6765\u8bf4\uff0c\u6ce8\u89e3\u5904\u7406\u5668\u7684\u4f5c\u7528\u5c31\u662f\u8ba9\u7f16\u8bd1\u5668\u5bf9\u7279\u5b9a\u6ce8\u89e3\u6267\u884c\u7279\u5b9a\u903b\u8f91\uff0c\u4e00\u822c\u7528\u6765\u751f\u6210\u4ee3\u7801\uff0c\u6bd4\u5982\u5e38\u7528\u7684lombok\u548cmapstruct\u90fd\u662f\u57fa\u4e8e\u6b64\u3002<\/p>\n

    \u5982\u679c\u5728\u8fd9\u671f\u95f4\u8bed\u6cd5\u6811\u88ab\u4fee\u6539\u4e86\uff0c\u7f16\u8bd1\u5668\u5c06\u56de\u5230\u201c\u89e3\u6790\u4e0e\u586b\u5145\u7b26\u53f7\u8868\u201d\u7684\u8fc7\u7a0b\u91cd\u65b0\u5904\u7406\uff0c\u8fd9\u4e2a\u5faa\u73af\u88ab\u79f0\u4f5c\u201c\u8f6e\u6b21\uff08Round\uff09\u201d\u3002<\/p>\n

    \u8fd9\u662f\u5f00\u53d1\u4eba\u5458\u552f\u4e00\u80fd\u63a7\u5236\u7f16\u8bd1\u5668\u884c\u4e3a\u7684\u65b9\u5f0f\u3002<\/p>\n

    4 \u5206\u6790\u4e0e\u5b57\u8282\u7801\u751f\u6210<\/strong><\/h3>\n

    \u524d\u7f6e\u6b65\u9aa4\u53ef\u4ee5\u6210\u529f\u751f\u6210\u4e00\u4e2a\u7ed3\u6784\u6b63\u786e\u7684\u8bed\u6cd5\u6811\uff0c\u8bed\u4e49\u5206\u6790\u5219\u662f\u6821\u9a8c\u8bed\u6cd5\u6811\u662f\u5426\u7b26\u5408\u903b\u8f91\u3002<\/p>\n

    \u8bed\u4e49\u5206\u6790\u53c8\u5206\u4e3a\u56db\u6b65\uff1a<\/p>\n

    4.1 \u6807\u6ce8\u68c0\u67e5<\/h5>\n

    \u6807\u6ce8\u68c0\u67e5\u4e3b\u8981\u7528\u6765\u68c0\u67e5\u8868\u91cf\u662f\u5426\u88ab\u58f0\u660e\u3001\u53d8\u91cf\u4e0e\u8d4b\u503c\u662f\u5426\u5339\u914d\u7b49\u7b49\u3002<\/p>\n

    \u5728\u8fd9\u4e2a\u9636\u6bb5\uff0c\u8fd8\u4f1a\u8fdb\u884c\u88ab\u79f0\u4f5c\u201c\u5e38\u91cf\u6298\u53e0\u201d\u7684\u4f18\u5316\uff0c\u6bd4\u5982Java\u4ee3\u7801int a = 1 + 2;<\/code>\uff0c\u5b9e\u9645\u7f16\u8bd1\u540e\u4f1a\u88ab\u6298\u53e0\u4e3aint a = 3<\/code>\uff1b<\/p>\n

    4.2 \u6570\u636e\u53ca\u63a7\u5236\u6d41\u5206\u6790<\/h5>\n

    \u6570\u636e\u6d41\u5206\u6790\u548c\u63a7\u5236\u6d41\u5206\u6790\u662f\u5bf9\u7a0b\u5e8f\u4e0a\u4e0b\u6587\u903b\u8f91\u66f4\u8fdb\u4e00\u6b65\u7684\u9a8c\u8bc1\uff0c\u5b83\u53ef\u4ee5\u68c0\u67e5\u51fa\u8bf8\u5982\u7a0b\u5e8f\u5c40\u90e8\u53d8\u91cf\u5728\u4f7f\u7528\u524d\u662f\u5426\u6709\u8d4b\u503c\u3001\u65b9\u6cd5\u7684\u6bcf\u6761\u8def\u5f84\u662f\u5426\u90fd\u6709\u8fd4\u56de\u503c\u3001\u662f\u5426\u6240\u6709\u7684\u53d7\u67e5\u5f02\u5e38\u90fd\u88ab\u6b63\u786e\u5904\u7406\u4e86\u7b49\u95ee\u9898\u3002<\/p>\n

    4.3 \u89e3\u8bed\u6cd5\u7cd6<\/h5>\n

    Java\u4e2d\u5b58\u5728\u975e\u5e38\u591a\u7684\u8bed\u6cd5\u7cd6\u7528\u6765\u7b80\u5316\u4ee3\u7801\u5b9e\u73b0\uff0c\u6bd4\u5982\u81ea\u52a8\u7684\u88c5\u7bb1\u62c6\u7bb1\u3001\u6cdb\u578b\u3001\u53d8\u957f\u53c2\u6570\u7b49\u7b49\u3002\u8fd9\u4e9b\u8bed\u6cd5\u7cd6\u4f1a\u5728\u7f16\u8bd1\u5668\u88ab\u8fd8\u539f\u4e3a\u57fa\u7840\u8bed\u6cd5\u7ed3\u6784\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u88ab\u79f0\u4e3a\u89e3\u8bed\u6cd5\u7cd6\u3002<\/p>\n

    4.4 \u5b57\u8282\u7801\u751f\u6210<\/h5>\n

    \u8fd9\u662fjavac<\/code>\u7f16\u8bd1\u8fc7\u7a0b\u7684\u6700\u7ec8\u9636\u6bb5\uff0c\u7f16\u8bd1\u5668\u4f1a\u5728\u8fd9\u4e2a\u9636\u6bb5\u628a\u524d\u9762\u751f\u6210\u7684\u62bd\u8c61\u8bed\u6cd5\u6811\u3001\u7b26\u53f7\u8868\u751f\u6210\u4e3aclass\u6587\u4ef6\uff0c\u8fd8\u8fdb\u884c\u4e86\u5c11\u91cf\u7684\u4ee3\u7801\u6dfb\u52a0\u548c\u8f6c\u6362\u3002<\/p>\n

    \u4e8c\u3001\u8fd0\u884c\u65f6\u7f16\u8bd1<\/strong><\/h2>\n

    \u8fd0\u884c\u65f6\u7f16\u8bd1\u7684\u4e3b\u8981\u76ee\u7684\u662f\u4e3a\u4e86\u5c06\u4ee3\u7801\u7f16\u8bd1\u6210\u672c\u5730\u4ee3\u7801\uff0c\u4ece\u800c\u8282\u7701\u89e3\u91ca\u6267\u884c\u7684\u65f6\u95f4\u3002<\/p>\n

    \u4f46\u662fJVM\u5e76\u4e0d\u662f\u542f\u52a8\u540e\u7acb\u523b\u5f00\u59cb\u6267\u884c\u7f16\u8bd1\uff0c\u800c\u662f\u4e3a\u4e86\u6267\u884c\u6548\u7387\u5148\u8fdb\u884c\u89e3\u91ca\u6267\u884c\u3002\u7b49\u5230\u7a0b\u5e8f\u8fd0\u884c\u8fc7\u7a0b\u4e2d\uff0c\u6839\u636e\u70ed\u70b9\u63a2\u6d4b\uff0c\u627e\u51fa\u70ed\u70b9\u4ee3\u7801\u540e\uff0c\u5bf9\u5176\u8fdb\u884c\u9488\u5bf9\u6027\u7684\u7f16\u8bd1\u6765\u9010\u6e10\u4ee3\u66ff\u89e3\u91ca\u6267\u884c\u3002\u6240\u4ee5HotSpot JVM\u91c7\u7528\u7684\u662f\u89e3\u91ca\u5668\u548c\u5373\u65f6\u7f16\u8bd1\u5668\u5e76\u5b58\u7684\u67b6\u6784\u3002<\/p>\n

    1 \u4f7f\u7528\u7f16\u8bd1\u6267\u884c\u7684\u65f6\u673a<\/strong><\/h3>\n

    Sun JDK\u4e3b\u8981\u6839\u636e\u65b9\u6cd5\u4e0a\u7684\u4e00\u4e2a\u8ba1\u6570\u5668\u6765\u8ba1\u7b97\u662f\u5426\u8d85\u8fc7\u9608\u503c\uff0c\u5982\u679c\u8d85\u8fc7\u5219\u91c7\u7528\u7f16\u8bd1\u6267\u884c\u7684\u65b9\u5f0f\u3002<\/p>\n

      \n
    • \u8c03\u7528\u8ba1\u6570\u5668<\/li>\n<\/ul>\n

      \u8bb0\u5f55\u65b9\u6cd5\u8c03\u7528\u6b21\u6570\uff0c\u5728client\u6a21\u5f0f\u4e0b\u9ed8\u8ba4\u4e3a1500\u6b21\uff0c\u5728server\u6a21\u5f0f\u4e0b\u9ed8\u8ba4\u4e3a10000\u6b21\uff0c\u53ef\u901a\u8fc7-XX:CompileThreshold=10000<\/code>\u6765\u8bbe\u7f6e<\/p>\n

        \n
      • \u56de\u8fb9\u8ba1\u6570\u5668<\/li>\n<\/ul>\n

        \u5faa\u73af\u6267\u884c\u90e8\u5206\u4ee3\u7801\u7684\u6267\u884c\u6b21\u6570\uff0c\u9ed8\u8ba4\u5728client\u6a21\u5f0f\u65f6\u4e3a933\uff0c\u5728server\u6a21\u5f0f\u4e0b\u4e3a140\uff0c\u53ef\u901a\u8fc7-XX:OnStackReplacePercentage=140<\/code>\u6765\u8bbe\u7f6e<\/p>\n

        2 \u7f16\u8bd1\u6a21\u5f0f<\/strong><\/h3>\n

        \u5728\u7f16\u8bd1\u4e0a\uff0cSun JDK\u63d0\u4f9b\u4e24\u79cd\u6a21\u5f0f\uff1aclient compiler(-client)\u548cserver compiler(-server)<\/p>\n

        2.1 Client compiler<\/h4>\n

        \u53c8\u79f0C1\uff0c\u8f83\u4e3a\u8f7b\u91cf\u7ea7\uff0c\u4e3b\u8981\u5305\u62ec\u4ee5\u4e0b\u51e0\u65b9\u9762\uff1a<\/p>\n

        2.1.1 \u65b9\u6cd5\u5185\u8054<\/h5>\n

        \u7f16\u8bd1\u5668\u6240\u505a\u6700\u91cd\u8981\u7684\u4f18\u5316\u662f\u65b9\u6cd5\u5185\u8054<\/p><\/blockquote>\n

        \u9075\u5faa\u9762\u5411\u5bf9\u8c61\u8bbe\u8ba1\uff0c\u5c5e\u6027\u8bbf\u95ee\u901a\u5e38\u901a\u8fc7setter\/getter\u65b9\u6cd5\u800c\u975e\u76f4\u63a5\u8c03\u7528\uff0c\u800c\u6b64\u7c7b\u65b9\u6cd5\u8c03\u7528\u7684\u5f00\u9500\u5f88\u5927\uff0c\u7279\u522b\u662f\u76f8\u5bf9\u65b9\u6cd5\u7684\u4ee3\u7801\u91cf\u800c\u8a00\u3002<\/p>\n

        \u73b0\u5728\u7684JVM\u901a\u5e38\u90fd\u4f1a\u7528\u5185\u8054\u4ee3\u7801\u7684\u65b9\u5f0f\u6267\u884c\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u4e3e\u4e2a\u4f8b\u5b50\uff1a<\/p>\n

        Order o = new Order();\no.setTotalAmount(o.getOrderAmount() * o.getCount());\n<\/code><\/pre>\n
        \u800c\u7f16\u8bd1\u540e\u7684\u4ee3\u7801\u672c\u8d28\u4e0a\u6267\u884c\u7684\u662f\uff1a<\/p>\n
        Order o = new Order();\no.orderAmount = o.orderAmount * o.count;\n<\/code><\/pre>\n
        \u5185\u8054\u9ed8\u8ba4\u662f\u5f00\u542f\u7684\uff0c\u53ef\u901a\u8fc7-XX:-Inline<\/code>\u5173\u95ed\uff0c\u7136\u800c\u7531\u4e8e\u5b83\u5bf9\u6027\u80fd\u5f71\u54cd\u5de8\u5927\uff0c\u5e76\u4e0d\u5efa\u8bae\u5173\u95ed\u3002<\/p>\n
        \u65b9\u6cd5\u662f\u5426\u5185\u8054\u53d6\u51b3\u4e8e\u5b83\u6709\u591a\u70ed\u4ee5\u53ca\u5b83\u7684\u5927\u5c0f<\/strong>\u3002<\/p>\n
        2.1.2 \u53bb\u865a\u62df\u5316<\/h5>\n
        \u5982\u53d1\u73b0\u7c7b\u4e2d\u7684\u65b9\u6cd5\u53ea\u63d0\u4f9b\u4e86\u4e00\u4e2a\u5b9e\u73b0\u7c7b\uff0c\u90a3\u4e48\u5bf9\u4e8e\u8c03\u7528\u4e86\u6b64\u65b9\u6cd5\u7684\u4ee3\u7801\uff0c\u5c06\u8fdb\u884c\u65b9\u6cd5\u5185\u8054<\/p>\n
        public interface Animal {\n  void eat();\n}\n\npublic class Cat implements Animal {\n  @Override\n  public void eat() {\n    System.out.println("Cat eat !");\n  }\n}\n\npublic class Demo {\n  public void execute(Animal animal){\n    animal.eat();\n  }\n}\n<\/code><\/pre>\n
        \u5982\u679cJVM\u4e2d\u53ea\u6709Cat\u7c7b\u5b9e\u73b0\u4e86Animal\u63a5\u53e3\uff0cexecute()<\/code>\u65b9\u6cd5\u88ab\u7f16\u8bd1\u65f6\uff0c\u4f1a\u6f14\u53d8\u6210\u7c7b\u4f3c\u5982\u4e0b\u7ed3\u6784\uff1a<\/p>\n
        public void execute() {\n  System.out.println("Cat eat !");\n}\n<\/code><\/pre>\n
        \u5373execute()<\/code>\u65b9\u6cd5\u76f4\u63a5\u5185\u8054\u4e86Cat<\/code>\u7c7b\u4e2deat()<\/code>\u65b9\u6cd5\u7684\u5185\u90e8\u903b\u8f91\u3002<\/p>\n
        2.1.3 \u5197\u4f59\u6d88\u9664<\/h5>\n
        \u5197\u4f59\u6d88\u9664\u6307\u5728\u7f16\u8bd1\u65f6\uff0c\u6839\u636e\u8fd0\u884c\u60c5\u51b5\u8fdb\u884c\u4ee3\u7801\u6298\u53e0\u6216\u8005\u6d88\u9664<\/p>\n
        \u4f8b\u5982\uff1a<\/p>\n
        private static final boolean isDebug = false;\n\npublic void execute() {\n  if (isDebug) {\n    log.debug("do execute.");\n  }\n  System.out.println("done");\n}\n<\/code><\/pre>\n
        \u5728\u6267\u884cC1\u7f16\u8bd1\u540e\uff0c\u4f1a\u6f14\u53d8\u6210\u5982\u4e0b\u7ed3\u6784\uff1a<\/p>\n
        public void execute() {\n  System.out.println("done");\n}\n<\/code><\/pre>\n
        \u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\uff0c\u901a\u5e38\u4e0d\u5efa\u8bae\u76f4\u63a5\u8c03\u7528log.debug()<\/code>\uff0c\u800c\u8981\u5148\u5224\u65ad\u7684\u539f\u56e0\u3002<\/p>\n
        2.2 Server complier<\/h4>\n
        \u53c8\u79f0C2\uff0c\u8f83C1\u66f4\u4e3a\u91cd\u91cf\u7ea7\uff0cC2\u66f4\u591a\u5728\u4e8e\u5168\u5c40\u4f18\u5316\uff0c\u800c\u975e\u4ee3\u7801\u5757\u7684\u4f18\u5316\u3002<\/p>\n
        \u9003\u9038\u5206\u6790<\/p>\n
        \u9003\u9038\u5206\u6790\u6307\u7684\u662f\u6839\u636e\u8fd0\u884c\u72b6\u51b5\u6765\u5224\u65ad\u65b9\u6cd5\u4e2d\u53d8\u91cf\u662f\u5426\u4f1a\u88ab\u65b9\u6cd5\u5916\u90e8\u8bfb\u53d6\uff0c\u5982\u679c\u88ab\u5916\u90e8\u8bfb\u53d6\uff0c\u5219\u8ba4\u4e3a\u662f\u9003\u9038\u7684\u3002<\/p>\n
        \u5982\u679c\u901a\u8fc7\u547d\u4ee4-XX\uff1a+DoEscapeAnalysis<\/code>\uff08\u9ed8\u8ba4\u4e3atrue\uff09\u5f00\u542f\u9003\u9038\u5206\u6790\uff0cserver\u7f16\u8bd1\u5668\u4f1a\u6267\u884c\u8f83\u4e3a\u6fc0\u8fdb\u7684\u4f18\u5316\u63aa\u65bd\u3002<\/p>\n
        2.2.1 \u6807\u91cf\u66ff\u6362<\/h5>\n
        Point point = new Point(1, 2);\nSystem.out.println("point.x = " + point.x + "; point.y" + point.y);\n<\/code><\/pre>\n
        \u5f53point\u5bf9\u8c61\u5728\u540e\u9762\u6267\u884c\u8fc7\u7a0b\u4e2d\u672a\u88ab\u4f7f\u7528\u5230\u65f6\uff0c\u4ee3\u7801\u7ecf\u8fc7\u7f16\u8bd1\u4f1a\u6f14\u53d8\u4e3a\u5982\u4e0b\u7ed3\u6784\uff1a<\/p>\n
        int x = 1, y = 2;\nSystem.out.println("point.x = " + x + "; point.y" + y);\n<\/code><\/pre>\n
        2.2.2 \u6808\u4e0a\u5206\u914d<\/h5>\n
        \u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u5982\u679cpoint<\/code>\u6ca1\u6709\u9003\u9038\uff0c\u90a3\u4e48C2\u4f1a\u9009\u62e9\u5728\u6808\u4e0a\u76f4\u63a5\u521b\u5efapoint<\/code>\u5bf9\u8c61\uff0c\u800c\u975e\u5806\u4e0a\u3002<\/p>\n
        \u5728\u6808\u4e0a\u5206\u914d\u7684\u597d\u5904\u4e00\u65b9\u9762\u662f\u5bf9\u8c61\u521b\u5efa\u66f4\u52a0\u5feb\u901f\uff0c\u53e6\u4e00\u65b9\u9762\u662f\u56de\u6536\u65f6\u968f\u7740\u65b9\u6cd5\u7684\u7ed3\u675f\uff0c\u5bf9\u8c61\u4e5f\u88ab\u56de\u6536\u4e86\u3002<\/p>\n
        2.2.3 \u540c\u6b65\u524a\u9664<\/h5>\n
        Point point = new Point(1, 2);\nsynchronized(point) { \u00a0\n  System.out.println("point.x = " + point.x);\n}\n<\/code><\/pre>\n
        \u7ecf\u8fc7\u5206\u6790\u5982\u679c\u53d1\u73b0point<\/code>\u672a\u9003\u9038\uff0c\u5219\u4ee3\u7801\u4f1a\u5728\u7f16\u8bd1\u540e\u53d8\u6210\u5982\u4e0b\u7ed3\u6784\uff1a<\/p>\n
        Point point = new Point(1, 2);\nSystem.out.println("point.x = " + point.x);\n<\/code><\/pre>\n
        2.3 OSR\uff08On Stack Replace\uff0c\u6808\u4e0a\u66ff\u6362\uff09<\/h4>\n
        OSR\u548cC1\u3001C2\u4e3b\u8981\u4e0d\u540c\u5728\u4e8e\uff0cOSR\u4ec5\u4ec5\u66ff\u6362\u5faa\u73af\u4ee3\u7801\u4f53\u7684\u5165\u53e3<\/strong>\uff0c\u800cC1\u3001C2\u66ff\u6362\u7684\u662f\u65b9\u6cd5\u8c03\u7528\u7684\u5165\u53e3\u3002<\/p>\n
        \u56e0\u6b64\u5728OSR\u7f16\u8bd1\u540e\u4f1a\u51fa\u73b0\u7684\u73b0\u8c61\u662f\uff0c\u65b9\u6cd5\u7684\u6574\u6bb5\u4ee3\u7801\u88ab\u7f16\u8bd1\u4e86\uff0c\u4f46\u53ea\u6709\u5728\u5faa\u73af\u4ee3\u7801\u4f53\u90e8\u5206\u624d\u6267\u884c\u7f16\u8bd1\u540e\u7684\u673a\u5668\u7801\uff0c\u800c\u5176\u4ed6\u90e8\u5206\u4ecd\u7136\u662f\u89e3\u91ca\u6267\u884c\u65b9\u5f0f\u3002<\/p>\n
        \u5982\u679c\u5bf9\u65b9\u6cd5\u8fdb\u884c\u7f16\u8bd1\u4f18\u5316\uff0c\u7b49JVM\u5728\u67d0\u4e2a\u65b9\u6cd5\u4e2d\u53d1\u73b0\u8fd9\u4e2a\u65b9\u6cd5\u5f88\u70ed\uff0c\u9700\u8981\u7f16\u8bd1\uff0c\u90a3\u4e48\u53ea\u6709\u4e0b\u6b21\u8c03\u7528\u8fd9\u4e2a\u65b9\u6cd5\u624d\u80fd\u4eab\u53d7\u5230\u88ab\u4f18\u5316\u540e\u7684\u4ee3\u7801\uff0c\u800c\u672c\u6b21\u8c03\u7528\u4f9d\u65e7\u4f7f\u7528\u4f18\u5316\u524d\u7684\u4ee3\u7801\u3002OSR\u4e3b\u8981\u5c31\u662f\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u6bd4\u5982JVM\u53d1\u73b0\u65b9\u6cd5\u4e2d\u8fd9\u4e2a\u5faa\u73af\u8fc7\u70ed\uff0c\u90a3\u4e48\u4ec5\u4ec5\u7f16\u8bd1\u8fd9\u4e2a\u5faa\u73af\u4f53\u5c31\u597d\u4e86\uff0c\u6267\u884c\u5f15\u64ce\u4e5f\u4f1a\u5728\u8fdb\u5165\u4e0b\u4e00\u4e2a\u5faa\u73af\u65f6\u8df3\u8f6c\u5230\u65b0\u7f16\u8bd1\u7684\u4ee3\u7801\u4e2d\u53bb\u3002<\/p>\n
        \n
        \u4f5c\u8005\uff1a\u4eac\u4e1c\u79d1\u6280 \u5eb7\u5fd7\u5174<\/p>\n
        \u6765\u6e90\uff1a\u4eac\u4e1c\u4e91\u5f00\u53d1\u8005\u793e\u533a \u8f6c\u8f7d\u8bf7\u6ce8\u660e\u6765\u6e90<\/p>\n<\/blockquote>\n
        https:\/\/segmentfault.com\/a\/1190000044155766<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
        \u4e00\u3001\u524d\u7aef\u7f16\u8bd1 \u524d\u7aef\u7f16\u8bd1\u5c31\u662f\u5c06Java\u6e90\u7801\u6587\u4ef6\u7f16\u8bd1\u6210Class\u6587\u4ef6\u7684\u8fc7\u7a0b\uff0c\u7f16\u8bd1\u8fc7\u7a0b\u5206\u4e3a4\u6b65\uff1a 1 \u51c6\u5907 \u521d\u59cb\u5316\u63d2 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-10008174","post","type-post","status-publish","format-standard","hentry","category-share"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10008174","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10008174"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10008174\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10008174"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10008174"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10008174"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}