{"id":1791,"date":"2019-01-16T10:16:12","date_gmt":"2019-01-16T02:16:12","guid":{"rendered":"http:\/\/blog.eolinker.com\/?p=1791"},"modified":"2019-01-31T14:39:44","modified_gmt":"2019-01-31T06:39:44","slug":"java-12-%e5%b0%86%e4%ba%8e3%e6%9c%8819%e6%97%a5%e5%8f%91%e5%b8%83%ef%bc%8c8-%e4%b8%aa%e6%9c%80%e7%bb%88-jep-%e4%b8%80%e8%a7%88","status":"publish","type":"post","link":"http:\/\/blog.eolinker.com\/?p=1791","title":{"rendered":"Java \u65b0\u7248\u672c\u5c06\u4e8e3\u670819\u65e5\u53d1\u5e03\uff0c8 \u4e2a\u6700\u7ec8 JEP \u4e00\u89c8"},"content":{"rendered":"<p><img src=\"https:\/\/data.eolinker.com\/C6PMyenb4e255693feb644a8c551f141ae388feb76db619.jpg\" \/><\/p>\n<p>JDK 12 \u5df2\u4e8e2018\u5e7412\u6708\u8fdb\u5165\u00a0<a href=\"http:\/\/openjdk.java.net\/projects\/jdk\/12\/\" target=\"_blank\" rel=\"noopener\" data-cke-saved-href=\"http:\/\/openjdk.java.net\/projects\/jdk\/12\/\">Rampdown Phase One<\/a>\u00a0\u9636\u6bb5\uff0c\u8fd9\u610f\u5473\u7740\u8be5\u7248\u672c\u6240\u6709\u65b0\u7684\u529f\u80fd\u7279\u6027\u88ab\u51bb\u7ed3\uff0c\u4e0d\u4f1a\u518d\u52a0\u5165\u66f4\u591a\u7684 JEP \u3002\u8be5\u9636\u6bb5\u5c06\u6301\u7eed\u4e00\u4e2a\u6708\uff0c\u4e3b\u8981<a href=\"https:\/\/bugs.openjdk.java.net\/issues\/?filter=33404\" target=\"_blank\" rel=\"noopener\" data-cke-saved-href=\"https:\/\/bugs.openjdk.java.net\/issues\/?filter=33404\">\u4fee\u590d P1-P3 \u7ea7\u9519\u8bef<\/a>\u3002JDK 12 \u5b9a\u4e8e2019\u5e743\u670819\u65e5\u6b63\u5f0f\u53d1\u5e03\u3002<\/p>\n<p><!--more--><\/p>\n<p><img src=\"https:\/\/data.eolinker.com\/rjex8Bc049318acf2d369dbb5110133329b6f689f7ac4b3.jpg\" \/><\/p>\n<p>\u4f5c\u4e3a\u201c\u529f\u80fd\u6027\u7248\u672c\u201d\uff0cJDK 12 \u603b\u5171\u5305\u542b 8 \u4e2a\u65b0\u7684 JEP \uff0c\u5206\u522b\u4e3a\uff1a<\/p>\n<ul class=\" list-paddingleft-2\">\n<li>189:\u00a0<a href=\"http:\/\/openjdk.java.net\/jeps\/189\" target=\"_blank\" rel=\"noopener\" data-cke-saved-href=\"http:\/\/openjdk.java.net\/jeps\/189\">Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)<\/a>\u00a0\uff1a\u65b0\u589e\u4e00\u4e2a\u540d\u4e3a Shenandoah \u7684\u5783\u573e\u56de\u6536\u5668\uff0c\u5b83\u901a\u8fc7\u5728 Java \u7ebf\u7a0b\u8fd0\u884c\u7684\u540c\u65f6\u8fdb\u884c\u758f\u6563 (evacuation) \u5de5\u4f5c\u6765\u51cf\u5c11\u505c\u987f\u65f6\u95f4\u3002<\/li>\n<li>230:\u00a0<a href=\"http:\/\/openjdk.java.net\/jeps\/230\" target=\"_blank\" rel=\"noopener\" data-cke-saved-href=\"http:\/\/openjdk.java.net\/jeps\/230\">Microbenchmark Suite<\/a>\uff1a\u65b0\u589e\u4e00\u5957\u5fae\u57fa\u51c6\u6d4b\u8bd5\uff0c\u4f7f\u5f00\u53d1\u8005\u80fd\u591f\u57fa\u4e8e\u73b0\u6709\u7684 Java Microbenchmark Harness\uff08JMH\uff09\u8f7b\u677e\u6d4b\u8bd5 JDK \u7684\u6027\u80fd\uff0c\u5e76\u521b\u5efa\u65b0\u7684\u57fa\u51c6\u6d4b\u8bd5\u3002<\/li>\n<li>325:\u00a0<a href=\"http:\/\/openjdk.java.net\/jeps\/325\" target=\"_blank\" rel=\"noopener\" data-cke-saved-href=\"http:\/\/openjdk.java.net\/jeps\/325\">Switch Expressions (Preview)<\/a>\u00a0\uff1a\u5bf9 switch \u8bed\u53e5\u8fdb\u884c\u6269\u5c55\uff0c\u4f7f\u5176\u53ef\u4ee5\u7528\u4f5c\u8bed\u53e5\u6216\u8868\u8fbe\u5f0f\uff0c\u7b80\u5316\u65e5\u5e38\u4ee3\u7801\u3002<\/li>\n<li>334:\u00a0<a href=\"http:\/\/openjdk.java.net\/jeps\/334\" target=\"_blank\" rel=\"noopener\" data-cke-saved-href=\"http:\/\/openjdk.java.net\/jeps\/334\">JVM Constants API<\/a>\u00a0\uff1a\u5f15\u5165\u4e00\u4e2a API \u6765\u5bf9\u5173\u952e\u7c7b\u6587\u4ef6 (key class-file) \u548c\u8fd0\u884c\u65f6\u5de5\u4ef6\u7684\u540d\u4e49\u63cf\u8ff0\uff08nominal descriptions\uff09\u8fdb\u884c\u5efa\u6a21\uff0c\u7279\u522b\u662f\u90a3\u4e9b\u53ef\u4ece\u5e38\u91cf\u6c60\u52a0\u8f7d\u7684\u5e38\u91cf\u3002<\/li>\n<li>340:\u00a0<a href=\"http:\/\/openjdk.java.net\/jeps\/340\" target=\"_blank\" rel=\"noopener\" data-cke-saved-href=\"http:\/\/openjdk.java.net\/jeps\/340\">One AArch64 Port, Not Two<\/a>\u00a0\uff1a\u5220\u9664\u4e0e arm64 \u7aef\u53e3\u76f8\u5173\u7684\u6240\u6709\u6e90\u7801\uff0c\u4fdd\u7559 32 \u4f4d ARM \u79fb\u690d\u548c 64 \u4f4d aarch64 \u79fb\u690d\u3002<\/li>\n<li>341:\u00a0<a href=\"http:\/\/openjdk.java.net\/jeps\/341\" target=\"_blank\" rel=\"noopener\" data-cke-saved-href=\"http:\/\/openjdk.java.net\/jeps\/341\">Default CDS Archives<\/a>\u00a0\uff1a\u9ed8\u8ba4\u751f\u6210\u7c7b\u6570\u636e\u5171\u4eab\uff08CDS\uff09\u5b58\u6863\u3002<\/li>\n<li>344:\u00a0<a href=\"http:\/\/openjdk.java.net\/jeps\/344\" target=\"_blank\" rel=\"noopener\" data-cke-saved-href=\"http:\/\/openjdk.java.net\/jeps\/344\">Abortable Mixed Collections for G1<\/a>\u00a0\uff1a\u5f53 G1 \u5783\u573e\u56de\u6536\u5668\u7684\u56de\u6536\u8d85\u8fc7\u6682\u505c\u76ee\u6807\uff0c\u5219\u80fd\u4e2d\u6b62\u5783\u573e\u56de\u6536\u8fc7\u7a0b\u3002<\/li>\n<li>346:\u00a0<a href=\"http:\/\/openjdk.java.net\/jeps\/346\" target=\"_blank\" rel=\"noopener\" data-cke-saved-href=\"http:\/\/openjdk.java.net\/jeps\/346\">Promptly Return Unused Committed Memory from G1<\/a>\u00a0\uff1a\u6539\u8fdb G1 \u5783\u573e\u56de\u6536\u5668\uff0c\u4ee5\u4fbf\u5728\u7a7a\u95f2\u65f6\u81ea\u52a8\u5c06 Java \u5806\u5185\u5b58\u8fd4\u56de\u7ed9\u64cd\u4f5c\u7cfb\u7edf\u3002<\/li>\n<\/ul>\n<p>\u4f60\u76ee\u524d\u6b63\u5728\u4f7f\u7528\u54ea\u4e2a Java \u7248\u672c\uff1f2019\u5e74\u662f\u5426\u6709\u8fc1\u79fb\u8ba1\u5212\uff1f\u6b22\u8fce\u8bc4\u8bba~<\/p>\n<p>\u6587\u7ae0\u8f6c\u8f7d\u81ea \u5f00\u6e90\u4e2d\u56fd\u793e\u533a\u00a0<a class=\"green\" href=\"https:\/\/www.oschina.net\/\">[http:\/\/www.oschina.net]<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>JDK 12 \u5df2\u4e8e2018\u5e7412\u6708\u8fdb\u5165\u00a0Rampdown Phase One\u00a0\u9636\u6bb5\uff0c\u8fd9\u610f\u5473\u7740\u8be5\u7248\u672c\u6240\u6709\u65b0\u7684\u529f\u80fd [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[38],"tags":[],"_links":{"self":[{"href":"http:\/\/blog.eolinker.com\/index.php?rest_route=\/wp\/v2\/posts\/1791"}],"collection":[{"href":"http:\/\/blog.eolinker.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blog.eolinker.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blog.eolinker.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/blog.eolinker.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1791"}],"version-history":[{"count":5,"href":"http:\/\/blog.eolinker.com\/index.php?rest_route=\/wp\/v2\/posts\/1791\/revisions"}],"predecessor-version":[{"id":1900,"href":"http:\/\/blog.eolinker.com\/index.php?rest_route=\/wp\/v2\/posts\/1791\/revisions\/1900"}],"wp:attachment":[{"href":"http:\/\/blog.eolinker.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1791"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blog.eolinker.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1791"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blog.eolinker.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1791"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}