{"id":731,"date":"2022-10-06T22:57:08","date_gmt":"2022-10-06T14:57:08","guid":{"rendered":"https:\/\/qaqaq.top\/?p=731"},"modified":"2022-11-27T12:39:55","modified_gmt":"2022-11-27T04:39:55","slug":"%e9%9d%a2%e5%90%91%e5%af%b9%e8%b1%a1%e4%b8%ad-%e5%a4%9a%e6%80%81%e7%bb%83%e4%b9%a0%ef%bc%9a%e8%b0%83%e7%94%a8%e6%96%b9%e6%b3%95%e5%92%8c%e5%b1%9e%e6%80%a7","status":"publish","type":"post","link":"https:\/\/qaqaq.top\/?p=731","title":{"rendered":"\u9762\u5411\u5bf9\u8c61(\u4e2d)-\u591a\u6001\u7ec3\u4e60\uff1a\u8c03\u7528\u65b9\u6cd5\u548c\u5c5e\u6027"},"content":{"rendered":"\n<pre class=\"wp-block-code\"><code>package top.qaqaq.java.P290;\r\n\/*\r\n * \u7ec3\u4e60\uff1a\r\n * 1. \u82e5\u5b50\u7c7b\u91cd\u5199\u4e86\u7236\u7c7b\u65b9\u6cd5\uff0c\u5c31\u610f\u5473\u7740\u5b50\u7c7b\u91cc\u5b9a\u4e49\u7684\u65b9\u6cd5\u5f7b\u5e95\u8986\u76d6\u4e86\u7236\u7c7b\u91cc\u7684\u540c\u540d\u65b9\u6cd5\uff0c\r\n * \u7cfb\u7edf\u5c06\u4e0d\u53ef\u80fd\u628a\u7236\u7c7b\u91cc\u7684\u65b9\u6cd5\u8f6c\u79fb\u5230\u5b50\u7c7b\u4e2d\uff1a\u7f16\u8bd1\u770b\u5de6\u8fb9\uff0c\u8fd0\u884c\u770b\u53f3\u8fb9\r\n * \r\n * 2. \u5bf9\u4e8e\u5b9e\u4f8b\u53d8\u91cf\u5219\u4e0d\u5b58\u5728\u8fd9\u6837\u7684\u73b0\u8c61\uff0c\u5373\u4f7f\u5b50\u7c7b\u91cc\u5b9a\u4e49\u4e86\u4e0e\u7236\u7c7b\u5b8c\u5168\u76f8\u540c\u7684\u5b9e\u4f8b\u53d8\u91cf\uff0c\r\n * \u8fd9\u4e2a\u5b9e\u4f8b\u53d8\u91cf\u4f9d\u7136\u4e0d\u53ef\u80fd\u8986\u76d6\u7236\u7c7b\u4e2d\u5b9a\u4e49\u7684\u5b9e\u4f8b\u53d8\u91cf\uff1a\u7f16\u8bd1\u8fd0\u884c\u90fd\u770b\u5de6\u8fb9\r\n * \r\n * \r\n * \r\n *\/\r\nclass Base {\r\n\tint count = 10;\r\n\r\n\tpublic void display() {\r\n\t\tSystem.out.println(this.count);\r\n\t}\r\n}\r\n\r\nclass Sub extends Base {\r\n\tint count = 20;\r\n\r\n\tpublic void display() {\r\n\t\tSystem.out.println(this.count);\r\n\t}\r\n}\r\n\r\npublic class FieldMethodTest {\r\n\tpublic static void main(String&#91;] args) {\r\n\t\tSub s = new Sub();\r\n\t\tSystem.out.println(s.count);\/\/20\r\n\t\ts.display();\/\/20\r\n\t\tBase b = s;\/\/\u591a\u6001\u6027\r\n\t\t\/\/==\uff1a\u5bf9\u4e8e\u5f15\u7528\u6570\u636e\u7c7b\u578b\u6765\u8bb2\uff0c\u6bd4\u8f83\u7684\u662f\u4e24\u4e2a\u5f15\u7528\u6570\u636e\u7c7b\u578b\u53d8\u91cf\u7684\u5730\u5740\u503c\u662f\u5426\u76f8\u540c\r\n\t\tSystem.out.println(b == s);\/\/true\r\n\t\tSystem.out.println(b.count);\/\/10\r\n\t\tb.display();\/\/20\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":[8],"tags":[46],"class_list":["post-731","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\/731"}],"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=731"}],"version-history":[{"count":1,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/731\/revisions"}],"predecessor-version":[{"id":732,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/731\/revisions\/732"}],"wp:attachment":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=731"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=731"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=731"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}