{"id":1374,"date":"2022-03-10T16:08:34","date_gmt":"2022-03-10T08:08:34","guid":{"rendered":"http:\/\/www.zyhcoding.club\/?p=1374"},"modified":"2022-03-22T17:53:00","modified_gmt":"2022-03-22T09:53:00","slug":"java-%e5%a4%9a%e7%ba%bf%e7%a8%8b","status":"publish","type":"post","link":"http:\/\/www.zyhcoding.club\/index.php\/2022\/03\/10\/java-%e5%a4%9a%e7%ba%bf%e7%a8%8b\/","title":{"rendered":"JAVA \u591a\u7ebf\u7a0b"},"content":{"rendered":"<p>Java\u7ed9\u591a\u7ebf\u7a0b\u63d0\u4f9b\u4e86\u5185\u7f6e\u7684\u652f\u6301\uff0c\u4e00\u6761\u7ebf\u7a0b\u6307\u7684\u662f\u8fdb\u7a0b\u4e2d\u4e00\u4e2a\u5355\u4e00\u987a\u5e8f\u7684\u63a7\u5236\u6d41\uff0c\u4e00\u4e2a\u8fdb\u7a0b\u4e2d\u53ef\u4ee5\u5e76\u53d1\u591a\u4e2a\u7ebf\u7a0b\uff0c\u6bcf\u6761\u7ebf\u7a0b\u5e76\u884c\u6267\u884c\u4e0d\u540c\u7684\u4efb\u52a1\u3002<br \/>\n\u7ebf\u7a0b\u662f\u4e00\u4e2a\u52a8\u6001\u6267\u884c\u7684\u8fc7\u7a0b\uff0c\u5b83\u4e5f\u6709\u4e00\u4e2a\u4ece\u4ea7\u751f\u5230\u6b7b\u4ea1\u7684\u8fc7\u7a0b\u3002<img src=\"http:\/\/www.zyhcoding.club:80\/wp-content\/uploads\/2022\/03\/Java\u591a\u7ebf\u7a0b.png\" alt=\"\" \/><br \/>\n\u65b0\u5efa\u72b6\u6001\uff1a\u5f53\u4e00\u4e2a\u7ebf\u7a0b\u5bf9\u8c61\u88ab\u521b\u5efa\u540e\uff0c\u8fd9\u4e2a\u7ebf\u7a0b\u5c31\u8fdb\u5165\u4e86\u65b0\u5efa\u72b6\u6001\u3002<br \/>\n\u5c31\u7eea\u72b6\u6001\uff1a\u5f53\u7ebf\u7a0b\u8c03\u7528\u4e86start()\u65b9\u6cd5\u540e\uff0c\u5c31\u8fdb\u5165\u4e86\u5c31\u7eea\u72b6\u6001\u3002\u5c31\u7eea\u72b6\u6001\u7684\u7ebf\u7a0b\u5904\u4e8e\u5c31\u7eea\u961f\u5217\u4e2d\uff0c\u8981\u7b49\u5f85JVM\u91cc\u7ebf\u7a0b\u8c03\u5ea6\u5668\u7684\u8c03\u5ea6\u3002<br \/>\n\u8fd0\u884c\u72b6\u6001\uff1a\u5f53\u5c31\u7eea\u72b6\u6001\u7684\u7ebf\u7a0b\u83b7\u53d6CPU\u8d44\u6e90\uff0c\u5c31\u53ef\u4ee5\u6267\u884crun()\u51fd\u6570\uff0c\u8fdb\u5165\u8fd0\u884c\u72b6\u6001\u3002\u8fdb\u5165\u8fd0\u884c\u72b6\u6001\u7684\u7ebf\u7a0b\u4e0b\u4e00\u6b65\u53ef\u4ee5\u8fdb\u5165\u5c31\u7eea\u6001\u3001\u963b\u585e\u6001\u6216\u8005\u6b7b\u4ea1\u6001\u3002<br \/>\n\u963b\u585e\u72b6\u6001\uff1a\u7ebf\u7a0b\u6267\u884c\u4e86sleep(\u7761\u7720)\uff0csuspend(\u6302\u8d77)\u7b49\u65b9\u6cd5\u540e\u4f1a\u8fdb\u5165\u963b\u585e\u72b6\u6001\u3002<\/p>\n<h5>\u7ebf\u7a0b\u521b\u5efa<\/h5>\n<p>\u521b\u5efa\u4e00\u4e2a\u7ebf\u7a0b\u6709\u4e09\u79cd\u65b9\u6cd5\uff1a<\/p>\n<blockquote>\n<p>\u901a\u8fc7\u5b9e\u73b0Runnable\u63a5\u53e3\uff08\u6700\u7b80\u5355\uff09\uff1b<br \/>\n\u901a\u8fc7\u7ee7\u627fThread\u7c7b\u672c\u8eab\uff1b<br \/>\n\u901a\u8fc7Callable\u548cFuture\u521b\u5efa\u7ebf\u7a0b\u3002<\/p>\n<\/blockquote>\n<h5>\u7ebf\u7a0b\u4f18\u5148\u7ea7<\/h5>\n<p>\u5b9e\u9645\u4e0a\uff0cJava\u7a0b\u5e8f\u4e2d\u7684\u6bcf\u4e2a\u7ebf\u7a0b\u5e76\u4e0d\u662f\u5e73\u5747\u5206\u914dCPU\u65f6\u95f4\u7684\uff0c\u4e3a\u4e86\u4f7f\u5f97\u7ebf\u7a0b\u8d44\u6e90\u5206\u914d\u66f4\u52a0\u5408\u7406\uff0cJava\u91c7\u7528\u7684\u662f\u62a2\u5360\u5f0f\u8c03\u5ea6\u65b9\u5f0f\uff0c\u4f18\u5148\u7ea7\u8d8a\u9ad8\u7684\u7ebf\u7a0b\uff0c\u4f18\u5148\u4f7f\u7528CPU\u8d44\u6e90\uff01<\/p>\n<ul>\n<li>MIN_PRIORITY = 1   \u6700\u4f4e\u4f18\u5148\u7ea7<\/li>\n<li>MAX_PRIORITY = 5   \u6700\u9ad8\u4f18\u5148\u7ea7<\/li>\n<li>NOM_PRIORITY = 10  \u5e38\u89c4\u4f18\u5148\u7ea7<\/li>\n<\/ul>\n<h5>\u7ebf\u7a0b\u7684\u793c\u8ba9\u548c\u52a0\u5165<\/h5>\n<pre><code class=\"language-JAVA\">\/\/ \u521b\u5efa\u65b0\u7ebf\u7a0b\nThread t1 = new Thread(new Runnable(){\n    @Override\n    public void run(){\n        \/\/...\n    }\n});\n\n\/\/ t1\u5f00\u59cb\u8fd0\u884c\nt1.start();\n\n\/\/ \u7ebf\u7a0b\u7761\u772010s. \u6b64\u65b9\u6cd5\u663e\u793a\u58f0\u660e\u4e86\u4f1a\u629b\u51fa\u4e00\u4e2aInterruptedException\u5f02\u5e38\nThread.sleep(10000);\n\n\/\/\u7ec8\u6b62\u7ebf\u7a0b\uff0c\u4e0d\u5efa\u8bae\u4f7f\u7528\u7684\u65b9\u6cd5\uff0c\u56e0\u4e3a\u4f1a\u5f3a\u5236\u505c\u6b62\u7ebf\u7a0b\u800c\u4e0d\u7ba1\u7ebf\u7a0b\u6240\u5360\u7528\u7684\u8d44\u6e90\nt1.stop();\n\n\/\/\u6302\u8d77\uff0c\u4e0d\u5efa\u8bae\u4f7f\u7528\uff0c\u7406\u7531\u540c\u4e0a\nt1.suspend();\n\n\/*\u7ed9\u6307\u5b9a\u7ebf\u7a0b\u6dfb\u52a0\u4e00\u4e2a\u4e2d\u65ad\u6807\u8bb0\uff0c\u4ee5\u544a\u77e5\u7ebf\u7a0b\u9700\u8981\u7acb\u5373\u505c\u6b62\u8fd0\u884c\u6216\u662f\u8fdb\u884c\u5176\u4ed6\u64cd\u4f5c\uff0c\u7531\u7ebf\u7a0b\u6765\u54cd\u5e94\u6b64\u4e2d\u65ad\u5e76\u8fdb\u884c\u76f8\u5e94\u7684\u5904\u7406\n  \u4e0d\u540c\u4e8estop()\u51fd\u6570\u90a3\u6837\u7b80\u5355\u7c97\u66b4\u53ef\u80fd\u4f1a\u5bfc\u81f4\u8d44\u6e90\u4e0d\u5b8c\u5168\u91ca\u653e\uff0c\u8fd9\u4e2a\u65b9\u6cd5\u7ebf\u7a0b\u4f1a\u81ea\u884c\u5904\u7406\u540e\u7eed\uff01\n*\/\nt1.interrupt();\n\n\/\/ \u590d\u4f4d\u4e2d\u65ad\u6807\u8bb0\uff0c\u8fd4\u56de\u503c\u662f\u5f53\u524d\u662f\u5426\u6709\u4e2d\u65ad\u6807\u8bb0\nThread.interrupted();\n\n\/*\u7ebf\u7a0b\u8ba9\u4f4d\uff01\u8ba9\u7ed9\u540c\u4f18\u5148\u7ea7\u7684\u7ebf\u7a0b\u3002\u4f46\u662f\u8be5\u65b9\u6cd5\u53ea\u662f\u672c\u8f6eCPU\u8c03\u5ea6\u8ba9\u7ed9\u5176\u5b83\u7ebf\u7a0b\uff0c\u4e0b\u4e00\u8f6e\u65f6\u7ee7\u7eed\u6267\u884c\u8be5\u7ebf\u7a0b\u800c\u4e0d\u8ba9\u4f4d\u3002\n*\/\nThread.yeild();\n\/*\u7ebf\u7a0b\u7684\u52a0\u5165\uff01\u8be5\u65b9\u6cd5\u5c06CPU\u8ba9\u7ed9t1\u540e\uff0c\u4e00\u76f4\u7b49\u5230t1\u6267\u884c\u7ed3\u675f\uff0c\u624d\u6062\u590d\u8ba9\u4f4d\uff0c\u56de\u6765\u7ee7\u7eed\u6267\u884c\u539f\u6765\u7684\u7ebf\u7a0b\u3002\u6ce8\u610fdan\u5f53\u524d\u7ebf\u7a0b\u53ea\u662f\u7b49\u5f85t1\u6267\u884c\u7ed3\u675f\uff0c\u5e76\u4e0d\u662f\u5408\u5e76\u4e24\u4e2a\u7ebf\u7a0b\u3002\n*\/\nt1.join();\n<\/code><\/pre>\n<h5>synchronized\u540c\u6b65  \u9501\u7684\u5e95\u5c42\u5b9e\u73b0<\/h5>\n<p>\u7ebf\u7a0b\u4e4b\u95f4\u7684\u5171\u4eab\u53d8\u91cf\u5b58\u50a8\u5728\u4e3b\u5185\u5b58\uff08main memory\uff09\u4e2d\uff0c\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u6709\u4e00\u4e2a\u79c1\u6709\u7684\u5de5\u4f5c\u5185\u5b58\uff08\u672c\u5730\u5185\u5b58\uff09\uff0c\u5de5\u4f5c\u5185\u5b58\u4e2d\u5b58\u50a8\u4e86\u8be5\u7ebf\u7a0b\u4ee5\u8bfb\/\u5199\u5171\u4eab\u53d8\u91cf\u7684\u526f\u672c\u3002\u5b83\u7c7b\u4f3c\u4e8e\u6211\u4eec\u5728<code>\u8ba1\u7b97\u673a\u7ec4\u6210\u539f\u7406<\/code>\u4e2d\u5b66\u4e60\u7684\u591a\u5904\u7406\u5668\u9ad8\u901f\u7f13\u5b58\u673a\u5236\uff1a<br \/>\n<img src=\"http:\/\/www.zyhcoding.club:80\/wp-content\/uploads\/2022\/03\/\u7ebf\u7a0b\u5185\u5b58.png\" alt=\"\" \/><\/p>\n<p>\u5f53\u4e24\u4e2a\u7ebf\u7a0b\u53bb\u540c\u65f6\u8bbf\u95ee\u4e00\u4e2a\u5171\u4eab\u53d8\u91cf\u65f6\uff0c\u5b83\u4eec\u5404\u81ea\u5728\u64cd\u4f5c\u5b8c\u6bd5\u4e4b\u540e\uff0c\u53ef\u80fd\u4f1a\u5f97\u5230\u4e0d\u540c\u7684\u7ed3\u679c\uff0c\u7136\u540e\u5404\u81ea\u518d\u5c06\u5171\u4eab\u53d8\u91cf\u5199\u56de\u5185\u5b58\uff0c\u8fd9\u6837\u5c31\u4f1a\u5f97\u5230\u6211\u4eec\u9884\u671f\u4e4b\u5916\u7684\u7ed3\u679c\uff0c\u53d1\u751f\u4e00\u81f4\u6027\u9519\u8bef\u3002<br \/>\n<img src=\"http:\/\/www.zyhcoding.club:80\/wp-content\/uploads\/2022\/03\/JMM\u6a21\u578b.png\" alt=\"\" \/><\/p>\n<p>Synchronized\u7684\u4f5c\u7528\u5c31\u662fJava\u4e2d\u89e3\u51b3\u5e76\u53d1\u95ee\u9898\u7684\u4e00\u79cd\u6700\u5e38\u7528\u6700\u7b80\u5355\u7684\u65b9\u6cd5 \uff0c\u4ed6\u53ef\u4ee5\u786e\u4fdd\u540c\u4e00\u4e2a\u65f6\u523b\u6700\u591a\u53ea\u6709\u4e00\u4e2a\u7ebf\u7a0b\u6267\u884c\u540c\u6b65\u4ee3\u7801\uff0c\u4ece\u800c\u4fdd\u8bc1\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\u5e76\u53d1\u5b89\u5168\u7684\u6548\u679c\u3002<br \/>\n\u88ab<code>syhchronized<\/code>\u4fee\u9970\u7684\u4ee3\u7801\u5c31\u4f1a\u4ee5\u539f\u5b50\u7684\u65b9\u5f0f\u6267\u884c\uff0c\u5373\u4f5c\u4e3a\u4e00\u4e2a\u6574\u4f53\uff0c\u4e0d\u4f1a\u6267\u884c\u5230\u4e00\u534a\u7136\u540e\u505c\u4e0b\u6765\u53bb\u6267\u884c\u5176\u4ed6\u7684\u7ebf\u7a0b\u3002\u5f53\u591a\u4e2a\u7ebf\u7a0b\u6267\u884c\u8fd9\u5757\u4ee3\u7801\u65f6\uff0c\u5b83\u4eec\u662f\u4e92\u65a5\u7684\uff0c\u4e0d\u4f1a\u76f8\u4e92\u5e72\u6270\uff0c\u4e0d\u4f1a\u540c\u65f6\u6267\u884c\u3002<br \/>\nSynchronized\u5de5\u4f5c\u673a\u5236\u662f\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e2d\u4f7f\u7528\u4e00\u628a\u9501\uff0c\u5728\u7b2c\u4e00\u4e2a\u7ebf\u7a0b\u53bb\u6267\u884c\u7684\u65f6\u5019\u53bb\u83b7\u53d6\u8fd9\u628a\u9501\u624d\u80fd\u6267\u884c\uff0c\u4e00\u65e6\u83b7\u53d6\u5c31\u72ec\u5360\u8fd9\u628a\u9501\u76f4\u5230\u6267\u884c\u5b8c\u6bd5\u6216\u8005\u5728\u4e00\u5b9a\u6761\u4ef6\u4e0b\u624d\u4f1a\u53bb\u91ca\u653e\u8fd9\u628a\u9501\uff0c\u5728\u8fd9\u628a\u9501\u91ca\u653e\u4e4b\u524d\u5176\u4ed6\u7684\u7ebf\u7a0b\u53ea\u80fd\u963b\u585e\u7b49\u5f85\u3002<\/p>\n<p>synchronized\u4fee\u9970\u7684\u5bf9\u8c61\u6709\u4ee5\u4e0b\u51e0\u79cd<\/p>\n<ul>\n<li>\u4fee\u9970\u4e00\u4e2a\u4ee3\u7801\u5757\uff0c\u88ab\u4fee\u9970\u7684\u4ee3\u7801\u5757\u79f0\u4e3a\u540c\u6b65\u8bed\u53e5\u5757\uff0c\u5176\u4f5c\u7528\u7684\u8303\u56f4\u662f\u5927\u62ec\u53f7{}\u62ec\u8d77\u6765\u7684\u4ee3\u7801\uff0c\u4f5c\u7528\u7684\u5bf9\u8c61\u662f\u8c03\u7528\u8fd9\u4e2a\u4ee3\u7801\u5757\u7684\u5bf9\u8c61\u3002<\/li>\n<li>\u4fee\u9970\u4e00\u4e2a\u65b9\u6cd5\uff0c\u88ab\u4fee\u9970\u7684\u65b9\u6cd5\u79f0\u4e3a\u540c\u6b65\u65b9\u6cd5\uff0c\u5176\u4f5c\u7528\u7684\u8303\u56f4\u662f\u6574\u4e2a\u65b9\u6cd5\uff0c\u4f5c\u7528\u7684\u5bf9\u8c61\u662f\u8c03\u7528\u8fd9\u4e2a\u65b9\u6cd5\u7684\u5bf9\u8c61\u3002<\/li>\n<li>\u4fee\u6539\u4e00\u4e2a\u9759\u6001\u7684\u65b9\u6cd5\uff0c\u5176\u4f5c\u7528\u7684\u8303\u56f4\u662f\u6574\u4e2a\u9759\u6001\u65b9\u6cd5\uff0c\u4f5c\u7528\u7684\u5bf9\u8c61\u662f\u8fd9\u4e2a\u7c7b\u7684\u6240\u6709\u5bf9\u8c61\u3002<\/li>\n<li>\u4fee\u6539\u4e00\u4e2a\u7c7b\uff0c\u5176\u4f5c\u7528\u7684\u8303\u56f4\u662fsynchronized\u540e\u9762\u62ec\u53f7\u62ec\u8d77\u6765\u7684\u90e8\u5206\uff0c\u4f5c\u7528\u4e3b\u7684\u5bf9\u8c61\u662f\u8fd9\u4e2a\u7c7b\u7684\u6240\u6709\u5bf9\u8c61\u3002<\/li>\n<\/ul>\n<p>Java\u7684\u9501\u5206\u4e3a\u7c7b\u9501\u548c\u5bf9\u8c61\u9501\u4e24\u79cd\u3002<br \/>\n\u7c7b\u9501\uff1a\u6307synchronized\u4fee\u9970\u7684\u9759\u6001\u7684\u65b9\u6cd5\u6216\u6307\u5b9a\u9501\u4e3aclass\u5bf9\u8c61\u3002<br \/>\n\u5bf9\u8c61\u9501\uff1a\u5305\u62ec\u65b9\u6cd5\u9501\u548c\u540c\u6b65\u4ee3\u7801\u9501\u3002\u65b9\u6cd5\u9501\u662fsynchronized\u4fee\u9970\u7684\u975e\u9759\u6001\u7684\u65b9\u6cd5\u3002\u540c\u6b65\u4ee3\u7801\u9501\u662f\u6307\u5b9a\u9501\u4e3a\u5b9e\u4f8b\u5bf9\u8c61\u3002<\/p>\n<p>\u5bf9\u4e8e\u7c7b\u9501\uff0c\u53ea\u8981\u662f\u8fd9\u4e2a\u7c7b\u4ea7\u751f\u7684\u5bf9\u8c61\uff0c\u5b83\u4eec\u8c03\u7528\u8fd9\u4e2a\u9759\u6001\u65b9\u6cd5\u6216\u8005\u4ee3\u7801\u5757\u5c31\u4f1a\u4ea7\u751f\u4e92\u65a5\uff0c\u5373\u662f\u540c\u6b65\u7684\uff1b\u5bf9\u4e8e\u5bf9\u8c61\u9501\uff0c\u5f53\u5176\u5b83\u7ebf\u7a0b\u60f3\u8981\u8c03\u7528\u8be5\u5bf9\u8c61\u7684\u67d0\u4e2a\u4e0a\u9501\u7684\u975e\u9759\u6001\u65b9\u6cd5\u65f6\uff0c\u5c31\u4f1a\u4ea7\u751f\u4e92\u65a5\uff0c\u662f\u540c\u6b65\u7684\uff0c\u4e0d\u540c\u7684\u5bf9\u8c61\u4e4b\u95f4\u7684\u9501\u4e92\u4e0d\u5f71\u54cd\uff0c\u662f\u5f02\u6b65\u7684\u3002<\/p>\n<p>synchronized\u662f\u4e00\u79cd\u60b2\u89c2\u9501\uff0c\u968f\u65f6\u90fd\u8ba4\u4e3a\u6709\u5176\u4ed6\u7ebf\u7a0b\u5728\u5bf9\u6570\u636e\u8fdb\u884c\u4fee\u6539<\/p>\n<p><strong>wait()\u548cnotify()<\/strong>\u65b9\u6cd5\u53ea\u80fd\u5728\u540c\u6b65\u4ee3\u7801\u5757\u91cc\u9762\u4f7f\u7528\uff0c\u8c03\u7528wait\u65b9\u6cd5\u540e\uff0c\u7ebf\u7a0b\u91ca\u653e\u5f53\u524d\u6240\u5360\u7528\u7684\u9501\uff0c\u8fdb\u5165\u8be5\u9501\u7684\u963b\u585e\u961f\u5217\uff0c\u800c\u5f53\u5176\u4f59\u5360\u7528\u8be5\u9501\u7684\u7ebf\u7a0b\u8c03\u7528notify\u65b9\u6cd5\u540e\uff0c\u624d\u4f1a\u4ece\u961f\u5217\u91cc\u968f\u673a\u6311\u9009\u4e00\u4e2a\u5524\u9192\uff0c\u7136\u540e\u7b49\u5f85\u8c03\u7528notify\u65b9\u6cd5\u7684\u7ebf\u7a0b\u6267\u884c\u7ed3\u675f\u4e4b\u540e\uff0c\u4f1a\u7d27\u63a5\u7740\u6267\u884c\u5524\u9192\u7684\u7ebf\u7a0b\uff01<br \/>\nnotifyAll()\u65b9\u6cd5\u4f1a\u628a\u963b\u585e\u961f\u5217\u91cc\u6240\u6709\u7ebf\u7a0b\u90fd\u5524\u9192\u6267\u884c\uff0c\u4f46\u6267\u884c\u987a\u5e8f\u4ecd\u7136\u968f\u673a\u3002<\/p>\n<pre><code class=\"language-java\">\npublic static void main(String[] args) throws InterruptedException {\n    Object o1 = new Object();\n    Thread t1 = new Thread(() -&gt; {\n        synchronized (o1){\n            try {\n                System.out.println(&quot;\u5f00\u59cb\u7b49\u5f85&quot;);\n                o1.wait();     \/\/\u8fdb\u5165\u7b49\u5f85\u72b6\u6001\u5e76\u91ca\u653e\u9501\n                System.out.println(&quot;\u7b49\u5f85\u7ed3\u675f\uff01&quot;);\n            } catch (InterruptedException e) {\n                e.printStackTrace();\n            }\n        }\n    });\n    Thread t2 = new Thread(() -&gt; {\n        synchronized (o1){\n            System.out.println(&quot;\u5f00\u59cb\u5524\u9192\uff01&quot;);\n            o1.notify();     \/\/\u5524\u9192\u5904\u4e8e\u7b49\u5f85\u72b6\u6001\u7684\u7ebf\u7a0b\n            for (int i = 0; i &lt; 50; i++) {\n                System.out.println(i);   \n            }\n            \/\/\u5524\u9192\u540e\u4f9d\u7136\u9700\u8981\u7b49\u5f85\u8fd9\u91cc\u7684\u9501\u91ca\u653e\u4e4b\u524d\u7b49\u5f85\u7684\u7ebf\u7a0b\u624d\u80fd\u7ee7\u7eed\n        }\n    });\n    t1.start();\n    Thread.sleep(1000);\n    t2.start();\n}\n<\/code><\/pre>\n<p>\u4e0a\u9501\u7684\u5f62\u5f0f\u6709\u4e24\u79cd\uff0c\u4e00\u4e2a\u662f\u5bf9\u65b9\u6cd5\u4e0a\u9501\uff0c\u4e00\u4e2a\u662f\u5bf9\u4ee3\u7801\u5757\u4e0a\u9501\u6784\u9020\u4e3a\u540c\u6b65\u4ee3\u7801\u5757\u3002\u5f53\u4e00\u4e2a\u65b9\u6cd5\u88ab\u5b9a\u4e49\u4e3a\u540c\u6b65\u65b9\u6cd5\u540e\uff0c\u8be5\u65b9\u6cd5\u7684flags\u6807\u5fd7\u91cc\u5c31\u591a\u4e86\u4e00\u4e2a<code>ACC_SYNCHRONIZED<\/code>\u6807\u5fd7\uff0c\u544a\u8bc9JVM\u8fd9\u662f\u4e00\u4e2a\u540c\u6b65\u65b9\u6cd5\uff0c\u8fdb\u5165\u8be5\u65b9\u6cd5\u4e4b\u524d\u9700\u8981\u83b7\u5f97\u76f8\u5e94\u7684\u9501\uff1b\u540c\u6b65\u4ee3\u7801\u5757\u5728class\u6587\u4ef6\u91cc\u7684\u5b9e\u73b0\u662f\u901a\u8fc7<code>monitorenter<\/code>\u548c<code>monitorexit<\/code>\u6765\u5b9e\u73b0\u7684\uff0c\u7528\u6765\u83b7\u5f97\u9501\u548c\u91ca\u653e\u9501\u3002<\/p>\n<h5>\u5b88\u62a4\u7ebf\u7a0b<\/h5>\n<p>\u5b88\u62a4\u7ebf\u7a0b\u4e0d\u540c\u4e8e\u5b88\u62a4\u8fdb\u7a0b\uff0c\u5b88\u62a4\u7ebf\u7a0b\u5728\u5f53\u5176\u4ed6\u6240\u6709\u975e\u5b88\u62a4\u7ebf\u7a0b\u7ed3\u675f\u4e4b\u540e\uff0c\u4f1a\u81ea\u52a8\u7ed3\u675f\u3002<br \/>\n\u5728\u7ebf\u7a0b\u5f00\u59cb\u6267\u884c\u4e4b\u524d\u5fc5\u987b\u5148\u5c06\u5176\u8bbe\u7f6e\u4e3a\u5b88\u62a4\u7ebf\u7a0b\u624d\u53ef\u4ee5\u6267\u884c\uff0c\u5426\u5219\u65e0\u6cd5\u5728\u7ebf\u7a0b\u6267\u884c\u8fc7\u7a0b\u4e2d\u5c06\u5176\u8f6c\u6362\u4e3a\u5b88\u62a4\u8fdb\u7a0b\u3002\u5b88\u62a4\u7ebf\u7a0b\u4e2d\u521b\u5efa\u7684\u65b0\u7ebf\u7a0b\u4e5f\u662f\u5b88\u62a4\u7ebf\u7a0b\u3002<\/p>\n<pre><code class=\"language-java\">public static void main(String[] args) throws InterruptedException{\n    Thread t = new Thread(() -&gt; {\n        while (true){\n            try {\n                System.out.println(&quot;\u7a0b\u5e8f\u6b63\u5e38\u8fd0\u884c\u4e2d...&quot;);\n                Thread.sleep(1000);\n            } catch (InterruptedException e) {\n                e.printStackTrace();\n            }\n        }\n    });\n    t.setDaemon(true);   \/\/\u8bbe\u7f6e\u4e3a\u5b88\u62a4\u7ebf\u7a0b\uff08\u5fc5\u987b\u5728\u5f00\u59cb\u4e4b\u524d\uff0c\u4e2d\u9014\u662f\u4e0d\u5141\u8bb8\u8f6c\u6362\u7684\uff09\n    t.start();\n    for (int i = 0; i &lt; 5; i++) {\n        Thread.sleep(1000);\n    }\n}\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Java\u7ed9\u591a\u7ebf\u7a0b\u63d0\u4f9b\u4e86\u5185\u7f6e\u7684\u652f\u6301\uff0c\u4e00\u6761\u7ebf\u7a0b\u6307\u7684\u662f\u8fdb\u7a0b\u4e2d\u4e00\u4e2a\u5355\u4e00\u987a\u5e8f\u7684\u63a7\u5236\u6d41\uff0c\u4e00\u4e2a\u8fdb\u7a0b\u4e2d\u53ef\u4ee5\u5e76\u53d1\u591a\u4e2a\u7ebf [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[75],"tags":[],"_links":{"self":[{"href":"http:\/\/www.zyhcoding.club\/index.php\/wp-json\/wp\/v2\/posts\/1374"}],"collection":[{"href":"http:\/\/www.zyhcoding.club\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.zyhcoding.club\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.zyhcoding.club\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.zyhcoding.club\/index.php\/wp-json\/wp\/v2\/comments?post=1374"}],"version-history":[{"count":16,"href":"http:\/\/www.zyhcoding.club\/index.php\/wp-json\/wp\/v2\/posts\/1374\/revisions"}],"predecessor-version":[{"id":1423,"href":"http:\/\/www.zyhcoding.club\/index.php\/wp-json\/wp\/v2\/posts\/1374\/revisions\/1423"}],"wp:attachment":[{"href":"http:\/\/www.zyhcoding.club\/index.php\/wp-json\/wp\/v2\/media?parent=1374"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.zyhcoding.club\/index.php\/wp-json\/wp\/v2\/categories?post=1374"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.zyhcoding.club\/index.php\/wp-json\/wp\/v2\/tags?post=1374"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}