{"id":872,"date":"2022-10-12T22:55:45","date_gmt":"2022-10-12T14:55:45","guid":{"rendered":"https:\/\/qaqaq.top\/?p=872"},"modified":"2022-11-27T12:39:53","modified_gmt":"2022-11-27T04:39:53","slug":"%e9%9d%a2%e5%90%91%e5%af%b9%e8%b1%a1%e4%b8%8b-%e5%a4%8d%e4%b9%a0%ef%bc%9a%e5%8d%95%e4%be%8b%e6%a8%a1%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/qaqaq.top\/?p=872","title":{"rendered":"\u9762\u5411\u5bf9\u8c61(\u4e0b)-\u590d\u4e60\uff1a\u5355\u4f8b\u6a21\u5f0f"},"content":{"rendered":"\n<pre class=\"wp-block-code\"><code>package top.qaqaq.java.P340;\r\n\r\npublic class SingletonTest {\r\n\r\n\tpublic static void main(String&#91;] args) {\r\n\t\t\r\n\t\tBank bank1 = Bank.instance;\r\n\t\t\r\n\/\/\t\tBank.instance = null;\r\n\t\tBank bank2 = Bank.instance;\r\n\t\t\r\n\t\t\r\n\t\tSystem.out.println(bank1 == bank2);\r\n\t}\r\n}\r\n\r\nclass Bank{\r\n\r\n\tprivate Bank() {\r\n\t\t\r\n\t}\r\n\t\r\n\tpublic static final Bank instance = new Bank();\r\n}\r\n<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>package top.qaqaq.java.P340;\r\n\/*\r\n * \u997f\u6c49\u5f0f\u5355\u4f8b\u6a21\u5f0f\u5199\u6cd5\u4e8c\uff1a\u4f7f\u7528\u4e86\u9759\u6001\u4ee3\u7801\u5757\r\n * \r\n *\/\r\npublic class SingletonTest1 {\r\n\r\n\tpublic static void main(String&#91;] args) {\r\n\t\t\r\n\t}\r\n}\r\n\r\nclass Order{\r\n\t\r\n\t\/\/1. \u79c1\u6709\u5316\u7c7b\u7684\u6784\u9020\u5668\r\n\tprivate Order() {\r\n\t\t\r\n\t}\r\n\t\r\n\t\/\/2. \u58f0\u660e\u5f53\u524d\u7c7b\u5bf9\u8c61\uff0c\u6ca1\u6709\u521d\u59cb\u5316\r\n\t\/\/4. \u6b64\u5bf9\u8c61\u4e5f\u5fc5\u987b\u58f0\u660e\u4e3astatic\u7684\r\n\tprivate static Order instance = null;\r\n\t\r\n\tstatic {\r\n\t\tinstance = new Order();\r\n\t}\r\n\t\r\n\t\/\/3. \u58f0\u660epublic\u3001static\u7684\u8fd4\u56de\u5f53\u524d\u7c7b\u5bf9\u8c61\u7684\u65b9\u6cd5\r\n\tpublic static Order getInstance() {\r\n\t\treturn instance;\r\n\t}\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":[33],"tags":[46],"class_list":["post-872","post","type-post","status-publish","format-standard","hentry","category-java-","tag-java"],"_links":{"self":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/872"}],"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=872"}],"version-history":[{"count":1,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/872\/revisions"}],"predecessor-version":[{"id":873,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/872\/revisions\/873"}],"wp:attachment":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=872"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=872"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=872"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}