{"id":862,"date":"2022-10-11T22:29:23","date_gmt":"2022-10-11T14:29:23","guid":{"rendered":"https:\/\/qaqaq.top\/?p=862"},"modified":"2022-11-27T12:39:54","modified_gmt":"2022-11-27T04:39:54","slug":"%e9%9d%a2%e5%90%91%e5%af%b9%e8%b1%a1%e4%b8%8b-final%e4%bf%ae%e9%a5%b0%e7%b1%bb%e5%92%8c%e6%96%b9%e6%b3%95%e3%80%81final%e4%bf%ae%e9%a5%b0%e5%b1%9e%e6%80%a7%e3%80%81final%e4%bf%ae%e9%a5%b0%e5%b1%80","status":"publish","type":"post","link":"https:\/\/qaqaq.top\/?p=862","title":{"rendered":"\u9762\u5411\u5bf9\u8c61(\u4e0b)-final\u4fee\u9970\u7c7b\u548c\u65b9\u6cd5\u3001final\u4fee\u9970\u5c5e\u6027\u3001final\u4fee\u9970\u5c40\u90e8\u53d8\u91cf"},"content":{"rendered":"\n<pre class=\"wp-block-code\"><code>package top.qaqaq.java.P334;\r\n\/*\r\n * final\uff1a\u6700\u7ec8\u7684\r\n * \r\n * 1. final\u53ef\u4ee5\u7528\u6765\u4fee\u9970\u7684\u7ed3\u6784\uff1a\u7c7b\u3001\u65b9\u6cd5\u3001\u53d8\u91cf\r\n * \r\n * 2. final \u7528\u6765\u4fee\u9970\u4e00\u4e2a\u7c7b:\u6b64\u7c7b\u4e0d\u80fd\u88ab\u5176\u4ed6\u7c7b\u6240\u7ee7\u627f\u3002\r\n * \t\t\u6bd4\u5982\uff1aString\u7c7b\u3001System\u7c7b\u3001StringBuffer\u7c7b\r\n * \r\n * 3. final \u7528\u6765\u4fee\u9970\u65b9\u6cd5\uff1a\u8868\u660e\u6b64\u65b9\u6cd5\u4e0d\u53ef\u4ee5\u88ab\u91cd\u5199\r\n * \t\t\u6bd4\u5982\uff1aObject\u7c7b\u4e2dgetClass();\r\n * \r\n * 4. final \u7528\u6765\u4fee\u9970\u53d8\u91cf\uff1a\u6b64\u65f6\u7684\"\u53d8\u91cf\"\u5c31\u79f0\u4e3a\u662f\u4e00\u4e2a\u5e38\u91cf\r\n * \t\t4.1 final\u4fee\u9970\u5c5e\u6027\uff1a\u53ef\u4ee5\u8003\u8651\u8d4b\u503c\u7684\u4f4d\u7f6e\u6709\uff1a\u663e\u5f0f\u521d\u59cb\u5316\u3001\u4ee3\u7801\u5757\u4e2d\u521d\u59cb\u5316\u3001\u6784\u9020\u5668\u4e2d\u521d\u59cb\u5316\r\n * \t\t4.2 final\u4fee\u9970\u5c40\u90e8\u53d8\u91cf\uff1a\r\n * \t\t\t\u5c24\u5176\u662f\u4f7f\u7528final\u4fee\u9970\u5f62\u53c2\u65f6\uff0c\u8868\u660e\u6b64\u5f62\u53c2\u662f\u4e00\u4e2a\u5e38\u91cf\u3002\u5f53\u6211\u4eec\u8c03\u7528\u6b64\u65b9\u6cd5\u65f6\uff0c\u7ed9\u5e38\u91cf\u5f62\u53c2\u8d4b\u4e00\u4e2a\u5b9e\u53c2\u3002\u4e00\u65e6\u8d4b\u503c\r\n * \t\t\t\u4ee5\u540e\uff0c\u5c31\u53ea\u80fd\u5728\u65b9\u6cd5\u4f53\u5185\u4f7f\u7528\u6b64\u5f62\u53c2\uff0c\u4f46\u4e0d\u80fd\u8fdb\u884c\u91cd\u65b0\u8d4b\u503c\u3002\r\n * \r\n * static final \u7528\u6765\u4fee\u9970\u5c5e\u6027\uff1a\u5168\u5c40\u5e38\u91cf\r\n * \r\n * \r\n *\/\r\npublic class FinalTest {\r\n\t\r\n\tfinal int WIDTH = 10;\r\n\tfinal int LEFT;\r\n\tfinal int RIGHT;\r\n\/\/\tfinal int DOWN;\r\n\t\r\n\t\r\n\t{\r\n\t\tLEFT = 1;\r\n\t}\r\n\t\r\n\tpublic FinalTest() {\r\n\t\tRIGHT = 2;\r\n\t}\r\n\t\r\n\tpublic FinalTest(int n) {\r\n\t\tRIGHT = n;\r\n\t}\r\n\t\r\n\/\/\tpublic void setDown(int down) {\r\n\/\/\t\tthis.DOWN = down;\r\n\/\/\t}\r\n\t\r\n\tpublic void doWidth() {\r\n\/\/\t\twidth = 20;\r\n\t}\r\n\t\r\n\tpublic void show() {\r\n\t\tfinal int NUM = 10;\/\/\u5e38\u91cf\r\n\/\/\t\tNUM += 20;\r\n\t}\r\n\t\r\n\tpublic void show(final int num) {\r\n\/\/\t\tnum = 20;\/\/\u7f16\u8bd1\u4e0d\u901a\u8fc7\r\n\t\tSystem.out.println(num);\r\n\t}\r\n\t\r\n\t\r\n\tpublic static void main(String&#91;] args) {\r\n\t\t\r\n\t\tint num = 10;\r\n\t\t\r\n\t\tnum = num + 5;\r\n\t\t\r\n\t\tFinalTest test = new FinalTest();\r\n\/\/\t\ttest.setDown(3);\r\n\t\t\r\n\t\ttest.show(10);\r\n\t}\r\n\r\n}\r\n\r\nfinal class FinalA{\r\n\t\r\n}\r\n\r\n\/\/class B extends FinalA{\r\n\/\/\t\r\n\/\/}\r\n\r\n\/\/class C extends String{\r\n\/\/\t\r\n\/\/}\r\n\r\nclass AA{\r\n\tpublic final void show() {\r\n\t\t\r\n\t}\r\n}\t\r\n\r\nclass BB extends AA{\r\n\/\/\tpublic void show() {\r\n\/\/\t\t\r\n\/\/\t}\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-862","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\/862"}],"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=862"}],"version-history":[{"count":1,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/862\/revisions"}],"predecessor-version":[{"id":863,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/862\/revisions\/863"}],"wp:attachment":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=862"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=862"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=862"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}