{"id":572,"date":"2022-09-27T22:15:23","date_gmt":"2022-09-27T14:15:23","guid":{"rendered":"https:\/\/qaqaq.top\/?p=572"},"modified":"2022-11-27T12:39:59","modified_gmt":"2022-11-27T04:39:59","slug":"%e9%9d%a2%e5%90%91%e5%af%b9%e8%b1%a1%e4%b8%8a-%e7%90%86%e8%a7%a3%e4%b8%87%e4%ba%8b%e4%b8%87%e7%89%a9%e7%9a%86%e5%af%b9%e8%b1%a1%e3%80%81%e5%af%b9%e8%b1%a1%e6%95%b0%e7%bb%84","status":"publish","type":"post","link":"https:\/\/qaqaq.top\/?p=572","title":{"rendered":"\u9762\u5411\u5bf9\u8c61(\u4e0a)-\u7406\u89e3\u201c\u4e07\u4e8b\u4e07\u7269\u7686\u5bf9\u8c61\u201d\u3001\u5bf9\u8c61\u6570\u7ec4\u7684\u5185\u5b58\u89e3\u6790\u3001\u533f\u540d\u5bf9\u8c61\u7684\u4f7f\u7528"},"content":{"rendered":"\n<pre class=\"wp-block-code\"><code>package top.qaqaq.java.P201;\r\n\/*\r\n * \u4e00\u3001\u7406\u89e3\u201c\u4e07\u4e8b\u4e07\u7269\u7686\u5bf9\u8c61\u201d\r\n * 1. \u5728Java\u8bed\u8a00\u8303\u7574\u4e2d\uff0c\u6211\u4eec\u90fd\u5c06\u529f\u80fd\u3001\u7ed3\u6784\u7b49\u5c01\u88c5\u5230\u7c7b\u4e2d\uff0c\u901a\u8fc7\u7c7b\u7684\u5b9e\u4f8b\u5316\uff0c\u6765\u8c03\u7528\u5177\u4f53\u7684\u529f\u80fd\u7ed3\u6784\r\n * \t\t\t>Scanner,String\u7b49\r\n * \t\t\t>\u6587\u4ef6\uff1aFile\r\n * \t\t\t>\u7f51\u7edc\u8d44\u6e90\uff1aURL\r\n * 2. \u6d89\u53ca\u5230Java\u8bed\u8a00\u4e0e\u524d\u7aefHtml\u3001\u540e\u7aef\u7684\u6570\u636e\u5e93\u4ea4\u4e92\u65f6\uff0c\u524d\u540e\u7aef\u7684\u7ed3\u6784\u5728Java\u5c42\u9762\u4ea4\u4e92\u65f6\uff0c\u90fd\u4f53\u73b0\u4e3a\u7c7b\u3001\u5bf9\u8c61\u3002\r\n * \r\n * \u4e8c\u3001\u5185\u5b58\u89e3\u6790\u8bf4\u660e\r\n * 1. \u5f15\u7528\u7c7b\u578b\u7684\u53d8\u91cf\uff0c\u53ea\u53ef\u80fd\u5b58\u50a8\u4e24\u7c7b\u503c\uff1anull \u6216 \u5730\u5740\u503c\uff08\u542b\u53d8\u91cf\u7684\u7c7b\u578b\uff09\r\n * \r\n * \u4e09\u3001\u533f\u540d\u5bf9\u8c61\u7684\u4f7f\u7528\r\n * 1. \u7406\u89e3\uff1a\u6211\u4eec\u521b\u5efa\u7684\u5bf9\u8c61\uff0c\u6ca1\u6709\u663e\u5f0f\u7684\u8d4b\u7ed9\u4e00\u4e2a\u53d8\u91cf\u540d\u3002\u5373\u4e3a\u533f\u540d\u5bf9\u8c61\r\n * 2. \u7279\u5f81\uff1a\u533f\u540d\u5bf9\u8c61\u53ea\u80fd\u8c03\u7528\u4e00\u6b21\u3002\r\n * 3. \u4f7f\u7528\uff1a\u5982\u4e0b\r\n * \r\n *\/\r\npublic class InstanceTest {\r\n\tpublic static void main(String&#91;] args) {\r\n\t\tPhone p = new Phone();\r\n\/\/\t\tp = null;\r\n\t\tSystem.out.println(p);\r\n\t\t\r\n\t\tp.sendEmail();\r\n\t\tp.playGame();\r\n\t\t\r\n\t\t\r\n\t\t\/\/\u533f\u540d\u5bf9\u8c61\r\n\/\/\t\tnew Phone().sendEmail();\r\n\/\/\t\tnew Phone().playGame();\r\n\t\t\r\n\t\tnew Phone().price = 1999;\r\n\t\tnew Phone().showPrice();\/\/0.0\r\n\t\t\r\n\t\t\/\/************************************************\r\n\t\tPhoneMall mall = new PhoneMall();\r\n\/\/\t\tmall.show(p);\r\n\t\t\/\/\u533f\u540d\u5bf9\u8c61\u7684\u4f7f\u7528\r\n\t\tmall.show(new Phone());\r\n\t}\r\n\r\n}\r\n\r\nclass PhoneMall{\r\n\t\r\n\tpublic void show(Phone phone) {\r\n\t\tphone.sendEmail();\r\n\t\tphone.playGame();\r\n\t}\r\n}\r\n\r\nclass Phone{\r\n\tdouble price;\/\/\u4ef7\u683c\r\n\t\r\n\tpublic void sendEmail() {\r\n\t\tSystem.out.println(\"\u53d1\u9001\u90ae\u4ef6\");\r\n\t}\r\n\t\r\n\tpublic void playGame() {\r\n\t\tSystem.out.println(\"\u73a9\u6e38\u620f\");\r\n\t}\r\n\t\r\n\tpublic void showPrice() {\r\n\t\tSystem.out.println(\"\u624b\u673a\u4ef7\u683c\u4e3a\uff1a\" + price);\r\n\t}\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-572","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\/572"}],"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=572"}],"version-history":[{"count":1,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/572\/revisions"}],"predecessor-version":[{"id":573,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/572\/revisions\/573"}],"wp:attachment":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=572"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=572"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=572"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}