{"id":16091,"date":"2023-02-10T17:14:50","date_gmt":"2023-02-10T09:14:50","guid":{"rendered":"https:\/\/docs.pingcode.com\/?p=16091"},"modified":"2023-02-10T17:14:51","modified_gmt":"2023-02-10T09:14:51","slug":"final%e3%80%81finally%e3%80%81finalize%e6%9c%89%e5%93%aa%e4%ba%9b%e5%8c%ba%e5%88%ab","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/16091.html","title":{"rendered":"final\u3001finally\u3001finalize\u6709\u54ea\u4e9b\u533a\u522b"},"content":{"rendered":"\n<blockquote class=\"wp-block-quote\">\n<p>final\u3001finally\u3001finalize\u7684\u533a\u522b\u662f\uff1afinal\u7528\u4e8e\u58f0\u660e\u5c5e\u6027\uff0c\u65b9\u6cd5\u548c\u7c7b\uff0c\u5206\u522b\u8868\u793a\u5c5e\u6027\u4e0d\u53ef\u4ea4\u53d8\uff0c\u65b9\u6cd5\u4e0d\u53ef\u8986\u76d6\uff0c\u7c7b\u4e0d\u53ef\u7ee7\u627f\u3002finally\u662f\u5f02\u5e38\u5904\u7406\u8bed\u53e5\u7ed3\u6784\u7684\u4e00\u90e8\u5206\uff0c\u8868\u793a\u603b\u662f\u6267\u884c\u3002finalize\u662fObject\u7c7b\u7684\u4e00\u4e2a\u65b9\u6cd5\uff0c\u5728\u5783\u573e\u6536\u96c6\u5668\u6267\u884c\u7684\u65f6\u5019\u4f1a\u8c03\u7528\u88ab\u56de\u6536\u5bf9\u8c61\u7684\u6b64\u65b9\u6cd5\uff0c\u4f9b\u5783\u573e\u6536\u96c6\u65f6\u7684\u5176\u4ed6\u8d44\u6e90\u56de\u6536\uff0c\u4f8b\u5982\u5173\u95ed\u6587\u4ef6\u7b49\u3002<\/p>\n<\/blockquote>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"680\" height=\"421\" src=\"https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2023\/02\/\u6a21\u677f2-\u526f\u672c-\u526f\u672c-\u526f\u672c-\u526f\u672c-2023-02-10T171443.996-1.jpg?x-oss-process=image\/auto-orient,1\/format,webp\" alt=\"\" class=\"wp-image-16093\" srcset=\"https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2023\/02\/\u6a21\u677f2-\u526f\u672c-\u526f\u672c-\u526f\u672c-\u526f\u672c-2023-02-10T171443.996-1.jpg 680w, https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2023\/02\/\u6a21\u677f2-\u526f\u672c-\u526f\u672c-\u526f\u672c-\u526f\u672c-2023-02-10T171443.996-1-300x186.jpg 300w\" sizes=\"(max-width: 680px) 100vw, 680px\" \/><\/figure><\/div>\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u3001final\u3001finally\u3001finalize\u7684\u533a\u522b<\/h2>\n\n\n\n<p>final\u7528\u4e8e\u58f0\u660e\u5c5e\u6027\uff0c\u65b9\u6cd5\u548c\u7c7b\uff0c\u5206\u522b\u8868\u793a\u5c5e\u6027\u4e0d\u53ef\u4ea4\u53d8\uff0c\u65b9\u6cd5\u4e0d\u53ef\u8986\u76d6\uff0c\u7c7b\u4e0d\u53ef\u7ee7\u627f\u3002finally\u662f\u5f02\u5e38\u5904\u7406\u8bed\u53e5\u7ed3\u6784\u7684\u4e00\u90e8\u5206\uff0c\u8868\u793a\u603b\u662f\u6267\u884c\u3002<\/p>\n\n\n\n<p>finalize\u662fObject\u7c7b\u7684\u4e00\u4e2a\u65b9\u6cd5\uff0c\u5728\u5783\u573e\u6536\u96c6\u5668\u6267\u884c\u7684\u65f6\u5019\u4f1a\u8c03\u7528\u88ab\u56de\u6536\u5bf9\u8c61\u7684\u6b64\u65b9\u6cd5\uff0c\u4f9b\u5783\u573e\u6536\u96c6\u65f6\u7684\u5176\u4ed6\u8d44\u6e90\u56de\u6536\uff0c\u4f8b\u5982\u5173\u95ed\u6587\u4ef6\u7b49\u3002<\/p>\n\n\n\n<p>final\u53ef\u4ee5\u4fee\u9970\u7c7b\uff0c\u53d8\u91cf\uff0c\u65b9\u6cd5\uff0c\u4fee\u9970\u7684\u7c7b\u4e0d\u80fd\u88ab\u7ee7\u627f\uff0c\u4fee\u9970\u7684\u53d8\u91cf\u4e0d\u80fd\u91cd\u65b0\u8d4b\u503c\uff0c\u4fee\u9970\u7684\u65b9\u6cd5\u4e0d\u80fd\u88ab\u91cd\u5199\u3002<\/p>\n\n\n\n<p>finally\u7528\u4e8e\u629b\u5f02\u5e38\uff0cfinally\u4ee3\u7801\u5757\u5185\u8bed\u53e5\u65e0\u8bba\u662f\u5426\u53d1\u751f\u5f02\u5e38\uff0c\u90fd\u4f1a\u5728\u6267\u884cfinally\uff0c\u5e38\u7528\u4e8e\u4e00\u4e9b\u6d41\u7684\u5173\u95ed\u3002<\/p>\n\n\n\n<p>finalize\u65b9\u6cd5\u7528\u4e8e\u5783\u573e\u56de\u6536\u3002\u4e00\u822c\u60c5\u51b5\u4e0b\u4e0d\u9700\u8981\u6211\u4eec\u5b9e\u73b0finalize\uff0c\u5f53\u5bf9\u8c61\u88ab\u56de\u6536\u7684\u65f6\u5019\u9700\u8981\u91ca\u653e\u4e00\u4e9b\u8d44\u6e90\uff0c\u6bd4\u5982socket\u94fe\u63a5\uff0c\u5728\u5bf9\u8c61\u521d\u59cb\u5316\u65f6\u521b\u5efa\uff0c\u6574\u4e2a\u751f\u547d\u5468\u671f\u5185\u6709\u6548\uff0c\u90a3\u4e48\u9700\u8981\u5b9e\u73b0finalize\u65b9\u6cd5\uff0c\u5173\u95ed\u8fd9\u4e2a\u94fe\u63a5\u3002\u4f46\u662f\u5f53\u8c03\u7528finalize\u65b9\u6cd5\u540e\uff0c\u5e76\u4e0d\u610f\u5473\u7740GC\u4f1a\u7acb\u5373\u56de\u6536\u8be5\u5bf9\u8c61\uff0c\u6240\u4ee5\u6709\u53ef\u80fd\u771f\u6b63\u8c03\u7528\u7684\u65f6\u5019\uff0c\u5bf9\u8c61\u53c8\u4e0d\u9700\u8981\u56de\u6536\u4e86\uff0c\u7136\u540e\u5230\u4e86\u771f\u6b63\u8981\u56de\u6536\u7684\u65f6\u5019\uff0c\u56e0\u4e3a\u4e4b\u524d\u8c03\u7528\u8fc7\u4e00\u6b21\uff0c\u8fd9\u6b21\u53c8\u4e0d\u4f1a\u8c03\u7528\u4e86\uff0c\u4ea7\u751f\u95ee\u9898\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u4e00\u4e2a\u7c7b\u88ab\u58f0\u660e\u4e3afinal\uff0c\u5c31\u610f\u5473\u7740\u5b83\u4e0d\u80fd\u518d\u6d3e\u751f\u51fa\u65b0\u7684\u5b50\u7c7b\uff0c\u4e0d\u80fd\u4f5c\u4e3a\u7236\u7c7b\u88ab\u7ee7\u627f\u3002\u56e0\u6b64\uff0c\u4e00\u4e2a\u7c7b\u4e0d\u80fd\u540c\u65f6\u88ab\u58f0\u660e\u4e3aabstract\u62bd\u8c61\u7c7b\u7684\u548cfinal\u7684\u7c7b\u3002\u5982\u679c\u5c06\u53d8\u91cf\u6216\u8005\u65b9\u6cd5\u58f0\u660e\u4e3afinal\uff0c\u53ef\u4ee5\u4fdd\u8bc1\u5b83\u4eec\u5728\u4f7f\u7528\u4e2d\u4e0d\u88ab\u6539\u53d8\u3002\u88ab\u58f0\u660e\u4e3afinal\u7684\u53d8\u91cf\u5fc5\u987b\u5728\u58f0\u660e\u65f6\u7ed9\u5b9a\u521d\u503c\uff0c\u800c\u5728\u4ee5\u540e\u7684\u5f15\u7528\u4e2d\u53ea\u80fd\u8bfb\u53d6\uff0c\u4e0d\u53ef\u4fee\u6539\u3002\u88ab\u58f0\u660efinal\u7684\u65b9\u6cd5\u53ea\u80fd\u4f7f\u7528\uff0c\u4e0d\u80fd\u91cd\u8f7d\u3002<\/p>\n\n\n\n<p>finally\u662f\u5bf9Java\u5f02\u5e38\u5904\u7406\u6a21\u578b\u7684\u4f18\u5f02\u8865\u5145\u3002finally\u7ed3\u6784\u4f7f\u4ee3\u7801\u603b\u4f1a\u6267\u884c\uff0c\u800c\u4e0d\u7ba1\u65e0\u5f02\u5e38\u53d1\u751f\u3002\u4f7f\u7528finally\u53ef\u4ee5\u7ef4\u62a4\u5bf9\u8c61\u7684\u5185\u90e8\u72b6\u6001\uff0c\u5e76\u53ef\u4ee5\u6e05\u7406\u975e\u5185\u5b58\u8d44\u6e90\u3002\u7279\u522b\u662f\u5728\u5173\u95ed\u6570\u636e\u5e93\u8fde\u63a5\u8fd9\u65b9\u9762\uff0c\u5982\u679c\u7a0b\u5e8f\u5458\u628a\u6570\u636e\u5e93\u8fde\u63a5\u7684close()\u65b9\u6cd5\u653e\u5230finally\u4e2d\uff0c\u5c31\u4f1a\u5927\u5927\u964d\u4f4e\u7a0b\u5e8f\u51fa\u9519\u7684\u51e0\u7387\u3002<\/p>\n\n\n\n<p>finalize\uff1aJava\u4e2d\u7684\u4e00\u4e2a\u65b9\u6cd5\u540d\u3002Java\u6280\u672f\u4f7f\u7528finalize()\u65b9\u6cd5\u5728\u5783\u573e\u6536\u96c6\u5668\u5c06\u5bf9\u8c61\u4ece\u5185\u5b58\u4e2d\u6e05\u9664\u51fa\u53bb\u524d\uff0c\u505a\u5fc5\u8981\u7684\u6e05\u7406\u5de5\u4f5c\u3002\u8fd9\u4e2a\u65b9\u6cd5\u662f\u7531\u5783\u573e\u6536\u96c6\u5668\u5728\u786e\u5b9a\u8fd9\u4e2a\u5bf9\u8c61\u6ca1\u88ab\u5f15\u7528\u65f6\u5bf9\u8fd9\u4e2a\u5bf9\u8c61\u8c03\u7528\u7684\u3002\u5b83\u662f\u5728Object\u7c7b\u4e2d\u5b9a\u4e49\u7684\uff0c\u56e0\u6b64\u6240\u7684\u7c7b\u90fd\u7ee7\u627f\u4e86\u5b83\u3002\u5b50\u7c7b\u8986\u76d6finalize()\u65b9\u6cd5\u4ee5\u6574\u7406\u7cfb\u7edf\u8d44\u6e90\u6216\u8005\u6267\u884c\u5176\u4ed6\u6e05\u7406\u5de5\u4f5c\u3002finalize()\u65b9\u6cd5\u662f\u5728\u5783\u573e\u6536\u96c6\u5668\u5220\u9664\u5bf9\u8c61\u4e4b\u524d\u5bf9\u8fd9\u4e2a\u5bf9\u8c61\u8c03\u7528\u7684\u3002<br><\/p>\n\n\n\n<p><strong>\u5ef6\u4f38\u9605\u8bfb\uff1a<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u3001final\u7684\u7528\u6cd5<\/h2>\n\n\n\n<p>final\u662fjava\u5173\u952e\u5b57\u4e4b\u4e00\uff0c\u7528\u4e8e\u4fee\u9970\u7c7b\u6216\u8005\u65b9\u6cd5\uff0c\u6216\u8005\u53d8\u91cf\uff0c\u53ef\u4ee5\u548cstatic\u5171\u5b58\u3002\u88abfianl\u4fee\u9970\u7684\u8fd9\u4e9b\u7c7b\uff0c\u65b9\u6cd5\uff0c\u53d8\u91cf\u90fd\u4e0d\u80fd\u518d\u88ab\u4fee\u6539\u3002\u5bf9\u4e8e\u7c7b\uff0c\u4e0d\u80fd\u518d\u88ab\u7ee7\u627f\uff1b\u5bf9\u4e8e\u65b9\u6cd5\uff0c\u4e0d\u80fd\u88ab\u91cd\u5199\uff1b\u5bf9\u4e8e\u57fa\u672c\u7c7b\u578b\u7684\u53d8\u91cf\uff0c\u4e0d\u80fd\u4fee\u6539\u5176\u503c\uff08\u5176\u5b9e\u5c31\u662f\u5e38\u91cf\uff09<\/p>\n\n\n\n<p>\u5bf9\u4e8e\u5f15\u7528\u7c7b\u578b\uff08\u5373final\u4fee\u9970\u7684\u662f\u4e00\u4e2a\u5bf9\u8c61\u7684\u60c5\u5f62\uff09\uff0c\u5c31\u8868\u793a\u8fd9\u4e2a\u53d8\u91cf\u88ab\u8d4b\u4e88\u7684\u5f15\u7528\u662f\u4e0d\u53ef\u53d8\u7684\uff0c\u6ce8\u610f\uff0c\u4e0d\u53ef\u6539\u53d8\u7684\u53ea\u662f\u8fd9\u4e2a\u53d8\u91cf\u6240\u4fdd\u5b58\u7684\u5f15\u7528\uff0c\u5e76\u4e0d\u662f\u8fd9\u4e2a\u5f15\u7528\u6240\u6307\u5411\u7684\u5bf9\u8c61\u3002\u4e00\u4e2a\u7c7b\u4e0d\u80fd\u65e2\u88ababstract\u58f0\u660e,\u53c8\u88abfinal\u58f0\u660e\uff0c\u8fd9\u662f\u56e0\u4e3a\u88abfinal\u4fee\u9970\u7684\u7c7b\uff0c\u5c31\u610f\u5473\u7740\u4e0d\u80fd\u518d\u6d3e\u751f\u51fa\u65b0\u7684\u5b50\u7c7b\uff0c\u4e0d\u80fd\u4f5c\u4e3a\u7236\u7c7b\u800c\u88ab\u5b50\u7c7b\u7ee7\u627f\uff0c\u8fd9\u548cabstract\u6b63\u597d\u662f\u4e92\u65a5\u7684\u3002<\/p>\n\n\n\n<p>\u88abfinal\u4fee\u9970\u7684\u53d8\u91cf\u5fc5\u987b\u88ab\u521d\u59cb\u5316\u3002\u521d\u59cb\u5316\u65b9\u5f0f\uff1a<br>\u5728\u5b9a\u4e49\u7684\u65f6\u5019\u521d\u59cb\u5316\u3002<br>final\u53d8\u91cf\u53ef\u4ee5\u5728\u521d\u59cb\u5316\u5757\u4e2d\u521d\u59cb\u5316\uff0c\u4e0d\u53ef\u4ee5\u5728\u9759\u6001\u521d\u59cb\u5316\u5757\u4e2d\u521d\u59cb\u5316\u3002<br>\u9759\u6001final\u53d8\u91cf\u53ef\u4ee5\u5728\u9759\u6001\u521d\u59cb\u5316\u5757\u4e2d\u521d\u59cb\u5316\uff0c\u4e0d\u53ef\u4ee5\u5728\u521d\u59cb\u5316\u5757\u4e2d\u521d\u59cb\u5316\u3002<br>final\u53d8\u91cf\u8fd8\u53ef\u4ee5\u5728\u7c7b\u7684\u6784\u9020\u5668\u4e2d\u521d\u59cb\u5316\uff0c\u4f46\u662f\u9759\u6001final\u53d8\u91cf\u4e0d\u53ef\u4ee5\u3002<br><\/p>\n\n\n\n<p>\u4ee5\u4e0a\u5c31\u662f\u5173\u4e8efinal\u3001finally\u3001finalize\u7684\u533a\u522b\u7684\u5185\u5bb9\u4e86\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u6709\u5e2e\u52a9\u3002<br><\/p>\n","protected":false},"excerpt":{"rendered":"final\u3001finally\u3001finalize\u7684\u533a\u522b\u662f\uff1afinal\u7528\u4e8e\u58f0\u660e\u5c5e\u6027\uff0c\u65b9\u6cd5\u548c\u7c7b\uff0c\u5206\u522b\u8868\u793a\u5c5e\u6027\u4e0d\u53ef\u4ea4\u53d8\uff0c 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