{"id":1471,"date":"2022-11-05T17:13:21","date_gmt":"2022-11-05T09:13:21","guid":{"rendered":"https:\/\/qaqaq.top\/?p=1471"},"modified":"2022-11-27T12:39:44","modified_gmt":"2022-11-27T04:39:44","slug":"java10%e6%96%b0%e7%89%b9%e6%80%a7%ef%bc%9a%e5%b1%80%e9%83%a8%e5%8f%98%e9%87%8f%e7%b1%bb%e5%9e%8b%e6%8e%a8%e6%96%ad%e3%80%81java91011%e6%96%b0%e7%89%b9%e6%80%a7%e6%96%b0%e5%a2%9e%e5%88%9b%e5%bb%ba","status":"publish","type":"post","link":"https:\/\/qaqaq.top\/?p=1471","title":{"rendered":"java10\u65b0\u7279\u6027\uff1a\u5c40\u90e8\u53d8\u91cf\u7c7b\u578b\u63a8\u65ad\u3001Java9&#038;10&#038;11\u65b0\u7279\u6027\u65b0\u589e\u521b\u5efa\u4e0d\u53ef\u53d8Java9&#038;10&#038;11\u65b0\u7279\u6027\u7684\u65b9\u6cd5\u3001"},"content":{"rendered":"\n<pre class=\"wp-block-code\"><code>package top.qaqaq.java.P708;\r\n\r\nimport org.junit.jupiter.api.Test;\r\n\r\nimport java.io.BufferedReader;\r\nimport java.io.InputStreamReader;\r\nimport java.net.URL;\r\nimport java.util.ArrayList;\r\nimport java.util.List;\r\n\r\n\/**\r\n * @author RichieZhang\r\n * @create 2022-11-05 \u4e0b\u5348 3:02\r\n *\/\r\npublic class Java10Test {\r\n\r\n    \/*\r\n    java10\u65b0\u7279\u6027\u4e00\uff1a\u5c40\u90e8\u53d8\u91cf\u7684\u7c7b\u578b\u63a8\u65ad\r\n     *\/\r\n    @Test\r\n    public void test1(){\r\n        \/\/1. \u58f0\u660e\u53d8\u91cf\u65f6\uff0c\u6839\u636e\u6240\u8d4b\u7684\u503c\uff0c\u63a8\u65ad\u53d8\u91cf\u7c7b\u578b\r\n        var num = 10;\r\n\r\n        var list = new ArrayList&lt;Integer>();\r\n        list.add(123);\r\n\r\n        \/\/2. \u904d\u5386\u64cd\u4f5c\r\n        for (var i : list){\r\n            System.out.println(i);\r\n            System.out.println(i.getClass());\r\n        }\r\n\r\n        \/\/3. \u666e\u901a\u7684\u904d\u5386\u64cd\u4f5c\r\n        for (var i = 0; i &lt; 100; i++) {\r\n            System.out.println(i);\r\n        }\r\n    }\r\n\r\n    @Test\r\n    public void test2(){\r\n        \/\/1. \u5c40\u90e8\u53d8\u91cf\u4e0d\u8d4b\u503c\uff0c\u5c31\u4e0d\u80fd\u5b9e\u73b0\u7c7b\u578b\u7684\u63a8\u65ad\r\n\/\/        var num;\r\n\r\n        \/\/2. lambda\u8868\u8fbe\u5f0f\u4e2d\uff0c\u5de6\u8fb9\u7684\u51fd\u6570\u5f0f\u63a5\u53e3\u4e0d\u80fd\u58f0\u660e\u4e3avar\r\n\/\/        Supplier&lt;Double> sup = () -> Math.random();\r\n\r\n\/\/        var sup = () -> Math.random();\r\n\r\n        \/\/3. \u65b9\u6cd5\u5f15\u7528\u4e2d\uff0c\u5de6\u8fb9\u7684\u51fd\u6570\u5f0f\u63a5\u53e3\u4e0d\u80fd\u58f0\u660e\u4e3avar\r\n\/\/        Consumer&lt;String> con = System.out::println;\r\n\r\n\/\/        var con = System.out::println;\r\n\r\n        \/\/4. \u6570\u7ec4\u7684\u9759\u6001\u521d\u59cb\u5316\u4e2d\uff0c\u6ce8\u610f\u5982\u4e0b\u7684\u60c5\u51b5\u4e5f\u4e0d\u53ef\u4ee5\r\n        int&#91;] arr = {1,2,3,4};\r\n\r\n\/\/        var arr = {1,2,3,4};\r\n\r\n    }\r\n\r\n    @Test\r\n    public void test3(){\r\n\/\/        \u60c5\u51b51\uff1a\u6ca1\u6709\u521d\u59cb\u5316\u7684\u5c40\u90e8\u53d8\u91cf\u58f0\u660e\r\n\/\/        var s = null;\r\n\r\n\/\/        \u60c5\u51b56\uff1acatch\u5757\r\n\/\/        try {\r\n\/\/\r\n\/\/        }catch (var e){\r\n\/\/            e.printStackTrace();\r\n\/\/        }\r\n\r\n    }\r\n\r\n    \/\/\u60c5\u51b52\uff1a\u65b9\u6cd5\u7684\u8fd4\u56de\u7c7b\u578b\r\n\/\/    public var method1(){\r\n\/\/\r\n\/\/        return 0;\r\n\/\/    }\r\n\r\n    \/\/\u60c5\u51b53\uff1a\u65b9\u6cd5\u7684\u53c2\u6570\u7c7b\u578b\r\n\/\/    public void method2(var num){\r\n\/\/\r\n\/\/    }\r\n\r\n    \/\/\u60c5\u51b54\uff1a\u6784\u9020\u5668\u7684\u53c2\u6570\u7c7b\u578b\r\n\/\/    public Java10Test(var i){\r\n\/\/\r\n\/\/    }\r\n\r\n    \/\/\u60c5\u51b55\uff1a\u5c5e\u6027\r\n\/\/    var num;\r\n\r\n    @Test\r\n    public void test4(){\r\n        try {\r\n            var url = new URL(\"http:\/\/www.qaqaq.top\");\r\n            var connection = url.openConnection();\r\n            var reader = new BufferedReader(\r\n                    new InputStreamReader(connection.getInputStream()));\r\n        } catch (Exception e) {\r\n            e.printStackTrace();\r\n        }\r\n    }\r\n\r\n    \/\/java10\u7684\u65b0\u7279\u6027\u4e8c\uff1a\u96c6\u5408\u4e2d\u65b0\u589e\u7684copyOf(), \u7528\u4e8e\u521b\u5efa\u4e00\u4e2a\u53ea\u8bfb\u7684\u96c6\u5408\r\n    @Test\r\n    public void test5(){\r\n        \/\/\u793a\u4f8b1\uff1a\r\n        var list1 = List.of(\"Java\", \"Python\", \"C\");\r\n        var copy1 = List.copyOf(list1);\r\n        System.out.println(list1 == copy1); \/\/ true\r\n        \/\/\u793a\u4f8b2\uff1a\r\n        var list2 = new ArrayList&lt;String>();\r\n        list2.add(\"aaa\");\r\n        var copy2 = List.copyOf(list2);\r\n        System.out.println(list2 == copy2); \/\/ false\r\n        \/\/\u793a\u4f8b1\u548c2\u4ee3\u7801\u57fa\u672c\u4e00\u81f4\uff0c\u4e3a\u4ec0\u4e48\u4e00\u4e2a\u4e3atrue,\u4e00\u4e2a\u4e3afalse?\r\n        \/\/\u7ed3\u8bba\uff1acopyOf(Xxx coll):\u5982\u679c\u53c2\u6570coll\u672c\u8eab\u5c31\u662f\u4e00\u4e2a\u53ea\u8bfb\u96c6\u5408\uff0c\u5219copyOf\u8fd4\u56de\u503c\u5373\u4e3a\u5f53\u524d\u7684coll\r\n        \/\/\u5982\u679c\u53c2\u6570coll\u4e0d\u662f\u4e00\u4e2a\u53ea\u8bfb\u96c6\u5408\uff0c\u5219copyOf()\u8fd4\u56de\u4e00\u4e2a\u65b0\u7684\u96c6\u5408\uff0c\u8fd9\u4e2a\u96c6\u5408\u662f\u53ea\u8bfb\u7684\u3002\r\n    }\r\n}\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[46],"class_list":["post-1471","post","type-post","status-publish","format-standard","hentry","category-java-code","tag-java"],"_links":{"self":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/1471"}],"collection":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1471"}],"version-history":[{"count":1,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/1471\/revisions"}],"predecessor-version":[{"id":1472,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/1471\/revisions\/1472"}],"wp:attachment":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1471"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1471"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1471"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}