{"id":919,"date":"2022-10-14T20:15:31","date_gmt":"2022-10-14T12:15:31","guid":{"rendered":"https:\/\/qaqaq.top\/?p=919"},"modified":"2022-11-27T12:39:52","modified_gmt":"2022-11-27T04:39:52","slug":"%e9%9d%a2%e5%90%91%e5%af%b9%e8%b1%a1%e4%b8%8b-%e5%a4%8d%e4%b9%a0-3","status":"publish","type":"post","link":"https:\/\/qaqaq.top\/?p=919","title":{"rendered":"\u9762\u5411\u5bf9\u8c61(\u4e0b)-\u590d\u4e60"},"content":{"rendered":"\n<pre class=\"wp-block-code\"><code>1. abstract \u80fd\u4fee\u9970\u54ea\u4e9b\u7ed3\u6784\uff1f\u4fee\u9970\u4ee5\u540e\uff0c\u6709\u4ec0\u4e48\u7279\u70b9\uff1f\r\n\r\n\u7c7b\u3001\u65b9\u6cd5\u3002\r\n\r\n\u7c7b\u4e0d\u80fd\u5b9e\u4f8b\u5316\uff0c\u63d0\u4f9b\u5b50\u7c7b\r\n\u62bd\u8c61\u65b9\u6cd5\uff0c\u53ea\u5b9a\u4e49\u4e86\u4e00\u79cd\u529f\u80fd\u7684\u6807\u51c6\u3002\u5177\u4f53\u7684\u6267\u884c\uff0c\u9700\u8981\u5b50\u7c7b\u53bb\u5b9e\u73b0\u3002\r\n\r\n2. \u63a5\u53e3\u662f\u5426\u80fd\u7ee7\u627f\u63a5\u53e3\uff1f\u62bd\u8c61\u7c7b\u662f\u5426\u80fd\u5b9e\u73b0(implements)\u63a5\u53e3\uff1f\u62bd\u8c61\u7c7b\u662f\u5426\u80fd\u7ee7\u627f\u975e\u62bd\u8c61\u7684\u7c7b\uff1f\r\n\r\n\u80fd\uff0c\u80fd\uff0c\u80fd\r\n\r\n3. \u58f0\u660e\u62bd\u8c61\u7c7b\uff0c\u5e76\u5305\u542b\u62bd\u8c61\u65b9\u6cd5\u3002\u6d4b\u8bd5\u7c7b\u4e2d\u521b\u5efa\u4e00\u4e2a\u7ee7\u627f\u62bd\u8c61\u7c7b\u7684\u533f\u540d\u5b50\u7c7b\u7684\u5bf9\u8c61\r\n\r\nabstract class AA{\r\n\tpublic abstract void m();\r\n}\r\n\r\npublic class AATest{\r\n\tpublic static void main(String&#91;] args){\r\n\t\tAA a = new AA(){\r\n\t\t\tpublic void m(){\r\n\r\n\t\t\t}\r\n\t\t};\r\n\r\n\t\ta.m();\r\n\t}\r\n}\r\n\r\n\r\nclass Person{\r\n\tString name;\r\n\r\n\tpublic void eat(){\r\n\r\n\t}\r\n}\r\n\r\npublic class PersonTest{\r\n\tpublic static void main(String&#91;] args){\r\n\t\tPerson p = new Person(){\r\n\t\t\tpublic void eat(){\r\n\r\n\t\t\t}\r\n\t\t};\r\n\r\n\t\tp.eat();\r\n\t}\r\n}\r\n\r\n4. \u62bd\u8c61\u7c7b\u548c\u63a5\u53e3\u6709\u54ea\u4e9b\u5171\u540c\u70b9\u548c\u533a\u522b\uff1f\r\n\r\n\u76f8\u540c\u70b9\uff1a\u4e0d\u80fd\u5b9e\u4f8b\u5316\uff0c\u90fd\u53ef\u4ee5\u88ab\u7ee7\u627f\r\n\u4e0d\u540c\u70b9\uff1a\u62bd\u8c61\u7c7b\uff1a\u6709\u6784\u9020\u5668\u3002\u63a5\u53e3\uff1a\u4e0d\u80fd\u58f0\u660e\u6784\u9020\u5668\r\n\u591a\u7ee7\u627f vs \u5355\u7ee7\u627f\r\n\r\n\r\n5. \u5982\u4f55\u521b\u5efa\u9759\u6001\u6210\u5458\u5185\u90e8\u7c7b\u548c\u975e\u9759\u6001\u6210\u5458\u5185\u90e8\u7c7b\u7684\u5bf9\u8c61\uff1f\r\n\r\nPerson static Dog Bird\r\n\r\nPerson.Dog dog = new Person.Dog()\r\n\r\nPerson  p = new Person();\r\nPerson.Bird bird = p.new Bird();\r\n\r\n\r\nstatic final abstract \u7528\u6765\u4fee\u9970\u4ec0\u4e48\u7684\u6574\u7406<\/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-919","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\/919"}],"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=919"}],"version-history":[{"count":1,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/919\/revisions"}],"predecessor-version":[{"id":920,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/919\/revisions\/920"}],"wp:attachment":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=919"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=919"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=919"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}