{"id":1102,"date":"2022-10-23T22:51:53","date_gmt":"2022-10-23T14:51:53","guid":{"rendered":"https:\/\/qaqaq.top\/?p=1102"},"modified":"2022-11-27T12:39:50","modified_gmt":"2022-11-27T04:39:50","slug":"%e5%b8%b8%e7%94%a8%e7%b1%bb-system%e7%b1%bb%e4%b8%ad%e8%8e%b7%e5%8f%96%e6%97%b6%e9%97%b4%e6%88%b3%e7%9a%84%e6%96%b9%e6%b3%95%e3%80%81java%e4%b8%ad%e4%b8%a4%e4%b8%aadate%e7%b1%bb%e7%9a%84%e4%bd%bf","status":"publish","type":"post","link":"https:\/\/qaqaq.top\/?p=1102","title":{"rendered":"\u5e38\u7528\u7c7b-System\u7c7b\u4e2d\u83b7\u53d6\u65f6\u95f4\u6233\u7684\u65b9\u6cd5\u3001Java\u4e2d\u4e24\u4e2aDate\u7c7b\u7684\u4f7f\u7528"},"content":{"rendered":"\n<pre class=\"wp-block-code\"><code>package top.qaqaq.java.P469;\r\n\r\nimport org.junit.jupiter.api.Test;\r\n\r\nimport java.util.Date;\r\n\r\n\/**\r\n * JDK 8 \u4e4b\u524d\u65e5\u671f\u548c\u65f6\u95f4\u7684API\u6d4b\u8bd5\r\n *\r\n * @author RichieZhang\r\n * @create 2022-10-22 \u4e0b\u5348 9:37\r\n *\/\r\npublic class DateTimeTest {\r\n\r\n    \/*\r\n    java.util.Date\u7c7b\r\n            |---java.sql.Date\u7c7b\r\n\r\n    1.\u4e24\u4e2a\u6784\u9020\u5668\u7684\u4f7f\u7528\r\n            >\u6784\u9020\u5668\u4e00\uff1aDate()\uff1a\u521b\u5efa\u4e00\u4e2a\u5bf9\u5e94\u5f53\u524d\u65f6\u95f4\u7684Date\u5bf9\u8c61\r\n            >\u6784\u9020\u5668\u4e8c\uff1a\u521b\u5efa\u6307\u5b9a\u6beb\u79d2\u6570\u7684Date\u5bf9\u8c61\r\n    2.\u4e24\u4e2a\u65b9\u6cd5\u7684\u4f7f\u7528\r\n            >toString():\u663e\u793a\u5f53\u524d\u7684\u5e74\u3001\u6708\u3001\u65e5\u3001\u65f6\u3001\u5206\u3001\u79d2\r\n            >getTime():\u83b7\u53d6\u5f53\u524dDate\u5bf9\u8c61\u5bf9\u5e94\u7684\u6beb\u79d2\u6570\u3002\uff08\u65f6\u95f4\u6233\uff09\r\n\r\n    3.java.sql.Date\u5bf9\u5e94\u7740\u6570\u636e\u5e93\u4e2d\u7684\u65e5\u671f\u7c7b\u578b\u7684\u53d8\u91cf\r\n            >\u5982\u4f55\u5b9e\u4f8b\u5316\r\n            >\u5982\u4f55\u5c06java.util.Date\u5bf9\u8c61\u8f6c\u6362\u4e3ajava.sql.Date\u5bf9\u8c61\r\n     *\/\r\n    @Test\r\n    public void test2(){\r\n        \/\/\u6784\u9020\u5668\u4e00\uff1aDate()\uff1a\u521b\u5efa\u4e00\u4e2a\u5bf9\u5e94\u5f53\u524d\u65f6\u95f4\u7684Date\u5bf9\u8c61\r\n        Date date1 = new Date();\r\n        System.out.println(date1.toString());\/\/Sat Oct 22 21:46:58 CST 2022\r\n\r\n        System.out.println(date1.getTime());\/\/1666446562405\r\n\r\n        \/\/\u6784\u9020\u5668\u4e8c\uff1a\u521b\u5efa\u6307\u5b9a\u6beb\u79d2\u6570\u7684Date\u5bf9\u8c61\r\n        Date date2 = new Date(1666446562405L);\r\n        System.out.println(date2.toString());\r\n\r\n        \/\/\u521b\u5efajava.sql.Date\u5bf9\u8c61\r\n        java.sql.Date date3 = new java.sql.Date(231314111414L);\r\n        System.out.println(date3);\/\/1977-05-01\r\n\r\n        \/\/\u5982\u4f55\u5c06java.util.Date\u5bf9\u8c61\u8f6c\u6362\u4e3ajava.sql.Date\u5bf9\u8c61\r\n        \/\/\u60c5\u51b5\u4e00\uff1a\r\n\/\/        Date date4 = new java.sql.Date(2154141515155L);\r\n\/\/        java.sql.Date date5 = (java.sql.Date) date4;\r\n        \/\/\u60c5\u51b5\u4e8c\uff1a\r\n        Date date6 = new Date();\r\n        java.sql.Date date7 = new java.sql.Date(date6.getTime());\r\n    }\r\n\r\n    \/\/1. System\u7c7b\u4e2d\u7684currentTimeMillis()\r\n    @Test\r\n    public void test1(){\r\n        long time = System.currentTimeMillis();\r\n        \/\/\u8fd4\u56de\u5f53\u524d\u65f6\u95f4\u4e0e1970\u5e741\u67081\u65e50\u65f60\u52060\u79d2\u4e4b\u95f4\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\u7684\u65f6\u95f4\u5dee\u3002\r\n        \/\/\u79f0\u4e3a\u65f6\u95f4\u6233\r\n        System.out.println(time);\r\n\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-1102","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\/1102"}],"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=1102"}],"version-history":[{"count":1,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/1102\/revisions"}],"predecessor-version":[{"id":1103,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/1102\/revisions\/1103"}],"wp:attachment":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1102"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1102"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1102"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}