{"id":454,"date":"2024-11-02T15:37:07","date_gmt":"2024-11-02T07:37:07","guid":{"rendered":"http:\/\/www.cmd137blog.top\/?p=454"},"modified":"2024-11-02T15:37:10","modified_gmt":"2024-11-02T07:37:10","slug":"java-%e5%a4%9a%e6%80%81","status":"publish","type":"post","link":"http:\/\/www.cmd137blog.top\/?p=454","title":{"rendered":"JAVA-\u591a\u6001"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">1.\u591a\u6001\uff1a<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">\u4ec0\u4e48\u662f\u591a\u6001\uff1f<\/h3>\n\n\n\n<p>\u540c\u7c7b\u578b\u7684\u5bf9\u8c61\uff0c\u8868\u73b0\u51fa\u4e0d\u540c\u7684\u5f62\u6001\uff1b<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u591a\u6001\u7684\u8868\u73b0\u5f62\u5f0f\uff1a<\/h3>\n\n\n\n<p>\u7236\u7c7b\u7c7b\u578b \u5bf9\u8c61\u540d\u79f0=\u5b50\u7c7b\u5bf9\u8c61\uff1b<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u591a\u6001\u7684\u5fc5\u8981\u6761\u4ef6\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6709\u7ee7\u627f\u5173\u7cfb\uff1b<\/li>\n\n\n\n<li>\u6709\u7236\u7c7b\u5f15\u7528\u6307\u5411\u5b50\u7c7b\u5bf9\u8c61<\/li>\n\n\n\n<li>\u6709\u65b9\u6cd5\u91cd\u5199<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u591a\u6001\u7684\u4f18\u70b9\uff1a<\/h3>\n\n\n\n<p>\u5b9a\u4e49\u65b9\u6cd5\u65f6\uff0c\u4f7f\u7528\u7236\u7c7b\u4f5c\u4e3a\u53c2\u6570\uff0c\u53ef\u4ee5\u63a5\u53d7\u6240\u6709\u5b50\u7c7b\u5bf9\u8c61\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">2.\u8c03\u7528\u6210\u5458\u7684\u7279\u70b9\uff1a<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u53d8\u91cf\u8c03\u7528\uff1a\u7f16\u8bd1\u770b\u5de6\u8fb9\uff0c\u8fd0\u884c\u4e5f\u770b\u5de6\u8fb9\u3002<\/li>\n\n\n\n<li>\u65b9\u6cd5\u8c03\u7528\uff1a\u7f16\u8bd1\u770b\u5de6\u8fb9\uff0c\u8fd0\u884c\u770b\u53f3\u8fb9\u3002<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">3.instanceof \u5173\u952e\u5b57<\/h1>\n\n\n\n<p>\u7528\u4e8e\u5224\u65ad\u53d8\u91cf\u662f\u5426\u4e3a\u6307\u5b9a\u5bf9\u8c61\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Animal a = new Cat();\n\/\/\u60f3\u8981a\u4f7f\u7528\u5b50\u7c7b\u7684\u65b9\u6cd5\uff0c\u5219\u9700\u8981\u5f3a\u5236\u7c7b\u578b\u8f6c\u6362\nif(a instanceof Dog){\n   Dog d=(Dog)a;\n   d.watchdoor();\n}else if(a instanceof Cat){\n   Cat c = (Cat)a;\n   c.catchMouse();\n}<\/code><\/pre>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>1.\u591a\u6001\uff1a \u4ec0\u4e48\u662f\u591a\u6001\uff1f \u540c\u7c7b\u578b\u7684\u5bf9\u8c61\uff0c\u8868\u73b0\u51fa\u4e0d\u540c\u7684\u5f62\u6001\uff1b \u591a\u6001\u7684\u8868\u73b0\u5f62\u5f0f\uff1a \u7236\u7c7b\u7c7b\u578b \u5bf9\u8c61\u540d\u79f0=\u5b50\u7c7b\u5bf9\u8c61\uff1b  [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[56],"tags":[25],"class_list":["post-454","post","type-post","status-publish","format-standard","hentry","category-java","tag-java"],"_links":{"self":[{"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/posts\/454","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=454"}],"version-history":[{"count":1,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/posts\/454\/revisions"}],"predecessor-version":[{"id":455,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/posts\/454\/revisions\/455"}],"wp:attachment":[{"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=454"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=454"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=454"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}