{"id":10008286,"date":"2023-09-19T19:04:56","date_gmt":"2023-09-19T11:04:56","guid":{"rendered":"https:\/\/blog.itmax.cn\/?p=10008286"},"modified":"2023-09-19T19:04:56","modified_gmt":"2023-09-19T11:04:56","slug":"%e6%9c%8b%e5%8f%8b%e4%bb%ac%ef%bc%8c%e5%b0%b1%e5%9c%a8%e4%bb%8a%e5%a4%a9%ef%bc%8cjdk-21%ef%bc%8c%e5%ae%83%e7%bb%88%e4%ba%8e%e5%b8%a6%e7%9d%80%e9%87%8d%e7%a3%85%e6%96%b0%e7%89%b9%e6%80%a7%e6%ad%a3","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10008286","title":{"rendered":"\u670b\u53cb\u4eec\uff0c\u5c31\u5728\u4eca\u5929\uff0cJDK 21\uff0c\u5b83\u7ec8\u4e8e\u5e26\u7740\u91cd\u78c5\u65b0\u7279\u6027\u6b63\u5f0f\u53d1\u5e03\u4e86\uff01"},"content":{"rendered":"<p>\u4f60\u597d\u5440\uff0c\u6211\u662f\u6b6a\u6b6a\u3002<\/p>\n<p>\u670b\u53cb\u4eec\uff0c\u597d\u6d88\u606f\uff0c\u597d\u6d88\u606f\uff0c\u91cd\u78c5\u597d\u6d88\u606f\u3002<\/p>\n<p>\u4ece\u4eca\u5e74\u5e74\u521d\u5c31\u4e00\u76f4\u5728\u558a\u7684\u5177\u6709\u9769\u547d\u6027\u3001\u672a\u6765\u6027\u3001\u5f00\u521b\u65b0\u7eaa\u5143\u7684 JDK 21 \u6309\u7167\u5b98\u65b9\u7684\u65f6\u95f4\u8ba1\u5212\u8868\uff0c\u4eca\u5929\u7ec8\u4e8e\u662f\u8981\u6b63\u5f0f GA \u4e86\uff1a<\/p>\n<blockquote><p><a target=\"_blank\" href=\"https:\/\/link.segmentfault.com\/?enc=H5EHAODN8Je7gDcBhrFppQ%3D%3D.%2BOls2pmTUzjJArDjXeY5q%2Bu5zdxgxgATKNPvfkOGLMICXbujY90rGbVTK9eSNND1\" rel=\"noopener noreferrer\">https:\/\/openjdk.org\/projects\/jdk\/21\/<\/a><\/p><\/blockquote>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044231425\" alt=\"\" title=\"\"><\/p>\n<p>GA\uff0c\u5c31\u662f\u6211\u4e0a\u9762\u6846\u8d77\u6765\u7684\u201cGeneral Availability\u201d\u7684\u7f29\u5199\uff0c\u76f4\u8bd1\u6210\u4e2d\u6587\uff0c\u867d\u7136\u662f\u201c\u666e\u901a\u53ef\u7528\u201d\u7684\u610f\u601d\uff0c\u4f46\u662f\u5728\u8f6f\u4ef6\u884c\u4e1a\uff0c\u5b83\u5c31\u4ee3\u8868\u6b63\u5f0f\u7248\u3002<\/p>\n<p>\u5982\u679c\u5bf9\u5916\u53d1\u5e03\u4e00\u4e2a GA \u7248\u672c\uff0c\u5c31\u610f\u5473\u7740\u8fd9\u4e2a\u7248\u672c\u5df2\u7ecf\u7ecf\u8fc7\u5168\u9762\u7684\u6d4b\u8bd5\uff0c\u4e0d\u5b58\u5728\u4efb\u4f55\u91cd\u5927\u7684 bug\uff0c\u53ef\u4f9b\u666e\u901a\u7528\u6237\u8fdb\u884c\u4f7f\u7528\u3002<\/p>\n<p>\u65e2\u7136\u8bf4\u5230 GA \u4e86\uff0c\u6b6a\u5e08\u5085\u4e5f\u987a\u4fbf\u7ed9\u5927\u5bb6\u666e\u53ca\u4e00\u4e0b\u4e00\u822c\u6211\u4eec\u770b\u5230\u7684\u7248\u672c\u53f7\u7684\u542b\u4e49\u3002<\/p>\n<p>\u6bd4\u5982\u6211\u4eec\u7ecf\u5e38\u4f1a\u770b\u5230\u4e00\u4e9b\u8f6f\u4ef6\u53d1\u5e03\u7684\u65f6\u5019\u90fd\u4f1a\u5e26\u4e0a Alpha\u3001Beta\u3001Gamma\u3001RC \u7b49\u7b49\u8fd9\u4e9b\u83ab\u540d\u5176\u5999\u7684\u5355\u8bcd\uff0c\u5b83\u4eec\u4ee3\u8868\u4ec0\u4e48\u610f\u601d\u5462\uff1f<\/p>\n<ul>\n<li>Alpha\uff1a\u8f6f\u4ef6\u6216\u7cfb\u7edf\u7684\u5185\u90e8\u6d4b\u8bd5\u7248\u672c\uff0c\u4ec5\u5185\u90e8\u4eba\u5458\u4f7f\u7528\u3002\u4e00\u822c\u4e0d\u5411\u5916\u90e8\u53d1\u5e03\uff0c\u901a\u5e38\u4f1a\u6709\u5f88\u591a Bug\uff0c\u9664\u975e\u4f60\u4e5f\u662f\u6d4b\u8bd5\u4eba\u5458\uff0c\u5426\u5219\u4e0d\u5efa\u8bae\u4f7f\u7528\uff0calpha \u5c31\u662f \u03b1\uff0c\u662f\u5e0c\u814a\u5b57\u6bcd\u7684\u7b2c\u4e00\u4f4d\uff0c\u8868\u793a\u6700\u521d\u7ea7\u7684\u7248\u672c\uff0cbeta \u5c31\u662f \u03b2\uff0calpha \u7248\u5c31\u662f\u6bd4 beta \u8fd8\u65e9\u7684\u6d4b\u8bd5\u7248\uff0c\u4e00\u822c\u90fd\u662f\u5185\u90e8\u6d4b\u8bd5\u7684\u7248\u672c\u3002<\/li>\n<li>Beta\uff1a\u516c\u5f00\u6d4b\u8bd5\u7248\u3002\u03b2 \u662f\u5e0c\u814a\u5b57\u6bcd\u7684\u7b2c\u4e8c\u4e2a\uff0c\u987e\u540d\u601d\u4e49\uff0c\u8fd9\u4e00\u7248\u672c\u901a\u5e38\u662f\u5728 Alpha \u7248\u672c\u540e\uff0c\u8be5\u7248\u672c\u76f8\u5bf9\u4e8e Alpha \u7248\u5df2\u6709\u4e86\u5f88\u5927\u7684\u6539\u8fdb\uff0c\u6d88\u9664\u4e86\u4e25\u91cd\u7684\u9519\u8bef\uff0c\u4f46\u8fd8\u662f\u5b58\u5728\u7740\u4e00\u7f3a\u9677\uff0c\u9700\u8981\u7ecf\u8fc7\u591a\u6b21\u6d4b\u8bd5\u6765\u8fdb\u4e00\u6b65\u6d88\u9664\u3002\u8fd9\u4e2a\u9636\u6bb5\u7684\u7248\u672c\u4f1a\u4e00\u76f4\u52a0\u5165\u65b0\u7684\u529f\u80fd\u3002<\/li>\n<li>Gamma\uff1a<br \/>\u8f6f\u4ef6\u6216\u7cfb\u7edf\u63a5\u8fd1\u4e8e\u6210\u719f\u7684\u7248\u672c\uff0c\u53ea\u9700\u8981\u505a\u4e00\u4e9b\u5c0f\u7684\u6539\u8fdb\u5c31\u80fd\u53d1\u884c\u3002\u662f beta \u7248\u505a\u8fc7\u4e00\u4e9b\u4fee\u6539\uff0c\u6210\u4e3a\u6b63\u5f0f\u53d1\u5e03\u7684\u5019\u9009\u7248\u672c\u3002<\/li>\n<li>RC\uff1aRelease Candidate\uff0c\u53d1\u884c\u5019\u9009\u7248\u672c\u3002\u548c Beta \u7248\u6700\u5927\u7684\u5dee\u522b\u5728\u4e8e Beta \u9636\u6bb5\u4f1a\u4e00\u76f4\u52a0\u5165\u65b0\u7684\u529f\u80fd\uff0c\u4f46\u662f\u5230\u4e86 RC \u7248\u672c\uff0c\u51e0\u4e4e\u5c31\u4e0d\u4f1a\u52a0\u5165\u65b0\u7684\u529f\u80fd\u4e86\uff0c\u800c\u4e3b\u8981\u7740\u91cd\u4e8e\u9664\u9519\u3002RC \u7248\u672c\u662f\u6700\u7ec8\u53d1\u653e\u7ed9\u7528\u6237\u7684\u6700\u63a5\u8fd1\u6b63\u5f0f\u7248\u7684\u7248\u672c\uff0c\u53d1\u884c\u540e\u6539\u6b63 bug \u5c31\u662f\u6b63\u5f0f\u7248\u4e86\uff0c\u5c31\u662f\u6b63\u5f0f\u7248\u4e4b\u524d\u7684\u6700\u540e\u4e00\u4e2a\u6d4b\u8bd5\u7248\u3002<\/li>\n<li>GA\uff1aGeneral Available\uff0c\u6b63\u5f0f\u53d1\u5e03\u7684\u7248\u672c\uff0c\u8fd9\u4e2a\u7248\u672c\u5c31\u662f\u6b63\u5f0f\u7684\u7248\u672c\u3002\u5728\u56fd\u5916\u90fd\u662f\u7528 GA \u6765\u8bf4\u660e release \u7248\u672c\u7684\u3002\u6bd4\u5982\uff1aMySQL Community Server 5.7.21 GA \u8fd9\u662f  MySQL Community Server 5.7 \u7b2c 21 \u4e2a\u53d1\u884c\u7a33\u5b9a\u7684\u7248\u672c\uff0cGA \u610f\u5473\u7740 General Available\uff0c\u4e5f\u5c31\u662f\u5b98\u65b9\u5f00\u59cb\u63a8\u8350\u5e7f\u6cdb\u4f7f\u7528\u4e86\u3002<\/li>\n<li>Release\uff1a\u8fd9\u4e2a\u7248\u672c\u901a\u5e38\u5c31\u662f\u6240\u8c13\u7684\u201c\u6700\u7ec8\u7248\u672c\u201d\uff0c\u5728\u524d\u9762\u7248\u672c\u7684\u4e00\u7cfb\u5217\u6d4b\u8bd5\u7248\u4e4b\u540e\uff0c\u7ec8\u5f52\u4f1a\u6709\u4e00\u4e2a\u6b63\u5f0f\u7248\u672c\uff0c\u662f\u6700\u7ec8\u4ea4\u4ed8\u7528\u6237\u4f7f\u7528\u7684\u4e00\u4e2a\u7248\u672c\uff0c\u8be5\u7248\u672c\u6709\u65f6\u4e5f\u79f0\u4e3a\u6807\u51c6\u7248\u3002\u4e00\u822c\u60c5\u51b5\u4e0b\uff0cRelease \u4e0d\u4f1a\u4ee5\u5355\u8bcd\u5f62\u5f0f\u51fa\u73b0\u5728\u8f6f\u4ef6\u5c01\u9762\u4e0a\uff0c\u53d6\u800c\u4ee3\u4e4b\u7684\u662f\u7b26\u53f7(R)\u3002<\/li>\n<li>Stable\uff1a\u7a33\u5b9a\u7248\u3002\u5728\u5f00\u6e90\u8f6f\u4ef6\u4e2d\uff0c\u90fd\u6709 stable \u7248\uff0c\u8fd9\u4e2a\u5c31\u662f\u5f00\u6e90\u8f6f\u4ef6\u7684\u6700\u7ec8\u53d1\u884c\u7248\uff0c\u7528\u6237\u53ef\u4ee5\u653e\u5fc3\u5927\u80c6\u7684\u7528\u4e86\u3002\u8fd9\u4e00\u7248\u672c\u57fa\u4e8e Beta \u7248\uff0c\u5df2\u77e5 Bug \u90fd\u88ab\u4fee\u590d\uff0c\u4e00\u822c\u60c5\u51b5\u4e0b\uff0c\u66f4\u65b0\u6bd4\u8f83\u6162\u3002<\/li>\n<\/ul>\n<p>\u9664\u4e86\u4e0a\u9762\u7684\u8fd9\u4e9b\u4e4b\u5916\uff0c\u6211\u4eec\u8fd8\u7ecf\u5e38\u770b\u89c1\u4e00\u4e2a LTS \u7684\u7248\u672c\u53f7\u3002<\/p>\n<p>LTS\uff0cLong Term Support\uff0c\u957f\u671f\u652f\u6301\u7248\uff0c\u662f\u6307\u9488\u5bf9\u8f6f\u4ef6\u7684\u67d0\u4e00\u7248\u672c\uff0c\u63d0\u4f9b\u957f\u65f6\u95f4\u7684\u6280\u672f\u652f\u6301\u3001\u5b89\u5168\u66f4\u65b0\u548c\u9519\u8bef\u4fee\u590d\u3002<\/p>\n<p>\u76f8\u5bf9\u4e8e\u975e LTS \u7248\u672c\uff0cLTS \u7248\u672c\u88ab\u8ba4\u4e3a\u662f\u66f4\u4e3a\u7a33\u5b9a\u3001\u53ef\u9760\u548c\u5b89\u5168\u7684\u7248\u672c\u3002\u56e0\u6b64\uff0c\u5728\u9700\u8981\u7a33\u5b9a\u6027\u548c\u5b89\u5168\u6027\u8f83\u9ad8\u7684\u573a\u666f\u4e2d\uff0c\u5982\u751f\u4ea7\u73af\u5883\u3001\u4f01\u4e1a\u7ea7\u5e94\u7528\u7b49\uff0cLTS \u7248\u672c\u5f97\u5230\u5e7f\u6cdb\u7684\u5e94\u7528\u3002<\/p>\n<p>\u5728 Java \u9886\u57df\uff0cLTS \u7248\u672c\u662f\u6307 Oracle \u516c\u53f8\u53d1\u5e03\u7684 Java SE\uff08Standard Edition\uff0c\u6807\u51c6\u7248\uff09\u4e2d\uff0c\u6bcf\u9694\u4e00\u6bb5\u65f6\u95f4\u53d1\u5e03\u4e00\u4e2a\u957f\u671f\u652f\u6301\u7248\u672c\u3002<\/p>\n<p>\u81ea 2018 \u5e74\u5f00\u59cb\uff0cOracle Java SE 8 \u3001Java SE 11\u3001Java SE 17 \u6210\u4e3a\u4e86 LTS \u7248\u672c\uff0c\u5206\u522b\u63d0\u4f9b\u4e86 3 \u5e74\u3001 8 \u5e74\u3001\u81f3\u5c11 3 \u5e74\u7684\u652f\u6301\u3002<\/p>\n<p>\u4f60\u770b\uff0c\u4e00\u4e2a\u5c0f\u5c0f\u7684 GA \u91cc\u9762\uff0c\u9690\u85cf\u4e86\u8fd9\u4e48\u591a\u7684\u5c0f\u77e5\u8bc6\u70b9\uff0c\u8ba9\u6b6a\u5e08\u5085\u4e00\u4e0d\u5c0f\u5fc3\u5c31\u94fa\uff08\u6c34\uff09\u57ab\uff08\u4e86\uff09\u8fd9\u4e48\u957f\u3002<\/p>\n<p>\u8bf4\u4f1a\u5230 JDK 21 \u4eca\u5929\u7684 GA \u7248\u672c\uff0c\u4e00\u5171\u53d1\u5e03\u4e86 15 \u4e2a\u65b0\u7279\u6027\uff1a<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044231426\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u4e00\u773c\u671b\u53bb\uff0c\u5176\u4e2d\u6700\u624e\u773c\u7684\uff0c\u4e5f\u662f\u63cf\u8ff0\u6700\u77ed\u7684\u4e00\u4e2a Feature \u662f 444 \u53f7 Virtual Threads\uff1a<\/p>\n<blockquote><p><a target=\"_blank\" href=\"https:\/\/link.segmentfault.com\/?enc=8G0wVwxB7T1epcHplpDsfQ%3D%3D.BBckOKczc6cO8jteR3rLT2o9ONJR2LzReXsnq6SEJBI%3D\" rel=\"noopener noreferrer\">https:\/\/openjdk.org\/jeps\/444<\/a><\/p><\/blockquote>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044231427\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u53ef\u4ee5\u8bf4\u8fd9\u4e2a\u7279\u6027\u5c31\u662f JDK 21 \u8fd9\u4e2a\u7248\u672c\u4e2d\u6700\u53d7\u77a9\u76ee\u3001\u6700\u503c\u5f97\u671f\u5f85\u7684\u4e00\u4e2a\u7279\u6027\u4e86\u3002<\/p>\n<p>Virtual Threads\uff0c\u5c31\u662f\u865a\u62df\u7ebf\u7a0b\uff0c\u4ece JDK 19 \u5406\u559d\u5230 JDK 20\uff0c\u7ec8\u4e8e\u5728 JDK 21 \u73b0\u771f\u8eab\u4e86\u3002<\/p>\n<p>\u524d\u9762\u6211\u5f62\u5bb9 JDK 21 \u7684\u65f6\u5019\u63d0\u5230\u4e86\u4e00\u4e2a\u8bcd\uff1a\u5f00\u521b\u65b0\u7eaa\u5143\u3002<\/p>\n<p>\u503c\u5f97\u5c31\u662f\u5b83\uff0c\u6839\u636e\u5b98\u65b9\u4ecb\u7ecd\uff0c\u865a\u62df\u7ebf\u7a0b\u7684\u51fa\u73b0\uff0c\u786e\u5b9e\u662f\u5f00\u542f\u4e86\u5e76\u53d1\u7f16\u7a0b\u7684\u65b0\u7eaa\u5143\uff0c\u8f7b\u91cf\u4e14\u9ad8\u6548\uff0c\u7528\u66f4\u5c11\u7684\u5f00\u9500\uff0c\u5904\u7406\u66f4\u591a\u7684\u4efb\u52a1\u3002<\/p>\n<p>\u6700\u91cd\u8981\u7684\u662f\u770b\u770b\u8fd9\u4e2a\uff1a<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044231428\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u6765\uff0c\u7ffb\u8bd1\u7ffb\u8bd1\uff0c\u4ec0\u4e48\u53eb\u505a\u201cminimal change\u201d\uff1f<\/p>\n<p>minimal\uff0c\u5c31\u662f\u5c0f\u5c0f\u7684\u4e5f\u5f88\u53ef\u7231\uff0c\u5c31\u662f\u201c\u6781\u5c0f\u7684\u201d\u3002<\/p>\n<p>change\uff0c\u5c31\u662f\u53d8\u5316\u3002<\/p>\n<p>\u5b98\u65b9\u8868\u793a\uff0c\u4f7f\u7528 java.lang.Thread API \u7684\u73b0\u6709\u4ee3\u7801\uff0c\u53ea\u9700\u505a \u6781\u5c11\u6539\u52a8\uff08minimal change\uff09\u5373\u53ef\u542f\u7528\u865a\u62df\u7ebf\u7a0b\u3002<\/p>\n<p>\u5c11\u5230\u4f60\u5347\u7ea7\u5230 JDK 21 \u4e4b\u540e\uff0c\u53ea\u9700\u8981\u628a\u521b\u5efa\u7ebf\u7a0b\u6c60\u7684\u5730\u65b9\u4fee\u6539\u4e3a\u8fd9\u6837\u5c31\u80fd\u542f\u7528\u865a\u62df\u7ebf\u7a0b\uff1a<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044231429\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u81f3\u4e8e\u8fd9\u4e2a\u73a9\u610f\u5230\u5e95\u6709\u591a\u725b\u903c\uff0c\u4f60\u53ef\u4ee5\u968f\u4fbf\u5728\u7f51\u4e0a\u68c0\u7d22\u4e00\u4e0b\uff0c\u5df2\u7ecf\u6709\u5f88\u591a\u76f8\u5173\u7684\u6587\u7ae0\u4e86\u3002<\/p>\n<p>\u4f46\u662f\u6211\u8fd8\u662f\u5efa\u8bae\u4f60\u76f4\u63a5\u770b\u5b98\u65b9\u7684\u8fd9\u4e2a\u63cf\u8ff0\uff0c\u8fd9\u624d\u662f\u7b2c\u4e00\u624b\u8d44\u6599\u51fa\u73b0\u7684\u5730\u65b9\uff0c\u5982\u679c\u8ba9\u6211\u6765\u63cf\u8ff0\uff0c\u6211\u4e5f\u53ea\u80fd\u662f\u5bf9\u4e8e\u5b98\u65b9\u6587\u7ae0\u8fdb\u884c\u62d9\u52a3\u7684\u7ffb\u8bd1\u3002<\/p>\n<blockquote><p><a target=\"_blank\" href=\"https:\/\/link.segmentfault.com\/?enc=mgLXqavuabNB577N1DMo9A%3D%3D.UFGYxuL2EN13jRSUVvNNhkda7TSQT4SYQ4JrUabBtlM%3D\" rel=\"noopener noreferrer\">https:\/\/openjdk.org\/jeps\/444<\/a><\/p><\/blockquote>\n<p>\u9664\u4e86 444 \u4e4b\u5916\uff0c\u4e5f\u6709\u5176\u4ed6\u7684\u5f88\u591a\u5b9e\u7528\u7684\u7279\u6027\u3002<\/p>\n<p>\u6839\u636e\u5b98\u65b9\u7684\u4fe1\u606f\uff0c\u5b83\u4eec\u628a\u8fd9 15 \u4e2a\u65b0\u7279\u6027\u6309\u7167 JEP \u7684\u5f62\u5f0f\u5206\u4e3a\u56db\u7c7b\uff1a\u6838\u5fc3 Java \u5e93\uff0cJava \u8bed\u8a00\u89c4\u8303\uff0cHotSpot \u548c\u5b89\u5168\u5e93\u3002<\/p>\n<blockquote><p><a target=\"_blank\" href=\"https:\/\/link.segmentfault.com\/?enc=PvcPs6k5zmSLhNVAIOD99g%3D%3D.yBOFjVRwrifhROJiiazkVVEprDWTUSORg3Eq2zCGZe4OjyDfhpCLS5uGBv%2FqnHJMBoGho0hy3A8PMMFo%2FLKGCQ%3D%3D\" rel=\"noopener noreferrer\">https:\/\/www.infoq.com\/news\/2023\/09\/java-21-so-far\/<\/a><\/p><\/blockquote>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044231430\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u7eb3\u5165\u6838\u5fc3 Java \u5e93\u7684 6 \u4e2a\u65b0\u7279\u6027\u5206\u522b\u662f\uff1a<\/p>\n<ul>\n<li>JEP 431\uff1a\u5e8f\u5217\u96c6\u5408<\/li>\n<li>JEP 442\uff1a\u5916\u90e8\u51fd\u6570\u548c\u5185\u5b58 API(\u7b2c\u4e09\u6b21\u9884\u89c8)<\/li>\n<li>JEP 444\uff1a\u865a\u62df\u7ebf\u7a0b<\/li>\n<li>JEP 446\uff1a\u4f5c\u7528\u57df\u503c(\u9884\u89c8)<\/li>\n<li>JEP 448\uff1aVector API (\u7b2c\u516d\u6b21\u5b75\u5316\u5668)<\/li>\n<li>JEP 453\uff1a\u7ed3\u6784\u5316\u5e76\u53d1(\u9884\u89c8)<\/li>\n<\/ul>\n<p>\u7eb3\u5165 Java \u8bed\u8a00\u89c4\u8303\u7684 5 \u4e2a\u65b0\u7279\u6027\u5206\u522b\u662f\uff1a<\/p>\n<ul>\n<li>JEP 430\uff1a\u5b57\u7b26\u4e32\u6a21\u677f(\u9884\u89c8)<\/li>\n<li>JEP 440\uff1a\u8bb0\u5f55\u6a21\u5f0f<\/li>\n<li>JEP 441\uff1aswitch \u6a21\u5f0f\u5339\u914d<\/li>\n<li>JEP 443\uff1a\u672a\u547d\u540d\u6a21\u5f0f\u548c\u53d8\u91cf(\u9884\u89c8)<\/li>\n<li>JEP 445\uff1a\u672a\u547d\u540d\u7c7b\u548c\u5b9e\u4f8b\u4e3b\u65b9\u6cd5(\u9884\u89c8)<\/li>\n<\/ul>\n<p>\u7eb3\u5165 HotSpot \u7684 3 \u4e2a\u65b0\u7279\u6027\u5206\u522b\u662f\uff1a<\/p>\n<ul>\n<li>JEP 439\uff1a\u5206\u4ee3 ZGC<\/li>\n<li>JEP 449\uff1a\u5f03\u7528 Windows 32 \u4f4d x86 \u79fb\u690d<\/li>\n<li>JEP 451\uff1a\u51c6\u5907\u7981\u6b62\u52a8\u6001\u52a0\u8f7d\u4ee3\u7406<\/li>\n<\/ul>\n<p>\u7eb3\u5165\u5b89\u5168\u5e93\u7684 1 \u4e2a\u65b0\u7279\u6027\u662f\uff1a<\/p>\n<ul>\n<li>JEP 452\uff1a\u5bc6\u94a5\u5c01\u88c5\u673a\u5236 API<\/li>\n<\/ul>\n<p>\u5176\u4e2d 445 \u53f7\u63d0\u6848\uff0c\u4e5f\u5c0f\u5c0f\u7684\u706b\u4e86\u4e00\u628a\uff0c\u56e0\u4e3a\u5b83\u88ab\u5927\u591a\u6570\u7f51\u53cb\u8c03\u4f83\u4e3a\u201c\u5375\u7528\u4e0d\u5927\u201d\u3002<\/p>\n<p>\u56e0\u4e3a\u8fd9\u4e2a\u63d0\u6848\u662f\u4e3a\u4e86\u7b80\u5316 Hello World \u7684\u5199\u6cd5\u3002<\/p>\n<blockquote><p><a target=\"_blank\" href=\"https:\/\/link.segmentfault.com\/?enc=Zf%2BueDONz%2FDskcJQVbWYjg%3D%3D.n72gMFUlZqNLa7%2Bi0%2BVGPOlD8Rd%2FYS%2FBni2hSp7LOd0%3D\" rel=\"noopener noreferrer\">https:\/\/openjdk.org\/jeps\/445<\/a><\/p><\/blockquote>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044231431\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u5728\u8fd9\u4e2a\u63d0\u6848\u4e2d\uff0c\u4f5c\u8005\u8ba4\u4e3a\u6211\u4eec\u7684 Hello World \u592a\u590d\u6742\u4e86\uff0c\u8981\u5199\u8fd9\u4e48\u591a\u4ee3\u7801\uff1a<\/p>\n<pre><code>public class HelloWorld { \n    public static void main(String[] args) { \n        System.out.println(&quot;Hello, World!&quot;);\n    }\n}<\/code><\/pre>\n<p>\u6240\u4ee5\u4ed6\u63d0\u8bae\uff0c\u4e3a\u4e86 students \u548c beginner \u66f4\u5feb\u66f4\u597d\u7684\u5165\u95e8 Java\uff0c\u5e94\u8be5\u7b80\u5316\u6210\u8fd9\u6837\uff0c<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044231432\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u4f46\u662f\u8fd9\u4e2a\u63d0\u6848\u4e5f\u5f3a\u8c03\u4e86\uff1a\u8fd9\u662f\u9884\u89c8\u8bed\u8a00\u529f\u80fd\uff0c\u9ed8\u8ba4\u7981\u7528\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044231433\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u5982\u679c\u4f60\u8981\u7528\uff0c\u9700\u8981\u8fd9\u6837\u64cd\u4f5c\uff1a<\/p>\n<ul>\n<li>\u7528 javac &#8211;release 21 &#8211;enable-preview Main.java \u7f16\u8bd1\u7a0b\u5e8f\uff0c\u7528 java &#8211;enable-preview Main \u8fd0\u884c\u7a0b\u5e8f\u3002<\/li>\n<li>\u6216\u8005\uff0c\u5f53\u4f7f\u7528\u6e90\u4ee3\u7801\u542f\u52a8\u5668 source code launcher,\u65f6\uff0c\u7528 java &#8211;source 21 &#8211;enable-preview Main.java \u8fd0\u884c\u7a0b\u5e8f\u3002<\/li>\n<\/ul>\n<p>\u5bf9\u4e8e\u8fd9\u4e2a\u529f\u80fd\uff0c\u600e\u4e48\u8bf4\u7684\uff1f<\/p>\n<p>\u6211\u7684\u8bc4\u4ef7\u662f\uff1a\u8fd9\u5f88\u96be\u8bc4\u3002<\/p>\n<p>\u6700\u540e\uff0c\u518d\u8bf4\u4e00\u4e0b\u7f16\u53f7\u4e3a 439 \u7684\u63d0\u6848\u3002<\/p>\n<blockquote><p><a target=\"_blank\" href=\"https:\/\/link.segmentfault.com\/?enc=oubbXJcSlOvxzw%2BaJ%2BHf0Q%3D%3D.DFkQ9yKSh9J8nY%2BscXwEcZ2ijafBxicokkXpw06bdqc%3D\" rel=\"noopener noreferrer\">https:\/\/openjdk.org\/jeps\/439<\/a><\/p><\/blockquote>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044231434\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>ZGC\uff0c\u5927\u5bb6\u4e0d\u964c\u751f\u4e86\u5427\uff1f<\/p>\n<p>\u8fd9\u4e2a\u63d0\u6848\u63d0\u5230\u5b83\u662f\u5e72\u5565\u5462\uff1f<\/p>\n<p>\u76ee\u524d\u7684\u7248\u672c\u4e2d\uff0cZGC \u90fd\u662f\u4e0d\u5206\u4ee3 GC \u7684\u3002\u5728 JDK 21 \u7684\u7248\u672c\u4e2d\uff0c\u63d0\u4f9b\u4e86\u5206\u4ee3 GC \u7684\u529f\u80fd\uff0c\u4f46\u662f\u9ed8\u8ba4\u662f\u5173\u95ed\u72b6\u6001\uff0c\u9700\u8981\u901a\u8fc7\u914d\u7f6e\u6253\u5f00\uff1a<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044231435\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u800c\u4e14\uff0c\u6ce8\u610f\u6700\u540e\u8fd9\u53e5\u8bdd\uff1a<\/p>\n<blockquote><p>In a future release we intend to make Generational ZGC the default, at which point -XX:-ZGenerational will select non-generational ZGC. In an even later release we intend to remove non-generational ZGC, at which point the ZGenerational option will become obsolete.<\/p><\/blockquote>\n<p>\u5728\u672a\u6765\u7684\u7248\u672c\u4e2d\uff0c\u5b98\u65b9\u4f1a\u628a ZGenerational \u8bbe\u4e3a\u9ed8\u8ba4\u503c\uff0c\u5373\u9ed8\u8ba4\u6253\u5f00 ZGC \u7684\u5206\u4ee3 GC\u3002<\/p>\n<p>\u5728\u66f4\u665a\u7684\u7248\u672c\u4e2d\uff0c\u5b98\u65b9\u4f1a\u8003\u8651\u5220\u9664 ZGC \u7684\u4e0d\u5206\u4ee3 GC \u529f\u80fd\uff0c\u5230\u65f6\u5019 ZGenerational \u8fd9\u4e2a\u914d\u7f6e\u5c31\u4f1a\u88ab\u4e00\u5e76\u201c\u4f18\u5316\u201d\u3002<\/p>\n<p>\u8bf4\u5230\u8fd9\u4e2a ZGC \u7684\u5206\u4ee3 GC\uff0c\u6211\u7a81\u7136\u60f3\u8d77\u4e86\u4e00\u4e2a\u6709\u610f\u601d\u7684\u95ee\u9898\u3002<\/p>\n<p>\u5c31\u662f 2018 \u5e74\uff0c\u5728 JDK 11 \u7684\u91cc\u9762\uff0c\u521a\u521a\u5f00\u59cb\u5ba3\u4f20 ZGC \u7684\u65f6\u5019\uff0c\u5c31\u6709\u4eba\u95ee\uff1aZGC \u4e3a\u4ec0\u4e48\u4e0d\u8fdb\u884c\u5206\u4ee3\u554a\uff1f<\/p>\n<p>\u5173\u4e8e\u8fd9\u4e2a\u95ee\u9898\uff0c\u6211\u5728 R \u5927\u90a3\u91cc\u770b\u5230\u4e86\u4e00\u4e2a\u6743\u5a01\u7684\u56de\u7b54\uff1a<\/p>\n<blockquote><p><a target=\"_blank\" href=\"https:\/\/link.segmentfault.com\/?enc=BeOlF0x9t194OuDVPlcZHA%3D%3D.Cj2sffFdiNc5KJHf91a%2FWixurH8ZhatRiourV5KdbY3V5QCij7SiQMpXv2TdWPIbikYZzgTWzjy2D6Ldgt%2BayA%3D%3D\" rel=\"noopener noreferrer\">https:\/\/www.zhihu.com\/question\/287945354\/answer\/458761494<\/a><\/p><\/blockquote>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044231436\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u6ca1\u6709\u4ec0\u4e48\u7279\u522b\u7684\u539f\u56e0\uff0c\u5c31\u662f\u201c\u56e0\u4e3a\u5206\u4ee3\u5b9e\u73b0\u8d77\u6765\u9ebb\u70e6\uff0c\u60f3\u5148\u5b9e\u73b0\u51fa\u6bd4\u8f83\u7b80\u5355\u53ef\u7528\u7684\u7248\u672c\u201d\u800c\u5df2\u3002<\/p>\n<p>\u8fd9\u53e5\u8bdd\uff0c\u50cf\u4e0d\u50cf\u6211\u4eec\u5e38\u5e38\u542c\u5230\u7684\uff1a\u5148\u8dd1\u8d77\u6765\u518d\u8bf4\uff1f<\/p>\n<p>\u4f46\u662f\u4eba\u5bb6\u7684\u201c\u8dd1\u8d77\u6765\u518d\u8bf4\u201d\u548c\u6211\u4eec\u7684\u201c\u8dd1\u8d77\u6765\u518d\u8bf4\u201d\u5b8c\u5168\u4e0d\u662f\u4e00\u4e2a\u7ef4\u5ea6\u7684\u4e1c\u897f\u3002<\/p>\n<p>\u81f3\u5c11\uff0c\u4eba\u5bb6\u63d0\u4f9b\u7684\u201c\u8dd1\u8d77\u6765\u201d\u7684\u7248\u672c\uff0c\u4ece 2018 \u5e74\u8dd1\u5230\u4e86 2023 \u5e74\uff0c5 \u5e74\u65f6\u95f4\u3002<\/p>\n<p>\u800c\u4f60\u7684\u201c\u8dd1\u8d77\u6765\u518d\u8bf4\u201d\u53ef\u80fd\u4e00\u5468\u540e\u5c31\u63a5\u5230\u4e86\u5168\u65b0\u7684\u3001\u4e0d\u517c\u5bb9\u7684\u9700\u6c42\u3002<\/p>\n<p>5 \u5e74\u5c31\u66f4\u522b\u60f3\u4e86\uff0c\u4e1a\u52a1\u53ef\u80fd\u90fd\u88ab\u780d\u4e86\uff0c\u8dd1\u4e0d\u8d77\u6765\u4e86\u3002\uff08\u624b\u52a8\u72d7\u5934\uff09<\/p>\n<p>\u65e2\u7136\u90fd\u63d0\u5230\u4e86 ZGC \u4e86\uff0c\u90a3\u5c31\u987a\u4fbf\u63d0\u4e00\u5634 Shenandoah \u5427\u3002<\/p>\n<p>\u6839\u636e\u5b98\u65b9\u7684\u6d88\u606f\uff0c\u6700\u5f00\u59cb JDK 21 \u7684\u7248\u672c\u4e2d\u662f\u5305\u542b\u4e86 Shenandoah \u7684\u3002<\/p>\n<blockquote><p><a target=\"_blank\" href=\"https:\/\/link.segmentfault.com\/?enc=%2BgLCBaskTy%2FqRmQCjREzsA%3D%3D.aP3abPDl2laP4U57fHN%2BbcJpSMruAbFo7qiDBrKDhmA%3D\" rel=\"noopener noreferrer\">https:\/\/openjdk.org\/jeps\/404<\/a><\/p><\/blockquote>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044231437\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u4f46\u662f\u4e3a\u4ec0\u4e48 GA \u7248\u672c\u4e2d\u6ca1\u6709\u770b\u5230\u5b83\u7684\u5f71\u5b50\u5462\uff1f<\/p>\n<p>\u53ef\u4ee5\u770b\u770b\u5b98\u65b9 6 \u6708\u4efd\u7684\u8fd9\u4e2a\u90ae\u4ef6\uff1a<\/p>\n<blockquote><p><a target=\"_blank\" href=\"https:\/\/link.segmentfault.com\/?enc=0Yaqn7aijH7MpfQhiAYCjA%3D%3D.DzEvhtKjb5gQWuz%2BbIYU63ryTjDTdynOevRz0CoC9XfwtpyaYMWIzIKInRo0QkCF0oC4%2F5QdKEnWFmMhqcjoFDd8RTOLG2Okxftka%2BneiBk%3D\" rel=\"noopener noreferrer\">https:\/\/mail.openjdk.org\/pipermail\/jdk-dev\/2023-June\/007959.html<\/a><\/p><\/blockquote>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044231438\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u522b\u95ee\uff0c\u95ee\u5c31\u662f\u65f6\u95f4\u7d27\uff0c\u4efb\u52a1\u91cd\uff0c\u7533\u8bf7\u5ef6\u671f\u3002<\/p>\n<p>\u9996\u5148\u63cf\u8ff0\u4e86\u539f\u56e0\uff1a<\/p>\n<blockquote><p>Given the risks identified during the review process and the lack of time available to perform the thorough review that such a large contribution of code requires<\/p><\/blockquote>\n<p>\u56e0\u4e3a Shenandoah \u5728\u5ba1\u67e5\u7684\u8fc7\u7a0b\u4e2d\u53d1\u73b0\u4e86\u660e\u786e\u7684\u98ce\u9669\uff0c\u5e76\u4e14\u6ca1\u6709\u8db3\u591f\u7684\u65f6\u95f4\u6765\u8fdb\u884c\u9488\u5bf9\u5927\u91cf\u4ee3\u7801\u6539\u52a8\u6240\u9700\u7684\u8bc4\u5ba1\u3002<\/p>\n<p>\u7136\u540e\u753b\u4e86\u4e00\u4e2a\u65b0\u997c\uff1a<\/p>\n<blockquote><p>take the time to deliver the best Generational Shenandoah that we can.<\/p><\/blockquote>\n<p>Shenandoah \u56e2\u961f\u51b3\u5b9a\u201c\u5c3d\u4ed6\u4eec\u6240\u80fd\u63d0\u4f9b\u6700\u597d\u7684\u5206\u4ee3 Shenandoah\u201d\u3002<\/p>\n<p>\u5e76\u7ed9\u81ea\u5df1\u8bbe\u7f6e\u4e86\u4e00\u4e2a\u65b0\u4efb\u52a1\uff0c\u5c06 JDK 22 \u4f5c\u4e3a\u53d1\u5e03\u76ee\u6807\uff1a<\/p>\n<blockquote><p>We will seek to target JDK 22.<\/p><\/blockquote>\n<p>\u80fd\u600e\u4e48\u529e\uff0c\u7b49\u7740\u5457\u3002<\/p>\n<p>\u53cd\u6b63\u4f60\u53d1\u4efb\u4f60\u53d1\uff0c\u6211\u7528 Java 8\uff01<\/p>\n<p>\u8bdd\u867d\u7136\u662f\u8fd9\u4e48\u8bf4\uff0c\u4f46\u662f\u6211\u8fd8\u662f\u5e0c\u671b\u5728\u6211\u77ed\u6682\u7684\u804c\u4e1a\u751f\u6daf\u4e2d\uff0c\u6709\u5e78\u80fd\u5728\u751f\u4ea7\u4e0a\u4f7f\u7528\u5230 JDK 21\uff0c\u4f53\u4f1a\u4e00\u4e0b\u865a\u62df\u7ebf\u7a0b\u548c ZGC \u5e26\u6765\u7684\u53cc\u91cd\u670d\u52a1\u3002<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044231439\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p><a href=\"https:\/\/segmentfault.com\/a\/1190000044231423\">https:\/\/segmentfault.com\/a\/1190000044231423<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f60\u597d\u5440\uff0c\u6211\u662f\u6b6a\u6b6a\u3002 \u670b\u53cb\u4eec\uff0c\u597d\u6d88\u606f\uff0c\u597d\u6d88\u606f\uff0c\u91cd\u78c5\u597d\u6d88\u606f\u3002 \u4ece\u4eca\u5e74\u5e74\u521d\u5c31\u4e00\u76f4\u5728\u558a\u7684\u5177\u6709\u9769\u547d\u6027\u3001\u672a\u6765\u6027\u3001\u5f00\u521b\u65b0\u7eaa\u5143 [&hellip;]<\/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-10008286","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\/10008286","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=10008286"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10008286\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10008286"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10008286"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10008286"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}