{"id":60,"date":"2022-02-10T15:15:19","date_gmt":"2022-02-10T07:15:19","guid":{"rendered":"https:\/\/blog.zjia.me\/?p=60"},"modified":"2026-06-19T21:03:00","modified_gmt":"2026-06-19T13:03:00","slug":"java-%e5%a0%86%e6%a0%88%ef%bc%8c%e6%96%b9%e6%b3%95%e5%8c%ba%e6%b0%b8%e4%b9%85%e4%bb%a3%e7%9a%84%e7%90%86%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/blog.ttwow.top\/?p=60","title":{"rendered":"java \u5806\u6808\uff0c\u65b9\u6cd5\u533a(\u6c38\u4e45\u4ee3)\u7684\u7406\u89e3"},"content":{"rendered":"

\u8f6c\u8f7d\uff1a
\nhttps:\/\/www.cnblogs.com\/augus007\/articles\/10185796.html<\/a><\/a><\/p>\n<\/p>\n

\u6700\u8fd1\u5728\u770b\u300a\u6df1\u5165\u7406\u89e3Java\u865a\u62df\u673a\u300b\uff0c\u4e66\u4e2d\u7ed9\u4e86\u51e0\u4e2a\u4f8b\u5b50\uff0c\u6bd4\u8f83\u597d\u7684\u8bf4\u660e\u4e86\u51e0\u79cdOOM\uff08OutOfMemory\uff09\u4ea7\u751f\u7684\u8fc7\u7a0b\uff0c\u5927\u90e8\u5206\u7684\u7a0b\u5e8f\u5458\u5728\u5199\u7a0b\u5e8f\u65f6\u4e0d\u4f1a\u592a\u5173\u6ce8Java\u8fd0\u884c\u65f6\u6570\u636e\u533a\u57df\u7684\u7ed3\u6784\uff1a<\/p>\n

\"file\"<\/div><\/p>\n

\u611f\u89c9\u6709\u5fc5\u8981\u901a\u8fc7\u51e0\u4e2a\u5b9e\u5728\u7684\u4f8b\u5b50\u6765\u52a0\u6df1\u5bf9\u8fd9\u51e0\u4e2a\u533a\u57df\u7684\u4e86\u89e3\u3002<\/p>\n

Java\u7a0b\u5e8f\u8fd0\u884c\u65f6\uff0c\u6570\u636e\u4f1a\u5206\u533a\u5b58\u653e\uff0cJavaStack\uff08Java\u6808\uff09\u3001 heap\uff08\u5806\uff09\u3001method\uff08\u65b9\u6cd5\u533a\uff09\u3002
\n

\"file\"<\/div>
\n\u865a\u62df\u673a\u7684\u5185\u90e8\u7ed3\u6784<\/p>\n

1\u3001Java\u6808
\nJava\u6808\u7684\u533a\u57df\u5f88\u5c0f\uff0c\u53ea\u67091M\uff0c\u7279\u70b9\u662f\u5b58\u53d6\u901f\u5ea6\u5f88\u5feb\uff0c\u6240\u4ee5\u5728stack\u4e2d\u5b58\u653e\u7684\u90fd\u662f\u5feb\u901f\u6267\u884c\u7684\u4efb\u52a1\uff0c\u57fa\u672c\u6570\u636e\u7c7b\u578b\u7684\u6570\u636e\uff0c\u548c\u5bf9\u8c61\u7684\u5f15\u7528\uff08reference\uff09\u3002<\/p>\n

\u9a7b\u7559\u4e8e\u5e38\u89c4RAM\uff08\u968f\u673a\u8bbf\u95ee\u5b58\u50a8\u5668\uff09\u533a\u57df\u3002\u4f46\u53ef\u901a\u8fc7\u5b83\u7684\u201c\u6808\u6307\u9488\u201d\u83b7\u53d6\u5904\u7406\u7684\u76f4\u63a5\u652f\u6301\u3002\u6808\u6307\u9488\u82e5\u5411\u4e0b\u79fb\uff0c\u4f1a\u521b\u5efa\u65b0\u7684\u5185\u5b58\uff1b\u82e5\u5411\u4e0a\u79fb\uff0c\u5219\u4f1a\u91ca\u653e\u90a3\u4e9b\u5185\u5b58\u3002\u8fd9\u662f\u4e00\u79cd\u7279\u522b\u5feb\u3001\u7279\u522b\u6709\u6548\u7684\u6570\u636e\u4fdd\u5b58\u65b9\u5f0f\uff0c\u4ec5\u6b21\u4e8e\u5bc4\u5b58\u5668\u3002\u521b\u5efa\u7a0b\u5e8f\u65f6\uff0cJava\u7f16\u8bd1\u5668\u5fc5\u987b\u51c6\u786e\u5730\u77e5\u9053\u5806\u6808\u5185\u4fdd\u5b58\u7684\u6240\u6709\u6570\u636e\u7684\u201c\u957f\u5ea6\u201d\u4ee5\u53ca\u201c\u5b58\u5728\u65f6\u95f4\u201d\u3002\u8fd9\u662f\u7531\u4e8e\u5b83\u5fc5\u987b\u751f\u6210\u76f8\u5e94\u7684\u4ee3\u7801\uff0c\u4ee5\u4fbf\u5411\u4e0a\u548c\u5411\u4e0b\u79fb\u52a8\u6307\u9488\u3002\u8fd9\u4e00\u9650\u5236\u65e0\u7591\u5f71\u54cd\u4e86\u7a0b\u5e8f\u7684\u7075\u6d3b\u6027\uff0c\u6240\u4ee5\u5c3d\u7ba1\u6709\u4e9bJava\u6570\u636e\u8981\u4fdd\u5b58\u5728\u6808\u91cc\u2014\u2014\u7279\u522b\u662f\u5bf9\u8c61\u53e5\u67c4\uff0c\u4f46Java\u5bf9\u8c61\u5e76\u4e0d\u653e\u5230\u5176\u4e2d\u3002<\/p>\n

JVM\u53ea\u4f1a\u76f4\u63a5\u5bf9JavaStack\uff08Java\u6808\uff09\u6267\u884c\u4e24\u79cd\u64cd\u4f5c\uff1a\u2460\u4ee5\u5e27\u4e3a\u5355\u4f4d\u7684\u538b\u6808\u6216\u51fa\u6808\uff1b\u2461\u901a\u8fc7-Xss\u6765\u8bbe\u7f6e\uff0c \u82e5\u4e0d\u591f\u4f1a\u629b\u51faStackOverflowError\u5f02\u5e38\u3002<\/p>\n

1.\u6bcf\u4e2a\u7ebf\u7a0b\u5305\u542b\u4e00\u4e2a\u6808\u533a\uff0c\u6808\u4e2d\u53ea\u4fdd\u5b58\u57fa\u672c\u6570\u636e\u7c7b\u578b\u7684\u6570\u636e\u548c\u81ea\u5b9a\u4e49\u5bf9\u8c61\u7684\u5f15\u7528(\u4e0d\u662f\u5bf9\u8c61)\uff0c\u5bf9\u8c61\u90fd\u5b58\u653e\u5728\u5806\u533a\u4e2d
\n2.\u6bcf\u4e2a\u6808\u4e2d\u7684\u6570\u636e(\u539f\u59cb\u7c7b\u578b\u548c\u5bf9\u8c61\u5f15\u7528)\u90fd\u662f\u79c1\u6709\u7684\uff0c\u5176\u4ed6\u6808\u4e0d\u80fd\u8bbf\u95ee\u3002
\n3.\u6808\u5206\u4e3a3\u4e2a\u90e8\u5206\uff1a\u57fa\u672c\u6570\u636e\u7c7b\u578b\u7684\u53d8\u91cf\u533a\u3001\u6267\u884c\u73af\u5883\u4e0a\u4e0b\u6587\u3001\u64cd\u4f5c\u6307\u4ee4\u533a(\u5b58\u653e\u64cd\u4f5c\u6307\u4ee4)\u3002<\/p>\n

\u6808\u662f\u5b58\u653e\u7ebf\u7a0b\u8c03\u7528\u65b9\u6cd5\u65f6\u5b58\u50a8\u5c40\u90e8\u53d8\u91cf\u8868\uff0c\u64cd\u4f5c\uff0c\u65b9\u6cd5\u51fa\u53e3\u7b49\u4e0e\u65b9\u6cd5\u6267\u884c\u76f8\u5173\u7684\u4fe1\u606f\uff0cJava\u6808\u6240\u5360\u5185\u5b58\u7684\u5927\u5c0f\u7531Xss\u6765\u8c03\u8282\uff0c\u65b9\u6cd5\u8c03\u7528\u5c42\u6b21\u592a\u591a\u4f1a\u6491\u7206\u8fd9\u4e2a\u533a\u57df\u3002<\/p>\n

2\u3001\u7a0b\u5e8f\u8ba1\u6570\u5668\uff08ProgramCounter\uff09\u5bc4\u5b58\u5668
\nPC\u5bc4\u5b58\u5668\uff08 PC register \uff09\uff1a\u6bcf\u4e2a\u7ebf\u7a0b\u542f\u52a8\u7684\u65f6\u5019\uff0c\u90fd\u4f1a\u521b\u5efa\u4e00\u4e2aPC\uff08Program Counter\uff0c\u7a0b\u5e8f\u8ba1\u6570\u5668\uff09\u5bc4\u5b58\u5668\u3002PC\u5bc4\u5b58\u5668\u91cc\u4fdd\u5b58\u6709\u5f53\u524d\u6b63\u5728\u6267\u884c\u7684JVM\u6307\u4ee4\u7684\u5730\u5740\u3002 \u6bcf\u4e00\u4e2a\u7ebf\u7a0b\u90fd\u6709\u5b83\u81ea\u5df1\u7684PC\u5bc4\u5b58\u5668\uff0c\u4e5f\u662f\u8be5\u7ebf\u7a0b\u542f\u52a8\u65f6\u521b\u5efa\u7684\u3002\u4fdd\u5b58\u4e0b\u4e00\u6761\u5c06\u8981\u6267\u884c\u7684\u6307\u4ee4\u5730\u5740\u7684\u5bc4\u5b58\u5668\u662f \uff1aPC\u5bc4\u5b58\u5668\u3002PC\u5bc4\u5b58\u5668\u7684\u5185\u5bb9\u603b\u662f\u6307\u5411\u4e0b\u4e00\u6761\u5c06\u88ab\u6267\u884c\u6307\u4ee4\u7684\u5730\u5740\uff0c\u8fd9\u91cc\u7684\u5730\u5740\u53ef\u4ee5\u662f\u4e00\u4e2a\u672c\u5730\u6307\u9488\uff0c\u4e5f\u53ef\u4ee5\u662f\u5728\u65b9\u6cd5\u533a\u4e2d\u76f8\u5bf9\u5e94\u4e8e\u8be5\u65b9\u6cd5\u8d77\u59cb\u6307\u4ee4\u7684\u504f\u79fb\u91cf\u3002<\/p>\n

3\u3001\u672c\u5730\u65b9\u6cd5\u6808
\nNativemethodstack(\u672c\u5730\u65b9\u6cd5\u6808)\uff1a\u4fdd\u5b58native\u65b9\u6cd5\u8fdb\u5165\u533a\u57df\u7684\u5730\u5740\u3002<\/p>\n

4\u3001\u5806
\n\u7c7b\u7684\u5bf9\u8c61\u653e\u5728heap\uff08\u5806\uff09\u4e2d\uff0c\u6240\u6709\u7684\u7c7b\u5bf9\u8c61\u90fd\u662f\u901a\u8fc7new\u65b9\u6cd5\u521b\u5efa\uff0c\u521b\u5efa\u540e\uff0c\u5728stack\uff08\u6808\uff09\u4f1a\u521b\u5efa\u7c7b\u5bf9\u8c61\u7684\u5f15\u7528\uff08\u5185\u5b58\u5730\u5740\uff09\u3002<\/p>\n

\u4e00\u79cd\u5e38\u89c4\u7528\u9014\u7684\u5185\u5b58\u6c60\uff08\u4e5f\u5728RAM\uff08\u968f\u673a\u5b58\u53d6\u5b58\u50a8\u5668 \uff09\u533a\u57df\uff09\uff0c\u5176\u4e2d\u4fdd\u5b58\u4e86Java\u5bf9\u8c61\u3002\u548c\u6808\u4e0d\u540c\uff1a\u201c\u5185\u5b58\u5806\u201d\u6216\u201c\u5806\u201d\u6700\u5438\u5f15\u4eba\u7684\u5730\u65b9\u5728\u4e8e\u7f16\u8bd1\u5668\u4e0d\u5fc5\u77e5\u9053\u8981\u4ece\u5806\u91cc\u5206\u914d\u591a\u5c11\u5b58\u50a8\u7a7a\u95f4\uff0c\u4e5f\u4e0d\u5fc5\u77e5\u9053\u5b58\u50a8\u7684\u6570\u636e\u8981\u5728\u5806\u91cc\u505c\u7559\u591a\u957f\u7684\u65f6\u95f4\u3002\u56e0\u6b64\uff0c\u7528\u5806\u4fdd\u5b58\u6570\u636e\u65f6\u4f1a\u5f97\u5230\u66f4\u5927\u7684\u7075\u6d3b\u6027\u3002\u8981\u6c42\u521b\u5efa\u4e00\u4e2a\u5bf9\u8c61\u65f6\uff0c\u53ea\u9700\u7528new\u547d\u4ee4\u7f16\u8f91\u76f8\u5e94\u7684\u4ee3\u7801\u5373\u53ef\u3002\u6267\u884c\u8fd9\u4e9b\u4ee3\u7801\u65f6\uff0c\u4f1a\u5728\u5806\u91cc\u81ea\u52a8\u8fdb\u884c\u6570\u636e\u7684\u4fdd\u5b58\u3002\u5f53\u7136\uff0c\u4e3a\u8fbe\u5230\u8fd9\u79cd\u7075\u6d3b\u6027\uff0c\u5fc5\u7136\u4f1a\u4ed8\u51fa\u4e00\u5b9a\u7684\u4ee3\u4ef7\uff1a\u5728\u5806\u91cc\u5206\u914d\u5b58\u50a8\u7a7a\u95f4\u65f6\u4f1a\u82b1\u6389\u66f4\u957f\u7684\u65f6\u95f4\u3002<\/p>\n

JVM\u5c06\u6240\u6709\u5bf9\u8c61\u7684\u5b9e\u4f8b\uff08\u5373\u7528new\u521b\u5efa\u7684\u5bf9\u8c61\uff09\uff08\u5bf9\u5e94\u4e8e\u5bf9\u8c61\u7684\u5f15\u7528\uff08\u5f15\u7528\u5c31\u662f\u5185\u5b58\u5730\u5740\uff09\uff09\u7684\u5185\u5b58\u90fd\u5206\u914d\u5728\u5806\u4e0a\uff0c\u5806\u6240\u5360\u5185\u5b58\u7684\u5927\u5c0f\u7531-Xmx\u6307\u4ee4\u548c-Xms\u6307\u4ee4\u6765\u8c03\u8282\uff0csample\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n

public class HeapOOM {\n    static class OOMObject{}\n    \/**\n     * @param args\n     *\/\n    public static void main(String[] args) {\n        List list = new ArrayList();\/\/ List\u7c7b\u548cArrayList\u7c7b\u90fd\u662f\u96c6\u5408\u7c7b\uff0c\n                                    \/\/ \u4f46\u662fArrayList\u53ef\u4ee5\u7406\u89e3\u4e3a\u987a\u5e8f\u8868\uff0c\n                                    \/\/ \u5c5e\u4e8e\u7ebf\u6027\u8868\u3002\n        while (true) {\n            list.add(new OOMObject());\n        }\n    }\n}<\/code><\/pre>\n
\u52a0\u4e0aJVM\u53c2\u6570-verbose:gc -Xms10M -Xmx10M -XX:+PrintGCDetails -XX:SurvivorRatio=8 -XX:+HeapDumpOnOutOfMemoryError\uff0c\u5c31\u80fd\u5f88\u5feb\u62a5\u51faOOM\u5f02\u5e38\uff08\u5185\u5b58\u6ea2\u51fa\u5f02\u5e38\uff09\uff1a<\/p>\n
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space<\/p>\n
\u5e76\u4e14\u80fd\u81ea\u52a8\u751f\u6210Dump\u3002<\/p>\n
5\u3001\u65b9\u6cd5\u533a
\nmethod\uff08\u65b9\u6cd5\u533a\uff09\u53c8\u53eb\u9759\u6001\u533a\uff0c\u5b58\u653e\u6240\u6709\u7684\u2460\u7c7b\uff08class\uff09\uff0c\u2461\u9759\u6001\u53d8\u91cf\uff08static\u53d8\u91cf\uff09\uff0c\u2462\u9759\u6001\u65b9\u6cd5\uff0c\u2463\u5e38\u91cf\u548c\u2464\u6210\u5458\u65b9\u6cd5\u3002<\/p>\n
1.\u53c8\u53eb\u9759\u6001\u533a\uff0c\u8ddf\u5806\u4e00\u6837\uff0c\u88ab\u6240\u6709\u7684\u7ebf\u7a0b\u5171\u4eab\u3002<\/p>\n
2.\u65b9\u6cd5\u533a\u4e2d\u5b58\u653e\u7684\u90fd\u662f\u5728\u6574\u4e2a\u7a0b\u5e8f\u4e2d\u6c38\u8fdc\u552f\u4e00\u7684\u5143\u7d20\u3002\u8fd9\u4e5f\u662f\u65b9\u6cd5\u533a\u88ab\u6240\u6709\u7684\u7ebf\u7a0b\u5171\u4eab\u7684\u539f\u56e0\u3002<\/p>\n
\uff08\u987a\u4fbf\u5c55\u5f00\u9759\u6001\u53d8\u91cf\u548c\u5e38\u91cf\u7684\u533a\u522b\uff1a \u9759\u6001\u53d8\u91cf\u672c\u8d28\u662f\u53d8\u91cf\uff0c\u662f\u6574\u4e2a\u7c7b\u6240\u6709\u5bf9\u8c61\u5171\u4eab\u7684\u4e00\u4e2a\u53d8\u91cf\uff0c\u5176\u503c\u4e00\u65e6\u6539\u53d8\u5bf9\u8fd9\u4e2a\u7c7b\u7684\u6240\u6709\u5bf9\u8c61\u90fd\u6709\u5f71\u54cd\uff1b\u5e38\u91cf\u4e00\u65e6\u8d4b\u503c\u540e\u4e0d\u80fd\u4fee\u6539\u5176\u5f15\u7528\uff0c\u5176\u4e2d\u57fa\u672c\u6570\u636e\u7c7b\u578b\u7684\u5e38\u91cf\u4e0d\u80fd\u4fee\u6539\u5176\u503c\u3002\uff09<\/p>\n
Java\u91cc\u9762\u662f\u6ca1\u6709\u9759\u6001\u53d8\u91cf\u8fd9\u4e2a\u6982\u5ff5\u7684\uff0c\u4e0d\u4fe1\u4f60\u81ea\u5df1\u5728\u67d0\u4e2a\u6210\u5458\u65b9\u6cd5\u91cc\u9762\u5b9a\u4e49\u4e00\u4e2astatic int i = 0\uff1bJava\u91cc\u53ea\u6709\u9759\u6001\u6210\u5458\u53d8\u91cf\u3002\u5b83\u5c5e\u4e8e\u7c7b\u7684\u5c5e\u6027\u3002\u81f3\u4e8e\u4ed6\u653e\u54ea\u91cc\uff1f\u697c\u4e0a\u8bf4\u7684\u662f\u9759\u6001\u533a\u3002\u6211\u4e0d\u77e5\u9053\u5230\u5e95\u6709\u6ca1\u6709\u8fd9\u4e2a\u7ffb\u8bd1\u3002\u4f46\u662f\u6df1\u5165JVM\u91cc\u662f\u7ffb\u8bd1\u4e3a\u65b9\u6cd5\u533a\u7684\u3002\u865a\u62df\u673a\u7684\u4f53\u7cfb\u7ed3\u6784\uff1a\u2460Java\u6808\uff0c\u2461 \u5806\uff0c\u2462PC\u5bc4\u5b58\u5668\uff0c\u2463\u65b9\u6cd5\u533a\uff0c\u2464\u672c\u5730\u65b9\u6cd5\u6808\uff0c\u2465\u8fd0\u884c\u5e38\u91cf\u6c60\u3002\u800c\u65b9\u6cd5\u533a\u4fdd\u5b58\u7684\u5c31\u662f\u4e00\u4e2a\u7c7b\u7684\u6a21\u677f\uff0c\u5806\u662f\u653e\u7c7b\u7684\u5b9e\u4f8b\uff08\u5373\u5bf9\u8c61\uff09\u7684\u3002\u6808\u662f\u4e00\u822c\u6765\u7528\u6765\u51fd\u6570\u8ba1\u7b97\u7684\u3002\u968f\u4fbf\u627e\u672c\u8ba1\u7b97\u673a\u5e95\u5c42\u7684\u4e66\u90fd\u77e5\u9053\u4e86\u3002\u6808\u91cc\u7684\u6570\u636e\uff0c\u51fd\u6570\u6267\u884c\u5b8c\u5c31\u4e0d\u4f1a\u5b58\u50a8\u4e86\u3002\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u5c40\u90e8\u53d8\u91cf\u6bcf\u4e00\u6b21\u90fd\u662f\u4e00\u6837\u7684\u3002\u5c31\u7b97\u7ed9\u4ed6\u52a0\u4e00\u540e\uff0c\u4e0b\u6b21\u6267\u884c\u51fd\u6570\u7684\u65f6\u5019\u8fd8\u662f\u539f\u6765\u7684\u6837\u5b50\u3002<\/p>\n
\u65b9\u6cd5\u533a\u7684\u5927\u5c0f\u7531-XX:PermSize\u548c-XX:MaxPermSize\u6765\u8c03\u8282\uff0c\u7c7b\u592a\u591a\u6709\u53ef\u80fd\u6491\u7206\u6c38\u4e45\u4ee3\u3002\u9759\u6001\u53d8\u91cf\u6216\u5e38\u91cf\u4e5f\u6709\u53ef\u80fd\u6491\u7206\u65b9\u6cd5\u533a\u3002 <\/p>\n
6\u3001\u8fd0\u884c\u5e38\u91cf\u6c60(\u4e5f\u5c5e\u4e8e\u65b9\u6cd5\u533a\u7684)
\n\u8fd9\u513f\u7684\u201c\u9759\u6001\u201d\u662f\u6307\u201c\u4f4d\u4e8e\u56fa\u5b9a\u4f4d\u7f6e\u201d\u3002\u7a0b\u5e8f\u8fd0\u884c\u671f\u95f4\uff0c\u9759\u6001\u5b58\u50a8\u7684\u6570\u636e\u5c06\u968f\u65f6\u7b49\u5019\u8c03\u7528\u3002\u53ef\u7528static\u5173\u952e\u5b57\u6307\u51fa\u4e00\u4e2a\u5bf9\u8c61\u7684\u7279\u5b9a\u5143\u7d20\u662f\u9759\u6001\u7684\u3002\u4f46Java\u5bf9\u8c61\u672c\u8eab\u6c38\u8fdc\u90fd\u4e0d\u4f1a\u7f6e\u5165\u9759\u6001\u5b58\u50a8\u7a7a\u95f4\u3002<\/p>\n
\u8fd9\u4e2a\u533a\u57df\u5c5e\u4e8e\u65b9\u6cd5\u533a\u3002\u8be5\u533a\u57df\u5b58\u653e\u7c7b\u548c\u63a5\u53e3\u7684\u5e38\u91cf\uff0c\u9664\u6b64\u4e4b\u5916\uff0c\u5b83\u8fd8\u5b58\u653e\u6210\u5458\u53d8\u91cf\u548c\u6210\u5458\u65b9\u6cd5\u7684\u6240\u6709\u5f15\u7528\u3002\u5f53\u4e00\u4e2a\u6210\u5458\u53d8\u91cf\u6216\u8005\u6210\u5458\u65b9\u6cd5\u88ab\u5f15\u7528\u7684\u65f6\u5019\uff0cJVM\u5c31\u901a\u8fc7\u8fd0\u884c\u5e38\u91cf\u6c60\u4e2d\u7684\u8fd9\u4e9b\u5f15\u7528\u6765\u67e5\u627e\u6210\u5458\u53d8\u91cf\u548c\u6210\u5458\u65b9\u6cd5\u5728\u5185\u5b58\u4e2d\u7684\u7684\u5b9e\u9645\u5730\u5740\u3002<\/p>\n
7\u3001\u4e3e\u4f8b\u5206\u6790
\n\u4f8b\u5b50\u5982\u4e0b\uff1a<\/p>\n
\u4e3a\u4e86\u66f4\u6e05\u695a\u5730\u641e\u660e\u767d\u7a0b\u5e8f\u8fd0\u884c\u65f6\uff0c\u6570\u636e\u533a\u91cc\u7684\u60c5\u51b5\uff0c\u6211\u4eec\u6765\u51c6\u59072\u4e2a\u5c0f\u9053\u5177\uff082\u4e2a\u975e\u5e38\u7b80\u5355\u7684\u5c0f\u7a0b\u5e8f\uff09\u3002<\/p>\n
\u590d\u5236\u4ee3\u7801
\n\/\/ AppMain.java
\npublic class AppMain {                         \/\/\u8fd0\u884c\u65f6\uff0cJVM\u628aAppMain\u7684\u4fe1\u606f\u90fd\u653e\u5165\u65b9\u6cd5\u533a    <\/p>\n
public static void main(String[] args) { \/\/main\u6210\u5458\u65b9\u6cd5\u672c\u8eab\u653e\u5165\u65b9\u6cd5\u533a\u3002\n    Sample test1 = new  Sample( \" \u6d4b\u8bd51 \" );   \/\/test1\u662f\u5f15\u7528\uff0c\u6240\u4ee5\u653e\u5230\u6808\u533a\u91cc\uff0cSample\u662f\u81ea\u5b9a\u4e49\u5bf9\u8c61\u5e94\u8be5\u653e\u5230\u5806\u91cc\u9762\n    Sample test2 = new  Sample( \" \u6d4b\u8bd52 \" );\n    test1.printName();\n    test2.printName();\n}<\/code><\/pre>\n
} <\/p>\n
\/\/ Sample.java
\npublic class Sample {   \/\/\u8fd0\u884c\u65f6\uff0cJVM\u628aappmain\u7684\u4fe1\u606f\u90fd\u653e\u5165\u65b9\u6cd5\u533a\u3002            <\/p>\n
private  name;      \/\/new Sample\u5b9e\u4f8b\u540e\uff0cname\u5f15\u7528\u653e\u5165\u6808\u533a\u91cc\uff0cname\u5bf9\u8c61\u653e\u5165\u5806\u91cc\u3002\n\npublic  Sample(String name) {\n    this .name = name;\n}\n\npublic   void  printName() {\/\/ printName()\u6210\u5458\u65b9\u6cd5\u672c\u8eab\u653e\u5165\u65b9\u6cd5\u533a\u91cc\u3002\n    System.out.println(name);\n}    <\/code><\/pre>\n
}
\n\u590d\u5236\u4ee3\u7801<\/p>\n
OK\uff0c\u8ba9\u6211\u4eec\u5f00\u59cb\u884c\u52a8\u5427\uff0c\u51fa\u53d1\u6307\u4ee4\u5c31\u662f\uff1a\u201cjava AppMain\u201d\uff0c\u5305\u5305\u91cc\u5e26\u597d\u6211\u4eec\u7684\u884c\u52a8\u5411\u5bfc\u56fe\u3002<\/p>\n
\"file\"<\/div><\/p>\n
\u7cfb\u7edf\u6536\u5230\u4e86\u6211\u4eec\u53d1\u51fa\u7684\u6307\u4ee4\uff0c\u542f\u52a8\u4e86\u4e00\u4e2aJava\u865a\u62df\u673a\u8fdb\u7a0b\uff0c\u8fd9\u4e2a\u8fdb\u7a0b\u9996\u5148\u4ececlasspath\u4e2d\u627e\u5230AppMain.class\u6587\u4ef6\uff0c\u8bfb\u53d6\u8fd9\u4e2a\u6587\u4ef6\u4e2d\u7684\u4e8c\u8fdb\u5236\u6570\u636e\uff0c\u7136\u540e\u628aAppmain\u7c7b\u7684\u7c7b\u4fe1\u606f\u5b58\u653e\u5230\u8fd0\u884c\u65f6\u6570\u636e\u533a\u7684\u65b9\u6cd5\u533a\u4e2d\u3002\u8fd9\u4e00\u8fc7\u7a0b\u79f0\u4e3aAppMain\u7c7b\u7684\u52a0\u8f7d\u8fc7\u7a0b\u3002<\/p>\n
\u63a5\u7740\uff0cJVM\u5b9a\u4f4d\u5230\u65b9\u6cd5\u533a\u4e2dAppMain\u7c7b\u7684Main()\u65b9\u6cd5\u7684\u5b57\u8282\u7801\uff0c\u5f00\u59cb\u6267\u884c\u5b83\u7684\u6307\u4ee4\u3002\u8fd9\u4e2amain()\u65b9\u6cd5\u7684\u7b2c\u4e00\u6761\u8bed\u53e5\u5c31\u662f\uff1a<\/p>\n
Sample test1 = new Sample("\u6d4b\u8bd51");<\/p>\n
\u8bed\u53e5\u5f88\u7b80\u5355\u5566\uff0c\u5c31\u662f\u8ba9JVM\u521b\u5efa\u4e00\u4e2aSample\u5b9e\u4f8b\uff0c\u5e76\u4e14\u5462\uff0c\u4f7f\u5f15\u7528\u53d8\u91cftest1\u5f15\u7528\u8fd9\u4e2a\u5b9e\u4f8b\u3002\u8c8c\u4f3c\u5c0fcase\u4e00\u6869\u54e6\uff0c\u5c31\u8ba9\u6211\u4eec\u6765\u8ddf\u8e2a\u4e00\u4e0bJVM\uff0c\u770b\u770b\u5b83\u7a76\u7adf\u662f\u600e\u4e48\u6765\u6267\u884c\u8fd9\u4e2a\u4efb\u52a1\u7684\uff1a<\/p>\n
1\u3001Java\u865a\u62df\u673a\u4e00\u770b\uff0c\u4e0d\u5c31\u662f\u5efa\u7acb\u4e00\u4e2aSample\u7c7b\u7684\u5b9e\u4f8b\u5417\uff0c\u7b80\u5355\uff0c\u4e8e\u662f\u5c31\u76f4\u5954\u65b9\u6cd5\u533a\uff08\u65b9\u6cd5\u533a\u5b58\u653e\u5df2\u7ecf\u52a0\u8f7d\u7684\u7c7b\u7684\u76f8\u5173\u4fe1\u606f\uff0c\u5982\u7c7b\u3001\u9759\u6001\u53d8\u91cf\u548c\u5e38\u91cf\uff09\u800c\u53bb\uff0c\u5148\u627e\u5230Sample\u7c7b\u7684\u7c7b\u578b\u4fe1\u606f\u518d\u8bf4\u3002\u7ed3\u679c\u5462\uff0c\u563f\u563f\uff0c\u6ca1\u627e\u5230@@\uff0c\u8fd9\u4f1a\u513f\u7684\u65b9\u6cd5\u533a\u91cc\u8fd8\u6ca1\u6709Sample\u7c7b\u5462\uff08\u5373Sample\u7c7b\u7684\u7c7b\u4fe1\u606f\u8fd8\u6ca1\u6709\u8fdb\u5165\u65b9\u6cd5\u533a\u4e2d\uff09\u3002\u53efJVM\u4e5f\u4e0d\u662f\u4e00\u6839\u7b4b\u7684\u7b28\u86cb\uff0c\u4e8e\u662f\uff0c\u5b83\u53d1\u626c\u201c\u81ea\u5df1\u52a8\u624b\uff0c\u4e30\u8863\u8db3\u98df\u201d\u7684\u4f5c\u98ce\uff0c\u7acb\u9a6c\u52a0\u8f7d\u4e86Sample\u7c7b\uff0c \u628aSample\u7c7b\u7684\u76f8\u5173\u4fe1\u606f\u5b58\u653e\u5728\u4e86\u65b9\u6cd5\u533a\u4e2d\u3002<\/p>\n
2\u3001Sample\u7c7b\u7684\u76f8\u5173\u4fe1\u606f\u52a0\u8f7d\u5b8c\u6210\u540e\u3002Java\u865a\u62df\u673a\u505a\u7684\u7b2c\u4e00\u4ef6\u4e8b\u60c5\u5c31\u662f\u5728\u5806\u4e2d\u4e3a\u4e00\u4e2a\u65b0\u7684Sample\u7c7b\u7684\u5b9e\u4f8b\u5206\u914d\u5185\u5b58\uff0c\u8fd9\u4e2aSample\u7c7b\u7684\u5b9e\u4f8b\u6301\u6709\u7740\u6307\u5411\u65b9\u6cd5\u533a\u7684Sample\u7c7b\u7684\u7c7b\u578b\u4fe1\u606f\u7684\u5f15\u7528\uff08Java\u4e2d\u5f15\u7528\u5c31\u662f\u5185\u5b58\u5730\u5740\uff09\u3002\u8fd9\u91cc\u6240\u8bf4\u7684\u5f15\u7528\uff0c\u5b9e\u9645\u4e0a\u6307\u7684\u662fSample\u7c7b\u7684\u7c7b\u578b\u4fe1\u606f\u5728\u65b9\u6cd5\u533a\u4e2d\u7684\u5185\u5b58\u5730\u5740\uff0c\u5176\u5b9e\uff0c\u5c31\u662f\u6709\u70b9\u7c7b\u4f3c\u4e8eC\u8bed\u8a00\u91cc\u7684\u6307\u9488\u5566~~\uff0c\u800c\u8fd9\u4e2a\u5730\u5740\u5462\uff0c\u5c31\u5b58\u653e\u4e86\u5728Sample\u7c7b\u7684\u5b9e\u4f8b\u7684\u6570\u636e\u533a\u4e2d\u3002<\/p>\n
3\u3001\u5728JVM\u4e2d\u7684\u4e00\u4e2a\u8fdb\u7a0b\u4e2d\uff0c\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u4f1a\u62e5\u6709\u4e00\u4e2a\u65b9\u6cd5\u8c03\u7528\u6808\uff0c\u7528\u6765\u8ddf\u8e2a\u7ebf\u7a0b\u8fd0\u884c\u4e2d\u4e00\u7cfb\u5217\u7684\u65b9\u6cd5\u8c03\u7528\u8fc7\u7a0b\uff0c\u6808\u4e2d\u7684\u6bcf\u4e00\u4e2a\u5143\u7d20\u88ab\u79f0\u4e3a\u6808\u5e27\uff0c\u6bcf\u5f53\u7ebf\u7a0b\u8c03\u7528\u4e00\u4e2a\u65b9\u6cd5\u7684\u65f6\u5019\u5c31\u4f1a\u5411\u65b9\u6cd5\u6808\u4e2d\u538b\u5165\u4e00\u4e2a\u65b0\u6808\u5e27\u3002\u8fd9\u91cc\u7684\u5e27\u7528\u6765\u5b58\u50a8\u65b9\u6cd5\u7684\u53c2\u6570\u3001\u5c40\u90e8\u53d8\u91cf\u548c\u8fd0\u7b97\u8fc7\u7a0b\u4e2d\u7684\u4e34\u65f6\u6570\u636e\u3002OK\uff0c\u539f\u7406\u8bb2\u5b8c\u4e86\uff0c\u5c31\u8ba9\u6211\u4eec\u6765\u7ee7\u7eed\u6211\u4eec\u7684\u8ddf\u8e2a\u884c\u52a8\uff01\u4f4d\u4e8e\u201c=\u201d\u524d\u7684test1\u662f\u4e00\u4e2a\u5728main()\u65b9\u6cd5\u4e2d\u5b9a\u4e49\u7684\u53d8\u91cf\uff0c\u53ef\u89c1\uff0c\u5b83\u662f\u4e00\u4e2a\u5c40\u90e8\u53d8\u91cf\uff0c\u56e0\u6b64\uff0ctest1\u8fd9\u4e2a\u5c40\u90e8\u53d8\u91cf\u4f1a\u88abJVM\u6dfb\u52a0\u5230\u6267\u884cmain()\u65b9\u6cd5\u7684\u4e3b\u7ebf\u7a0b\u7684Java\u65b9\u6cd5\u8c03\u7528\u6808\u4e2d\u3002\u800c\u201c=\u201d\u5c06\u628a\u8fd9\u4e2atest1\u53d8\u91cf\u6307\u5411\u5806\u533a\u4e2d\u7684Sample\u5b9e\u4f8b\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0ctest1\u8fd9\u4e2a\u5c40\u90e8\u53d8\u91cf\u6301\u6709\u6307\u5411Sample\u7c7b\u7684\u5b9e\u4f8b\u7684\u5f15\u7528\uff08\u5373\u5185\u5b58\u5730\u5740\uff09\u3002<\/p>\n
OK\uff0c\u5230\u8fd9\u91cc\u4e3a\u6b62\u5462\uff0cJVM\u5c31\u5b8c\u6210\u4e86\u8fd9\u4e2a\u7b80\u5355\u8bed\u53e5\u7684\u6267\u884c\u4efb\u52a1\u3002\u53c2\u8003\u6211\u4eec\u7684\u884c\u52a8\u5411\u5bfc\u56fe\uff0c\u6211\u4eec\u7ec8\u4e8e\u521d\u6b65\u6478\u6e05\u4e86JVM\u7684\u4e00\u70b9\u70b9\u5e95\u7ec6\u4e86\uff0cCOOL\uff01<\/p>\n
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\u8f6c\u8f7d\uff1a https:\/\/www.cnblogs.com\/augus007\/articles\/10185796. […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[136],"tags":[48],"class_list":["post-60","post","type-post","status-publish","format-standard","hentry","category-notes-misc","tag-jvm"],"_links":{"self":[{"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=\/wp\/v2\/posts\/60","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=60"}],"version-history":[{"count":1,"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=\/wp\/v2\/posts\/60\/revisions"}],"predecessor-version":[{"id":2056,"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=\/wp\/v2\/posts\/60\/revisions\/2056"}],"wp:attachment":[{"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=60"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=60"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=60"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}