{"id":1126,"date":"2022-10-24T22:45:21","date_gmt":"2022-10-24T14:45:21","guid":{"rendered":"https:\/\/qaqaq.top\/?p=1126"},"modified":"2022-11-27T12:39:49","modified_gmt":"2022-11-27T04:39:49","slug":"%e5%b8%b8%e7%94%a8%e7%b1%bb-idea%e4%b8%addebug%e8%b0%83%e8%af%95","status":"publish","type":"post","link":"https:\/\/qaqaq.top\/?p=1126","title":{"rendered":"\u5e38\u7528\u7c7b-IDEA\u4e2dDebug\u8c03\u8bd5"},"content":{"rendered":"\n<pre class=\"wp-block-code\"><code>package top.qaqaq.java.P479;\r\n\r\nimport org.junit.jupiter.api.Test;\r\n\r\n\/**\r\n * @author RichieZhang\r\n * @create 2022-10-23 \u4e0b\u5348 4:34\r\n *\/\r\npublic class IDEADebug {\r\n\r\n    @Test\r\n    public void testStringBuffer() {\r\n        String str = null;\r\n        StringBuffer sb = new StringBuffer();\r\n        sb.append(str);\/\/\r\n\r\n        System.out.println(sb.length());\/\/4\r\n\r\n        System.out.println(sb);\/\/\"null\"\r\n\r\n        StringBuffer sb1 = new StringBuffer(str);\/\/\u629b\u5f02\u5e38NullPointerException\r\n        System.out.println(sb1);\/\/\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-1126","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\/1126"}],"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=1126"}],"version-history":[{"count":1,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/1126\/revisions"}],"predecessor-version":[{"id":1127,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/1126\/revisions\/1127"}],"wp:attachment":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1126"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1126"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1126"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}