{"id":50681,"date":"2024-01-19T04:35:59","date_gmt":"2022-12-01T23:18:24","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/java-13%e5%8a%9f%e8%83%bd\/"},"modified":"2024-05-04T19:02:23","modified_gmt":"2024-05-04T11:02:23","slug":"java-13%e5%8a%9f%e8%83%bd","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/java-13%e5%8a%9f%e8%83%bd\/","title":{"rendered":"Java 13\u529f\u80fd"},"content":{"rendered":"<p>Java 13 \u57282019\u5e749\u670817\u65e5\u53d1\u5e03\uff0c\u53ef\u7528\u4e8e\u751f\u4ea7\u73af\u5883\u3002\u7531\u4e8e6\u4e2a\u6708\u7684\u53d1\u5e03\u5468\u671f\uff0cJava 13\u4e2d\u5e76\u6ca1\u6709\u5f88\u591a\u9488\u5bf9\u5f00\u53d1\u8005\u7684\u7279\u6027\u3002<\/p>\n<h2>Java 13\u529f\u80fd<\/h2>\n<p>Java 13\u7684\u4e00\u4e9b\u91cd\u8981\u7279\u6027\u5305\u62ec\uff1a<\/p>\n<ul class=\"post-ul\">\n<li>Text Blocks &#8211; JEP 355<\/li>\n<li>New Methods in String Class for Text Blocks<\/li>\n<li>Switch Expressions Enhancements &#8211; JEP 354<\/li>\n<li>Reimplement the Legacy Socket API &#8211; JEP 353<\/li>\n<li>Dynamic CDS Archive &#8211; JEP 350<\/li>\n<li>ZGC: Uncommit Unused Memory &#8211; JEP 351<\/li>\n<li>FileSystems.newFileSystem() Method<\/li>\n<li>Support for Unicode 12.1<\/li>\n<li>DOM and SAX Factories with Namespace Support<\/li>\n<\/ul>\n<h2>\u5982\u4f55\u542f\u7528\u9884\u89c8\u529f\u80fd<\/h2>\n<p>\u5207\u6362\u8868\u8fbe\u5f0f\u548c\u6587\u672c\u5757\u662f\u9884\u89c8\u529f\u80fd\u3002\u56e0\u6b64\uff0c\u60a8\u9700\u8981\u5728\u9879\u76ee\u4e2d\u542f\u7528\u9884\u89c8\u529f\u80fd\u8bbe\u7f6e\u3002\u5982\u679c\u60a8\u4ece\u547d\u4ee4\u884c\u8fd0\u884cJava\u7a0b\u5e8f\uff0c\u53ef\u4ee5\u4f7f\u7528&#8211;enable-preview\u5f00\u5173\u542f\u7528\u5b83\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u6b64\u5f00\u5173\u542f\u52a8\u542f\u7528\u4e86\u9884\u89c8\u529f\u80fd\u7684JShell\u3002<\/p>\n<pre class=\"post-pre\"><code>$ jshell --enable-preview\r\n\r\n$ java --enable-preview --source 13 Test.java\r\n<\/code><\/pre>\n<p>\u5982\u679c\u4f60\u6b63\u5728\u4f7f\u7528Eclipse IDE\uff0c\u4f60\u53ef\u4ee5\u5728\u9879\u76ee\u7684Java\u7f16\u8bd1\u5668\u8bbe\u7f6e\u4e2d\u542f\u7528\u9884\u89c8\u529f\u80fd\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/6564846ca4b2f92e6c72fd35\/8-0.png\" alt=\"Eclipse Enable Preview Features\" \/><\/div>\n<h2>\u6587\u672c\u5757 &#8211; JEP 355<\/h2>\n<p>\u6587\u672c\u5757 &#8211; JEP 355<\/p>\n<p>\u8fd9\u662f\u4e00\u4e2a\u9884\u89c8\u529f\u80fd\u3002\u5b83\u5141\u8bb8\u6211\u4eec\u8f7b\u677e\u5730\u521b\u5efa\u591a\u884c\u5b57\u7b26\u4e32\u3002\u591a\u884c\u5b57\u7b26\u4e32\u5fc5\u987b\u5199\u5728\u4e00\u5bf9\u4e09\u91cd\u53cc\u5f15\u53f7\u4e4b\u95f4\u3002\u4f7f\u7528\u6587\u672c\u5757\u521b\u5efa\u7684\u5b57\u7b26\u4e32\u5bf9\u8c61\u6ca1\u6709\u989d\u5916\u7684\u5c5e\u6027\u3002\u8fd9\u662f\u4e00\u79cd\u66f4\u7b80\u5355\u7684\u521b\u5efa\u591a\u884c\u5b57\u7b26\u4e32\u7684\u65b9\u5f0f\u3002\u6211\u4eec\u4e0d\u80fd\u4f7f\u7528\u6587\u672c\u5757\u6765\u521b\u5efa\u5355\u884c\u5b57\u7b26\u4e32\u3002\u5f00\u5934\u7684\u4e09\u91cd\u53cc\u5f15\u53f7\u5fc5\u987b\u8ddf\u968f\u4e00\u4e2a\u6362\u884c\u7b26\u3002<\/p>\n<pre class=\"post-pre\"><code>package com.Olivia.java13.examples;\r\n\r\npublic class TextBlockString {\r\n\r\n\t\/**\r\n\t * JEP 355: Preview Feature\r\n\t *\/\r\n\t@SuppressWarnings(\"preview\")\r\n\tpublic static void main(String[] args) {\r\n\t\tString textBlock = \"\"\"\r\n\t\t\t\tHi\r\n\t\t\t\tHello\r\n\t\t\t\tYes\"\"\";\r\n\r\n\t\tString str = \"Hi\\nHello\\nYes\";\r\n\r\n\t\tSystem.out.println(\"Text Block String:\\n\" + textBlock);\r\n\t\tSystem.out.println(\"Normal String Literal:\\n\" + str);\r\n\r\n\t\tSystem.out.println(\"Text Block and String Literal equals() Comparison: \" + (textBlock.equals(str)));\r\n\t\tSystem.out.println(\"Text Block and String Literal == Comparison: \" + (textBlock == str));\r\n\t}\r\n\r\n}\r\n<\/code><\/pre>\n<p>\u8f93\u51fa\uff1a<\/p>\n<pre class=\"post-pre\"><code>Text Block String:\r\nHi\r\nHello\r\nYes\r\nNormal String Literal:\r\nHi\r\nHello\r\nYes\r\nText Block and String Literal equals() Comparison: true\r\nText Block and String Literal == Comparison: true\r\n<\/code><\/pre>\n<p>\u5728\u6211\u4eec\u7684Java\u7a0b\u5e8f\u4e2d\uff0c\u4f7f\u7528\u5b83\u53ef\u4ee5\u8f7b\u677e\u5730\u521b\u5efaHTML\u548cJSON\u5b57\u7b26\u4e32\u3002<\/p>\n<pre class=\"post-pre\"><code>String textBlockHTML = \"\"\"\r\n\t\t&lt;html&gt;\r\n\t\t&lt;head&gt;\r\n\t\t\t&lt;link href='\/css\/style.css' rel='stylesheet' \/&gt;\r\n\t\t&lt;\/head&gt;\r\n\t\t&lt;body&gt;\r\n                        &lt;h1&gt;Hello World&lt;\/h1&gt;\r\n                &lt;\/body&gt;\r\n                &lt;\/html&gt;\"\"\";\r\n\r\nString textBlockJSON = \"\"\"\r\n\t\t{\r\n\t\t\t\"name\":\"Pankaj\",\r\n\t\t\t\"website\":\"JournalDev\"\r\n\t\t}\"\"\";\r\n<\/code><\/pre>\n<h2>2. \u5b57\u7b26\u4e32\u7c7b\u4e2d\u9488\u5bf9\u6587\u672c\u5757\u7684\u65b0\u65b9\u6cd5<\/h2>\n<p>String\u7c7b\u4e2d\u6709\u4e09\u79cd\u4e0e\u6587\u672c\u5757\u529f\u80fd\u76f8\u5173\u7684\u65b0\u65b9\u6cd5\u3002<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>formatted\uff08Object&#8230; args\uff09\uff1a\u8fd9\u4e0eString\u7c7b\u7684format()\u65b9\u6cd5\u76f8\u4f3c\u3002\u5b83\u7528\u4e8e\u652f\u6301\u4f7f\u7528\u6587\u672c\u5757\u8fdb\u884c\u683c\u5f0f\u5316\u3002<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>stripIndent()\uff1a\u7528\u4e8e\u4ece\u6587\u672c\u5757\u7684\u6bcf\u884c\u5f00\u5934\u548c\u7ed3\u5c3e\u79fb\u9664\u9644\u5e26\u7684\u7a7a\u767d\u5b57\u7b26\u3002\u8be5\u65b9\u6cd5\u7531\u6587\u672c\u5757\u4f7f\u7528\uff0c\u5e76\u4fdd\u7559\u5185\u5bb9\u7684\u76f8\u5bf9\u7f29\u8fdb\u3002<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>translateEscapes()\uff1a\u8fd4\u56de\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u5176\u503c\u662f\u5c06\u6240\u6709\u8f6c\u4e49\u5e8f\u5217\u7ffb\u8bd1\u4e3a\u5b57\u7b26\u4e32\u6587\u5b57\u4e2d\u7c7b\u4f3c\u7684\u5f62\u5f0f\u7684\u8be5\u5b57\u7b26\u4e32\u7684\u503c\u3002<\/ol>\n<pre class=\"post-pre\"><code>package com.Olivia.java13.examples;\r\n\r\npublic class StringNewMethods {\r\n\r\n\t\/***\r\n\t * New methods are to be used with Text Block Strings\r\n\t * @param args\r\n\t *\/\r\n\t@SuppressWarnings(\"preview\")\r\n\tpublic static void main(String[] args) {\r\n\t\t\r\n\t\tString output = \"\"\"\r\n\t\t\t    Name: %s\r\n\t\t\t    Phone: %d\r\n\t\t\t    Salary: $%.2f\r\n\t\t\t    \"\"\".formatted(\"Pankaj\", 123456789, 2000.5555);\r\n\t\t\r\n\t\tSystem.out.println(output);\r\n\t\t\r\n\t\t\r\n\t\tString htmlTextBlock = \"&lt;html&gt;   \\n\"+\r\n\t\t\t\t                    \"\\t&lt;body&gt;\\t\\t \\n\"+\r\n\t\t\t\t                        \"\\t\\t&lt;p&gt;Hello&lt;\/p&gt;  \\t \\n\"+\r\n\t\t\t\t                    \"\\t&lt;\/body&gt; \\n\"+\r\n\t\t\t\t                \"&lt;\/html&gt;\";\r\n\t\tSystem.out.println(htmlTextBlock.replace(\" \", \"*\"));\r\n\t\tSystem.out.println(htmlTextBlock.stripIndent().replace(\" \", \"*\"));\r\n\t\t\r\n\t\tString str1 = \"Hi\\t\\nHello' \\\" \/u0022 Pankaj\\r\";\r\n\t\tSystem.out.println(str1);\r\n\t\tSystem.out.println(str1.translateEscapes());\r\n\t\t\r\n\t}\r\n\r\n}\r\n<\/code><\/pre>\n<p>\u8f93\u51fa\uff1a\u8bf7\u7528\u4e2d\u6587\u5c06\u4ee5\u4e0b\u5185\u5bb9\u8fdb\u884c\u6539\u8ff0\uff0c\u53ea\u9700\u8981\u4e00\u4e2a\u9009\u9879\uff1a<\/p>\n<p>One possible paraphrase in Chinese:\u8bf7\u4ee5\u6c49\u8bed\u5b8c\u6210\u4ee5\u4e0b\u5185\u5bb9\u7684\u6539\u8ff0\uff0c\u53ea\u9700\u8981\u4e00\u4e2a\u9009\u9879\uff1a<\/p>\n<pre class=\"post-pre\"><code>Name: Pankaj\r\nPhone: 123456789\r\nSalary: $2000.56\r\n\r\n&lt;html&gt;***\r\n\t&lt;body&gt;\t\t*\r\n\t\t&lt;p&gt;Hello&lt;\/p&gt;**\t*\r\n\t&lt;\/body&gt;*\r\n&lt;\/html&gt;\r\n&lt;html&gt;\r\n\t&lt;body&gt;\r\n\t\t&lt;p&gt;Hello&lt;\/p&gt;\r\n\t&lt;\/body&gt;\r\n&lt;\/html&gt;\r\nHi\t\r\nHello' \" \/u0022 Pankaj\r\nHi\t\r\nHello' \" \/u0022 Pankaj\r\n<\/code><\/pre>\n<h2>3. \u4ee3\u7801\u8868\u8fbe\u5f0f\u589e\u5f3a- JEP 354<\/h2>\n<p>\u5728Java 12\u53d1\u5e03\u4e2d\uff0c\u4f5c\u4e3a\u9884\u89c8\u529f\u80fd\uff0c\u5f15\u5165\u4e86Switch\u8868\u8fbe\u5f0f\u3002\u5728Java 13\u4e2d\u51e0\u4e4e\u76f8\u540c\uff0c\u53ea\u662f\u5c06\u201cbreak\u201d\u66ff\u6362\u4e3a\u201cyield\u201d\u4ee5\u4ececase\u8bed\u53e5\u4e2d\u8fd4\u56de\u4e00\u4e2a\u503c\u3002<\/p>\n<pre class=\"post-pre\"><code>package com.Olivia.java13.examples;\r\n\r\n\/**\r\n * JEP 354: Switch Expressions\r\n * https:\/\/openjdk.java.net\/jeps\/354\r\n * @author pankaj\r\n *\r\n *\/\r\npublic class SwitchEnhancements {\r\n\r\n\t@SuppressWarnings(\"preview\")\r\n\tpublic static void main(String[] args) {\r\n\t\tint choice = 2;\r\n\r\n\t\tswitch (choice) {\r\n\t\tcase 1:\r\n\t\t\tSystem.out.println(choice);\r\n\t\t\tbreak;\r\n\t\tcase 2:\r\n\t\t\tSystem.out.println(choice);\r\n\t\t\tbreak;\r\n\t\tcase 3:\r\n\t\t\tSystem.out.println(choice);\r\n\t\t\tbreak;\r\n\t\tdefault:\r\n\t\t\tSystem.out.println(\"integer is greater than 3\");\r\n\t\t}\r\n\r\n\t\t\/\/ from java 13 onwards - multi-label case statements\r\n\t\tswitch (choice) {\r\n\t\tcase 1, 2, 3:\r\n\t\t\tSystem.out.println(choice);\r\n\t\t\tbreak;\r\n\t\tdefault:\r\n\t\t\tSystem.out.println(\"integer is greater than 3\");\r\n\t\t}\r\n\r\n\t\t\/\/ switch expressions, use yield to return, in Java 12 it was break\r\n\t\tint x = switch (choice) {\r\n\t\tcase 1, 2, 3:\r\n\t\t\tyield choice;\r\n\t\tdefault:\r\n\t\t\tyield -1;\r\n\t\t};\r\n\t\tSystem.out.println(\"x = \" + x);\r\n\r\n\t}\r\n\r\n\tenum Day {\r\n\t\tSUN, MON, TUE\r\n\t};\r\n\r\n\t@SuppressWarnings(\"preview\")\r\n\tpublic String getDay(Day d) {\r\n\t\tString day = switch (d) {\r\n\t\tcase SUN -&gt; \"Sunday\";\r\n\t\tcase MON -&gt; \"Monday\";\r\n\t\tcase TUE -&gt; \"Tuesday\";\r\n\t\t};\r\n\t\treturn day;\r\n\t}\r\n}\r\n<\/code><\/pre>\n<h2>\u91cd\u65b0\u5b9e\u73b0\u4f20\u7edf\u5957\u63a5\u5b57 API &#8211; JEP 353<\/h2>\n<p>java.net.Socket\u548cjava.net.ServerSocketAPI\u7684\u5e95\u5c42\u5b9e\u73b0\u5df2\u7ecf\u88ab\u91cd\u5199\u3002\u65b0\u7684\u5b9e\u73b0NioSocketImpl\u662fPlainSocketImpl\u7684\u4e00\u4e2a\u53ef\u66ff\u6362\u7684\u7248\u672c\u3002\u5b83\u4f7f\u7528java.util.concurrent\u9501\u4ee3\u66ff\u4e86\u540c\u6b65\u65b9\u6cd5\u3002\u5982\u679c\u60a8\u60f3\u4f7f\u7528\u65e7\u7684\u5b9e\u73b0\uff0c\u53ef\u4ee5\u4f7f\u7528java\u9009\u9879-Djdk.net.usePlainSocketImpl\u3002<\/p>\n<h2>5. \u52a8\u6001CDS\u5b58\u6863 &#8211; JEP 350<\/h2>\n<p>\u8fd9\u4e2aJEP\u6269\u5c55\u4e86Java 10\u4e2d\u5f15\u5165\u7684\u7c7b\u6570\u636e\u5171\u4eab\u529f\u80fd\u3002\u73b0\u5728\uff0c\u521b\u5efaCDS\u5b58\u6863\u5e76\u4f7f\u7528\u5b83\u53d8\u5f97\u66f4\u52a0\u5bb9\u6613\u3002<\/p>\n<pre class=\"post-pre\"><code>$ java -XX:ArchiveClassesAtExit=my_app_cds.jsa -cp my_app.jar\r\n\r\n$ java -XX:SharedArchiveFile=my_app_cds.jsa -cp my_app.jar\r\n<\/code><\/pre>\n<h2>6. ZGC: \u672a\u4f7f\u7528\u5185\u5b58\u89e3\u9664\u63d0\u4ea4 &#8211; JEP 351<\/h2>\n<p>\u8fd9\u4e2aJEP\u589e\u5f3a\u4e86ZGC\u4ee5\u5c06\u672a\u4f7f\u7528\u7684\u5806\u5185\u5b58\u8fd4\u8fd8\u7ed9\u64cd\u4f5c\u7cfb\u7edf\u3002Z\u5783\u573e\u6536\u96c6\u5668\u5728Java 11\u4e2d\u88ab\u5f15\u5165\u3002\u5b83\u5728\u5806\u5185\u5b58\u6e05\u7406\u4e4b\u524d\u589e\u52a0\u4e86\u4e00\u5c0f\u6bb5\u6682\u505c\u65f6\u95f4\u3002\u7136\u800c\uff0c\u672a\u4f7f\u7528\u7684\u5185\u5b58\u5e76\u6ca1\u6709\u88ab\u8fd4\u8fd8\u7ed9\u64cd\u4f5c\u7cfb\u7edf\u3002\u8fd9\u5bf9\u4e8e\u5185\u5b58\u5360\u7528\u8f83\u5c0f\u7684\u8bbe\u5907\uff0c\u5982\u7269\u8054\u7f51\u548c\u5fae\u578b\u82af\u7247\uff0c\u662f\u4e00\u4e2a\u4ee4\u4eba\u62c5\u5fe7\u7684\u95ee\u9898\u3002\u73b0\u5728\uff0c\u5b83\u5df2\u7ecf\u88ab\u589e\u5f3a\u4ee5\u5c06\u672a\u4f7f\u7528\u7684\u5185\u5b58\u8fd4\u8fd8\u7ed9\u64cd\u4f5c\u7cfb\u7edf\u3002<\/p>\n<h2>7. FileSystems.newFileSystem() \u65b9\u6cd5<\/h2>\n<p>FileSystems\u7c7b\u5df2\u6dfb\u52a0\u4e86\u4e09\u79cd\u65b0\u7684\u65b9\u6cd5\uff0c\u4ee5\u4fbf\u66f4\u65b9\u4fbf\u5730\u4f7f\u7528\u6587\u4ef6\u7cfb\u7edf\u63d0\u4f9b\u7a0b\u5e8f\uff0c\u8fd9\u4e9b\u63d0\u4f9b\u7a0b\u5e8f\u5c06\u6587\u4ef6\u7684\u5185\u5bb9\u89c6\u4e3a\u6587\u4ef6\u7cfb\u7edf\u3002<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u65b0\u5efa\u6587\u4ef6\u7cfb\u7edf(Path)<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u65b0\u5efa\u6587\u4ef6\u7cfb\u7edf(Path, Map&lt;String, ?&gt;)<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\u65b0\u5efa\u6587\u4ef6\u7cfb\u7edf(Path, Map&lt;String, ?&gt;, ClassLoader)<\/ol>\n<h2>8. \u5177\u5907\u547d\u540d\u7a7a\u95f4\u652f\u6301\u7684DOM\u548cSAX\u5de5\u5382<\/h2>\n<p>\u6709\u65b0\u7684\u65b9\u6cd5\u6765\u5b9e\u4f8b\u5316\u5177\u6709\u547d\u540d\u7a7a\u95f4\u652f\u6301\u7684DOM\u548cSAX\u5de5\u5382\u3002<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u521b\u5efa\u9ed8\u8ba4\u7684\u547d\u540d\u7a7a\u95f4\u5b9e\u4f8b\u3002<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u521b\u5efa\u547d\u540d\u7a7a\u95f4\u5b9e\u4f8b\u3002<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\u521b\u5efa\u547d\u540d\u7a7a\u95f4\u5b9e\u4f8b\uff0c\u5e76\u6307\u5b9a\u5de5\u5382\u7c7b\u540d\u548c\u7c7b\u52a0\u8f7d\u5668\u3002<\/ol>\n<pre class=\"post-pre\"><code>\/\/java 13 onwards\r\nDocumentBuilder db = DocumentBuilderFactory.newDefaultNSInstance().newDocumentBuilder(); \r\n\r\n\/\/ before java 13\r\nDocumentBuilderFactory dbf = DocumentBuilderFactory.newDefaultInstance(); \r\ndbf.setNamespaceAware(true); \r\nDocumentBuilder db = dbf.newDocumentBuilder();\r\n<\/code><\/pre>\n<h2>\u7ed3\u8bba\u4e3a<\/h2>\n<p>\u770b\u8d77\u6765\uff0cJava\u6bcf\u516d\u4e2a\u6708\u53d1\u5e03\u4e00\u6b21\u7684\u6a21\u5f0f\u4e00\u76f4\u8868\u73b0\u826f\u597d\u3002\u867d\u7136\u6ca1\u6709\u592a\u591a\u4e13\u95e8\u9488\u5bf9\u5f00\u53d1\u8005\u7684\u529f\u80fd\uff0c\u4f46\u603b\u4f53\u800c\u8a00\uff0c\u8fd9\u662f\u4e00\u4e2a\u5f88\u68d2\u7684\u7248\u672c\u3002\u770b\u5230\u5927\u5bb6\u671f\u5f85\u5df2\u4e45\u7684\u6587\u672c\u5757\u5b57\u7b26\u4e32\u652f\u6301\u786e\u5b9e\u662f\u4e00\u4ef6\u597d\u4e8b\u3002<\/p>\n<h2>\u53c2\u8003\u6587\u732e<\/h2>\n<ul class=\"post-ul\">\n<li>JDK 13 Release Notes<\/li>\n<li>OpenJDK 13 Download Page<\/li>\n<li>Text Blocks Examples<\/li>\n<li>Eclipse.org Java 13 Examples<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Java 13 \u57282019\u5e749\u670817\u65e5\u53d1\u5e03\uff0c\u53ef\u7528\u4e8e\u751f\u4ea7\u73af\u5883\u3002\u7531\u4e8e6\u4e2a\u6708\u7684\u53d1\u5e03\u5468\u671f\uff0cJava 13\u4e2d\u5e76\u6ca1\u6709\u5f88\u591a\u9488 [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-50681","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - 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