{"id":122862,"date":"2026-11-05T21:49:06","date_gmt":"2026-11-05T13:49:06","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/122862.html"},"modified":"2026-11-05T21:49:06","modified_gmt":"2026-11-05T13:49:06","slug":"new%e5%85%b3%e9%94%ae%e5%ad%97%e5%88%9b%e5%bb%ba%e5%af%b9%e8%b1%a1%e7%9a%84%e6%ad%a5%e9%aa%a4%e6%b5%81%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/122862.html","title":{"rendered":"new\u5173\u952e\u5b57\u521b\u5efa\u5bf9\u8c61\u7684\u6b65\u9aa4\u6d41\u7a0b"},"content":{"rendered":"<p>        \/* MD \/ \u5bcc\u6587\u672c\u4e2d\u7684 .toc\uff08\u542b\u535a\u5ba2\u56ed\u642c\u5bb6\u7b49\u5d4c\u5957\u7ed3\u6784\uff09\uff1b.toc-box \u5728\u4fa7\u680f\uff0c\u4e0d\u53d7\u5f71\u54cd *\/<br \/>\n        #content_views .toc,<br \/>\n        \/* \u7f16\u8f91\u5668\u5e38\u5728\u76ee\u5f55\u524d\u540e\u63d2\u5165\u7a7a p\uff08:empty \u4ecd\u5360 20px\uff09\uff0c\u4e00\u5e76\u53bb\u6389\u907f\u514d\u9876\u7a7a\u9699 *\/<br \/>\n        #content_views.markdown_views &gt; p:empty:has(+ .toc),<br \/>\n        #content_views.markdown_views &gt; .toc + p:empty,<br \/>\n        \/* \u5bcc\u6587\u672c\u65e7\u7248\u76ee\u5f55\u6807\u8bb0 *\/<br \/>\n        #content_views.htmledit_views #main-toc,<br \/>\n        #content_views.htmledit_views #hr-toc,<br \/>\n        #content_views.htmledit_views p[id*=\\&#8221;-toc\\&#8221;] {<br \/>\n          display: none !important;<br \/>\n        }<br \/>\n        \/* \u76ee\u5f55\u53bb\u6389\u540e\uff0c\u7d27\u8ddf\u7684\u9996\u4e2a\u6807\u9898\u4e0d\u518d\u591a\u51fa\u4e00\u5757\u4e0a\u8fb9\u8ddd *\/<br \/>\n        #content_views.markdown_views &gt; .toc + h1,<br \/>\n        #content_views.markdown_views &gt; .toc + h2,<br \/>\n        #content_views.markdown_views &gt; .toc + h3,<br \/>\n        #content_views.markdown_views &gt; .toc + h4,<br \/>\n        #content_views.markdown_views &gt; .toc + p:empty + h1,<br \/>\n        #content_views.markdown_views &gt; .toc + p:empty + h2,<br \/>\n        #content_views.markdown_views &gt; .toc + p:empty + h3,<br \/>\n        #content_views.markdown_views &gt; .toc + p:empty + h4 {<br \/>\n          margin-top: 0 !important;<br \/>\n        }<\/p>\n<p id=\"main-toc\">\u76ee\u5f55<\/p>\n<p id=\"1%E3%80%81%E5%88%A4%E6%96%AD%E5%AF%B9%E8%B1%A1%E5%AF%B9%E5%BA%94%E7%9A%84%E7%B1%BB%E6%98%AF%E5%90%A6%E5%8A%A0%E8%BD%BD%E3%80%81%E8%BF%9E%E6%8E%A5%E3%80%81%E5%88%9D%E5%A7%8B%E5%8C%96-toc\" style=\"margin-left:80px\">1\u3001\u5224\u65ad\u5bf9\u8c61\u5bf9\u5e94\u7684\u7c7b\u662f\u5426\u52a0\u8f7d\u3001\u8fde\u63a5\u3001\u521d\u59cb\u5316<\/p>\n<p id=\"2%E3%80%81%E4%B8%BA%E5%AF%B9%E8%B1%A1%E5%86%85%E5%AD%98%E5%88%86%E9%85%8D%EF%BC%88%E6%8C%87%E9%92%88%E7%A2%B0%E6%92%9E%E3%80%81%E7%A9%BA%E9%97%B2%E9%93%BE%E8%A1%A8%EF%BC%89-toc\" style=\"margin-left:80px\">2\u3001\u4e3a\u5bf9\u8c61\u5185\u5b58\u5206\u914d&#xff08;\u6307\u9488\u78b0\u649e\u3001\u7a7a\u95f2\u94fe\u8868&#xff09;<\/p>\n<p id=\"3%E3%80%81%E5%A4%84%E7%90%86%E5%B9%B6%E5%8F%91%E5%AE%89%E5%85%A8%E9%97%AE%E9%A2%98-toc\" style=\"margin-left:80px\">3\u3001\u5904\u7406\u5e76\u53d1\u5b89\u5168\u95ee\u9898<\/p>\n<p id=\"4%E3%80%81%E5%88%9D%E5%A7%8B%E5%8C%96%E5%88%86%E9%85%8D%E5%88%B0%E7%9A%84%E5%86%85%E5%AD%98%E7%A9%BA%E9%97%B4-toc\" style=\"margin-left:80px\">4\u3001\u521d\u59cb\u5316\u5206\u914d\u5230\u7684\u5185\u5b58\u7a7a\u95f4<\/p>\n<p id=\"5%E3%80%81%E8%AE%BE%E7%BD%AE%E5%AF%B9%E8%B1%A1%E7%9A%84%E5%AF%B9%E8%B1%A1%E5%A4%B4-toc\" style=\"margin-left:80px\">5\u3001\u8bbe\u7f6e\u5bf9\u8c61\u7684\u5bf9\u8c61\u5934<\/p>\n<p id=\"6%E3%80%81%E6%89%A7%E8%A1%8Cinit%E6%96%B9%E6%B3%95%E8%BF%9B%E8%A1%8C%E5%88%9D%E5%A7%8B%E5%8C%96-toc\" style=\"margin-left:80px\">6\u3001\u6267\u884cinit\u65b9\u6cd5\u8fdb\u884c\u521d\u59cb\u5316<\/p>\n<hr id=\"hr-toc\" \/>\n<p>\u67e5\u770b\u521b\u5efa\u5bf9\u8c61\u7684\u5b57\u8282\u7801<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"174\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/11\/20261105134903-6aec894f3fe96.png\" width=\"482\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"188\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/11\/20261105134903-6aec894f9a5ae.png\" width=\"476\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"194\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/11\/20261105134904-6aec89501c50d.png\" width=\"406\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"144\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/11\/20261105134904-6aec8950ad4ed.png\" width=\"522\" \/><\/p>\n<p># 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&lt;init&gt;\u662f\u5bf9\u8c61\u521d\u59cb\u5316\u65f6\u6267\u884c\u7684\u65b9\u6cd5&#xff0c;\u800c&lt;clinit&gt;\u662f\u7c7b\u521d\u59cb\u5316\u65f6\u6267\u884c\u7684\u65b9\u6cd5\u3002<\/p>\n<h4 id=\"1%E3%80%81%E5%88%A4%E6%96%AD%E5%AF%B9%E8%B1%A1%E5%AF%B9%E5%BA%94%E7%9A%84%E7%B1%BB%E6%98%AF%E5%90%A6%E5%8A%A0%E8%BD%BD%E3%80%81%E8%BF%9E%E6%8E%A5%E3%80%81%E5%88%9D%E5%A7%8B%E5%8C%96\">1\u3001\u5224\u65ad\u5bf9\u8c61\u5bf9\u5e94\u7684\u7c7b\u662f\u5426\u52a0\u8f7d\u3001\u8fde\u63a5\u3001\u521d\u59cb\u5316<\/h4>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u865a\u62df\u673a\u9047\u5230\u4e00\u6761new\u6307\u4ee4&#xff0c;\u9996\u5148\u53bb\u68c0\u67e5\u8fd9\u4e2a\u6307\u4ee4\u7684\u53c2\u6570\u80fd\u5426\u5728Metaspace\u7684\u5e38\u91cf\u6c60\u4e2d\u5b9a\u4f4d\u5230\u4e00\u4e2a\u7c7b\u7684\u7b26\u53f7\u5f15\u7528&#xff0c;\u5e76\u4e14\u68c0\u67e5\u8fd9\u4e2a\u7b26\u53f7\u5f15\u7528\u4ee3\u8868\u7684\u7c7b\u662f\u5426\u5df2\u7ecf\u88ab\u52a0\u8f7d\u3001\u89e3\u6790\u548c\u521d\u59cb\u5316\u3002(\u5373\u5224\u65ad\u7c7b\u5143\u4fe1\u606f\u662f\u5426\u5b58\u5728)\u3002<\/p>\n<ul>\n<li>\u5982\u679c\u6ca1\u6709&#xff0c;\u90a3\u4e48\u5728\u53cc\u4eb2\u59d4\u6d3e\u6a21\u5f0f\u4e0b&#xff0c;\u4f7f\u7528\u5f53\u524d\u7c7b\u52a0\u8f7d\u5668\u4ee5classLoader&#043;\u5305\u540d&#043;\u7c7b\u540d\u4e3aKey\u8fdb\u884c\u67e5\u627e\u5bf9\u5e94\u7684.class 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\u5982\u679c\u5b9e\u4f8b\u6210\u5458\u53d8\u91cf\u662f\u5f15\u7528\u53d8\u91cf&#xff0c;\u4ec5\u5206\u914d\u5f15\u7528\u53d8\u91cf\u7a7a\u95f4\u5373\u53ef&#xff0c;\u53734\u4e2a\u5b57\u8282\u5927\u5c0f\u3002 \u8bf4\u660e:\u9009\u62e9\u54ea\u79cd\u5206\u914d\u65b9\u5f0f\u7531Java\u5806\u662f\u5426\u89c4\u6574\u51b3\u5b9a&#xff0c;\u800cJava\u5806\u662f\u5426\u89c4\u6574\u53c8\u7531\u6240\u91c7\u7528\u7684\u5783\u573e\u6536\u96c6\u5668\u662f\u5426\u5e26\u6709\u538b\u7f29\u6574\u7406\u529f\u80fd\u51b3\u5b9a\u3002<\/p>\n<h4 id=\"3%E3%80%81%E5%A4%84%E7%90%86%E5%B9%B6%E5%8F%91%E5%AE%89%E5%85%A8%E9%97%AE%E9%A2%98\">3\u3001\u5904\u7406\u5e76\u53d1\u5b89\u5168\u95ee\u9898<\/h4>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5728\u5206\u914d\u5185\u5b58\u7a7a\u95f4\u65f6&#xff0c;\u53e6\u5916\u4e00\u4e2a\u95ee\u9898\u662f\u53ca\u65f6\u4fdd\u8bc1new\u5bf9\u8c61\u65f6\u5019\u7684\u7ebf\u7a0b\u5b89\u5168\u6027:\u521b\u5efa\u5bf9\u8c61\u662f\u975e\u5e38\u9891\u7e41\u7684\u64cd\u4f5c&#xff0c;\u865a\u62df\u673a\u9700\u8981\u89e3\u51b3\u5e76\u53d1\u95ee\u9898\u3002\u865a\u62df\u673a\u91c7\u7528\u4e86\u4e24\u79cd\u65b9\u5f0f\u89e3\u51b3\u5e76\u53d1\u95ee\u9898:<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0CAS(Compare And Swap)\u5931\u8d25\u91cd\u8bd5\u3001\u533a\u57df\u52a0\u9501:\u4fdd\u8bc1\u6307\u9488\u66f4\u65b0\u64cd\u4f5c\u7684\u539f\u5b50\u6027;<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0TLAB 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