{"id":202936,"date":"2025-05-22T08:59:34","date_gmt":"2025-05-22T00:59:34","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202936\/"},"modified":"2025-05-22T08:59:34","modified_gmt":"2025-05-22T00:59:34","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8java%e4%b8%ad%e4%bd%bf%e7%94%a8final%e4%bf%ae%e9%a5%b0%e7%ac%a6%e5%ae%9a%e4%b9%89%e5%87%bd%e6%95%b0","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202936\/","title":{"rendered":"\u5982\u4f55\u5728Java\u4e2d\u4f7f\u7528final\u4fee\u9970\u7b26\u5b9a\u4e49\u51fd\u6570"},"content":{"rendered":"

<\/b> <\/p>\n

\u5982\u4f55\u5728Java\u4e2d\u4f7f\u7528final\u4fee\u9970\u7b26\u5b9a\u4e49\u51fd\u6570<\/h1>\n

\u5728\u6587\u7ae0\u5b9e\u6218\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u9047\u5230\u4e00\u4e9b\u8fd9\u6837\u90a3\u6837\u7684\u95ee\u9898\uff0c\u7136\u540e\u8981\u5361\u597d\u534a\u5929\uff0c\u7b49\u95ee\u9898\u89e3\u51b3\u4e86\u624d\u53d1\u73b0\u539f\u6765\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u662f\u6ca1\u6709\u638c\u63e1\u597d\u3002\u4eca\u5929\u5c31\u6574\u7406\u5206\u4eab\u300a\u5982\u4f55\u5728Java\u4e2d\u4f7f\u7528final\u4fee\u9970\u7b26\u5b9a\u4e49\u51fd\u6570\u300b\uff0c\u804a\u804a\uff0c\u5e0c\u671b\u53ef\u4ee5\u5e2e\u52a9\u5230\u6b63\u5728\u52aa\u529b\u8d5a\u94b1\u7684\u4f60\u3002<\/p>\n

\u5982\u4f55\u4f7f\u7528 final \u4fee\u9970\u7b26\u5b9a\u4e49\u51fd\u6570\uff1a\u4f7f\u7528 final \u4fee\u9970\u7b26\u540e\uff0c\u51fd\u6570\u4e0d\u80fd\u88ab\u5b50\u7c7b\u91cd\u5199\u3002\u963b\u6b62\u5b50\u7c7b\u8986\u76d6\u7236\u7c7b\u7684\u51fd\u6570\uff0c\u786e\u4fdd\u884c\u4e3a\u4e00\u81f4\u3002final \u4fee\u9970\u7b26\u8868\u793a\u51fd\u6570\u884c\u4e3a\u4e0d\u53ef\u53d8\u3002<\/p>\n

<\/p>\n

\u5982\u4f55\u5728 Java \u4e2d\u4f7f\u7528 final \u4fee\u9970\u7b26\u5b9a\u4e49\u51fd\u6570<\/strong><\/p>\n

final<\/code> \u4fee\u9970\u7b26\u662f\u4e00\u4e2a Java \u5173\u952e\u5b57\uff0c\u7528\u4e8e\u4fee\u9970\u7c7b\u3001\u65b9\u6cd5\u6216\u53d8\u91cf\u3002\u5728\u51fd\u6570\u4e0a\u4e0b\u6587\u4e2d\uff0c\u4f7f\u7528 final<\/code> \u5173\u952e\u5b57\u8868\u793a\u8be5\u51fd\u6570\u4e0d\u80fd\u88ab\u91cd\u5199\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u5b83\u963b\u6b62\u5b50\u7c7b\u8986\u76d6\u7236\u7c7b\u7684\u51fd\u6570\u3002<\/p>\n

\u8bed\u6cd5\uff1a<\/strong><\/p>\n

final void functionName() {\n    \/\/ \u51fd\u6570\u4f53\n}<\/pre>\n
\u5b9e\u6218\u6848\u4f8b\uff1a<\/strong><\/p>\n
\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u540d\u4e3a Shape<\/code> \u7684\u62bd\u8c61\u7236\u7c7b\uff0c\u5b83\u5b9a\u4e49\u4e86\u4e00\u4e2a draw()<\/code> \u51fd\u6570\u3002\u6211\u4eec\u60f3\u521b\u5efa\u4e00\u4e2a Rectangle<\/code> \u5b50\u7c7b\u6765\u7ee7\u627f Shape<\/code> \u7c7b\uff0c\u540c\u65f6\u4fdd\u6301 draw()<\/code> \u51fd\u6570\u884c\u4e3a\u7684\u4e0d\u53ef\u53d8\u6027\u3002<\/p>\n
Shape \u7c7b\uff1a<\/strong><\/p>\n
public abstract class Shape {\n\n    public final void draw() {\n        System.out.println(\"Drawing a shape...\");\n    }\n}<\/pre>\n
Rectangle \u7c7b\uff1a<\/strong><\/p>\n
public class Rectangle extends Shape {\n\n    \/\/ \u65e0\u6cd5\u91cd\u5199\u7236\u7c7b\u7684 final \u51fd\u6570\n    \/\/ public void draw() {\n    \/\/     System.out.println(\"Drawing a rectangle...\");\n    \/\/ }\n}<\/pre>\n
\u793a\u4f8b\u7528\u6cd5\uff1a<\/strong><\/p>\n
Shape shape = new Rectangle();\nshape.draw(); \/\/ \u8f93\u51fa\uff1aDrawing a shape...<\/pre>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0cRectangle<\/code> \u7c7b\u65e0\u6cd5\u8986\u76d6 Shape<\/code> \u7684 draw()<\/code> \u51fd\u6570\uff0c\u56e0\u4e3a\u8be5\u51fd\u6570\u88ab\u58f0\u660e\u4e3a final<\/code>\uff0c\u8fd9\u786e\u4fdd\u4e86\u6240\u6709\u5b50\u7c7b\u7684\u884c\u4e3a\u4e00\u81f4\u3002<\/p>\n
\u672c\u7bc7\u5173\u4e8e\u300a\u5982\u4f55\u5728Java\u4e2d\u4f7f\u7528final\u4fee\u9970\u7b26\u5b9a\u4e49\u51fd\u6570\u300b\u7684\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\u5566\uff0c\u4f46\u662f\u5b66\u65e0\u6b62\u5883\uff0c\u60f3\u8981\u4e86\u89e3\u5b66\u4e60\u66f4\u591a\u5173\u4e8e\u6587\u7ae0\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5982\u4f55\u5728Java\u4e2d\u4f7f\u7528final\u4fee...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-202936","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202936","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=202936"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202936\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202936"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202936"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202936"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}