{"id":761,"date":"2022-10-07T18:32:26","date_gmt":"2022-10-07T10:32:26","guid":{"rendered":"https:\/\/qaqaq.top\/?p=761"},"modified":"2022-11-27T12:39:54","modified_gmt":"2022-11-27T04:39:54","slug":"%e9%9d%a2%e5%90%91%e5%af%b9%e8%b1%a1%e4%b8%ad-%e5%8c%85%e8%a3%85%e7%b1%bb%e5%b8%b8%e8%a7%81%e9%9d%a2%e8%af%95%e9%a2%98","status":"publish","type":"post","link":"https:\/\/qaqaq.top\/?p=761","title":{"rendered":"\u9762\u5411\u5bf9\u8c61(\u4e2d)-\u5305\u88c5\u7c7b\u5e38\u89c1\u9762\u8bd5\u9898"},"content":{"rendered":"\n<pre class=\"wp-block-code\"><code>package top.qaqaq.java.P309;\r\n\r\nimport org.junit.Test;\r\n\r\n\/*\r\n * \u5173\u4e8e\u5305\u88c5\u7c7b\u4f7f\u7528\u7684\u9762\u8bd5\u9898\r\n * \r\n * \r\n * \r\n * \r\n * \r\n * \r\n * \r\n * \r\n * \r\n * \r\n *\/\r\npublic class InterviewTest {\r\n\r\n\t@Test\r\n\tpublic void test1() {\r\n\t\tObject o1 = true ? new Integer(1) : new Double(2.0);\r\n\t\tSystem.out.println(o1);\/\/1.0\r\n\t}\r\n\r\n\t@Test\r\n\tpublic void test2() {\r\n\t\tObject o2;\r\n\t\tif (true)\r\n\t\t\to2 = new Integer(1);\r\n\t\telse\r\n\t\t\to2 = new Double(2.0);\r\n\t\tSystem.out.println(o2);\/\/1\r\n\t}\r\n\t\r\n\t@Test\r\n\tpublic void test3() {\r\n\t\tInteger i = new Integer(1);\r\n\t\tInteger j = new Integer(1);\r\n\t\tSystem.out.println(i == j);\/\/false\r\n\t\t\r\n\t\t\/\/Integer\u5185\u90e8\u5b9a\u4e49\u4e86IntegerCache\u7ed3\u6784\uff0cIntegerCache\u4e2d\u5b9a\u4e49\u4e86Integer&#91;],\r\n\t\t\/\/\u4fdd\u5b58\u4e86\u4ece-128~127\u8303\u56f4\u7684\u6574\u6570\u3002\u5982\u679c\u6211\u4eec\u4f7f\u7528\u81ea\u52a8\u88c5\u7bb1\u7684\u65b9\u5f0f\uff0c\u7ed9Integer\u8d4b\u503c\u7684\u8303\u56f4\u5728\r\n\t\t\/\/-128~127\u8303\u56f4\u5185\u65f6\uff0c\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff0c\u4e0d\u7528\u518d\u53bbnew\u4e86\u3002\r\n\t\t\r\n\t\tInteger m = 1;\r\n\t\tInteger n = 1;\r\n\t\tSystem.out.println(m == n);\/\/true\r\n\t\tInteger x = 128;\/\/\u76f8\u5f53\u4e8enew\u4e86\u4e00\u4e2aInteger\u5bf9\u8c61\r\n\t\tInteger y = 128;\/\/\u76f8\u5f53\u4e8enew\u4e86\u4e00\u4e2aInteger\u5bf9\u8c61\r\n\t\tSystem.out.println(x == y);\/\/false\r\n\t\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":[8],"tags":[46],"class_list":["post-761","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\/761"}],"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=761"}],"version-history":[{"count":1,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/761\/revisions"}],"predecessor-version":[{"id":762,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/761\/revisions\/762"}],"wp:attachment":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=761"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=761"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=761"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}