{"id":202947,"date":"2025-05-22T08:03:03","date_gmt":"2025-05-22T00:03:03","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202947\/"},"modified":"2025-05-22T08:03:03","modified_gmt":"2025-05-22T00:03:03","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8-java-%e4%b8%ad%e5%ae%9a%e4%b9%89%e9%87%8d%e8%bd%bd%e6%96%b9%e6%b3%95%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202947\/","title":{"rendered":"\u5982\u4f55\u5728 Java \u4e2d\u5b9a\u4e49\u91cd\u8f7d\u65b9\u6cd5\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u5982\u4f55\u5728 Java \u4e2d\u5b9a\u4e49\u91cd\u8f7d\u65b9\u6cd5\uff1f<\/h1>\n<p>\u6700\u8fd1\u53d1\u73b0\u4e0d\u5c11\u5c0f\u4f19\u4f34\u90fd\u5bf9<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u5f88\u611f\u5174\u8da3\uff0c\u6240\u4ee5\u4eca\u5929\u7ee7\u7eed\u7ed9\u5927\u5bb6\u4ecb\u7ecd<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u76f8\u5173\u7684\u77e5\u8bc6\uff0c\u672c\u6587<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a\u5982\u4f55\u5728 Java \u4e2d\u5b9a\u4e49\u91cd\u8f7d\u65b9\u6cd5\uff1f\u300b<\/span>\u4e3b\u8981\u5185\u5bb9\u6d89\u53ca\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff01\u5f53\u7136\u5982\u679c\u9605\u8bfb\u672c\u6587\u65f6\u5b58\u5728\u4e0d\u540c\u60f3\u6cd5\uff0c\u53ef\u4ee5\u5728\u8bc4\u8bba\u4e2d\u8868\u8fbe\uff0c\u4f46\u662f\u8bf7\u52ff\u4f7f\u7528\u8fc7\u6fc0\u7684\u63aa\u8f9e~<\/p>\n<p>Java \u4e2d\uff0c\u91cd\u8f7d\u65b9\u6cd5\u662f\u6307\u540c\u540d\u65b9\u6cd5\u62e5\u6709\u4e0d\u540c\u7684\u53c2\u6570\u5217\u8868\u3002\u5b83\u4eec\u7528\u4e8e\u6267\u884c\u4e0d\u540c\u8f93\u5165\u4f46\u7c7b\u4f3c\u64cd\u4f5c\uff0c\u6216\u5411\u73b0\u6709\u7c7b\u6dfb\u52a0\u529f\u80fd\u3002\u8bed\u6cd5\u4e3a\uff1aaccess_modifier return_type method_name(parameter1_type parameter1, parameter2_type parameter2, &#8230;)\uff0c\u5176\u4e2d\u53c2\u6570\u5217\u8868\u5fc5\u987b\u4e0d\u540c\u3002\u5b9e\u6218\u6848\u4f8b\uff1aCalculator \u7c7b\u4e2d\u91cd\u8f7d\u4e86 add() \u65b9\u6cd5\uff0c\u4e00\u4e2a\u63a5\u53d7 int \u53c2\u6570\uff0c\u4e00\u4e2a\u63a5\u53d7 double \u53c2\u6570\uff0c\u6839\u636e\u53c2\u6570\u7c7b\u578b\u81ea\u52a8\u8c03\u7528\u76f8\u5e94\u65b9\u6cd5\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241027\/1730003126671dc0b6e7b04.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u5982\u4f55\u5728 Java \u4e2d\u5b9a\u4e49\u91cd\u8f7d\u65b9\u6cd5\uff1f<\/strong><\/p>\n<p><strong>\u91cd\u8f7d\u65b9\u6cd5<\/strong>\u5141\u8bb8\u60a8\u521b\u5efa\u540c\u540d\u7684\u65b9\u6cd5\uff0c\u4f46\u5177\u6709\u4e0d\u540c\u7684\u53c2\u6570\u5217\u8868\u3002\u8fd9\u5728\u4ee5\u4e0b\u60c5\u51b5\u4e0b\u975e\u5e38\u6709\u7528\uff1a<\/p>\n<ul>\n<li>\u5f53\u60a8\u5e0c\u671b\u6267\u884c\u5177\u6709\u4e0d\u540c\u8f93\u5165\u7684\u7c7b\u4f3c\u64cd\u4f5c\u65f6\u3002<\/li>\n<li>\u5f53\u60a8\u9700\u8981\u5411\u73b0\u6709\u7c7b\u6dfb\u52a0\u65b0\u529f\u80fd\u800c\u4e0d\u7834\u574f\u5411\u540e\u517c\u5bb9\u6027\u65f6\u3002<\/li>\n<\/ul>\n<p><strong>\u8bed\u6cd5\uff1a<\/strong><\/p>\n<p><code>access_modifier return_type method_name(parameter1_type parameter1, parameter2_type parameter2, ...)<\/code><\/p>\n<p><strong>\u5176\u4e2d\uff1a<\/strong><\/p>\n<ul>\n<li><code>access_modifier<\/code> \u6307\u5b9a\u65b9\u6cd5\u7684\u8bbf\u95ee\u7ea7\u522b\uff08\u4f8b\u5982\uff0c<code>public<\/code>\u3001<code>private<\/code>\uff09\u3002<\/li>\n<li><code>return_type<\/code> \u6307\u5b9a\u65b9\u6cd5\u8fd4\u56de\u7684\u7c7b\u578b\uff0c\u5982\u679c\u65b9\u6cd5\u4e0d\u8fd4\u56de\u4efb\u4f55\u503c\uff0c\u5219\u4e3a <code>void<\/code>\u3002<\/li>\n<li><code>method_name<\/code> \u662f\u65b9\u6cd5\u540d\u79f0\u3002<\/li>\n<li><code>parameter1_type<\/code> \u548c <code>parameter2_type<\/code> \u6307\u5b9a\u65b9\u6cd5\u53c2\u6570\u7684\u7c7b\u578b\u3002<\/li>\n<\/ul>\n<p><strong>\u6ce8\u610f\uff1a<\/strong>\u91cd\u8f7d\u65b9\u6cd5\u7684\u65b9\u6cd5\u540d\u79f0\u5fc5\u987b\u76f8\u540c\uff0c\u4f46\u53c2\u6570\u5217\u8868\u5fc5\u987b\u4e0d\u540c\u3002<\/p>\n<p><strong>\u5b9e\u6218\u6848\u4f8b\uff1a<\/strong><\/p>\n<p>\u6211\u4eec\u5b9a\u4e49\u4e00\u4e2a\u540d\u4e3a <code>Calculator<\/code> \u7684\u7c7b\uff0c\u5b83\u6709\u4e24\u4e2a\u91cd\u8f7d\u65b9\u6cd5 <code>add()<\/code>\uff0c\u4e00\u4e2a\u63a5\u53d7\u4e24\u4e2a <code>int<\/code> \u503c\uff0c\u53e6\u4e00\u4e2a\u63a5\u53d7\u4e24\u4e2a <code>double<\/code> \u503c\u3002<\/p>\n<pre>public class Calculator {\n\n    public int add(int a, int b) {\n        return a + b;\n    }\n\n    public double add(double a, double b) {\n        return a + b;\n    }\n\n    public static void main(String[] args) {\n        Calculator calculator = new Calculator();\n        System.out.println(calculator.add(10, 20)); \/\/ \u8f93\u51fa\uff1a30\n        System.out.println(calculator.add(10.5, 20.5)); \/\/ \u8f93\u51fa\uff1a31.0\n    }\n}<\/pre>\n<p>\u5728 <code>main()<\/code> \u65b9\u6cd5\u4e2d\uff0c\u6211\u4eec\uff1a<\/p>\n<ol>\n<li>\u521b\u5efa\u4e00\u4e2a <code>Calculator<\/code> \u7c7b\u7684\u5b9e\u4f8b\u3002<\/li>\n<li>\u8c03\u7528\u7b2c\u4e00\u4e2a <code>add()<\/code> \u65b9\u6cd5\uff0c\u4f20\u9012\u4e24\u4e2a <code>int<\/code> \u53c2\u6570\u3002<\/li>\n<li>\u8c03\u7528\u7b2c\u4e8c\u4e2a <code>add()<\/code> \u65b9\u6cd5\uff0c\u4f20\u9012\u4e24\u4e2a <code>double<\/code> \u53c2\u6570\u3002<\/li>\n<\/ol>\n<p>\u6839\u636e\u4f20\u9012\u7684\u53c2\u6570\u7c7b\u578b\uff0cJava \u4f1a\u81ea\u52a8\u8c03\u7528\u76f8\u5e94\u7684\u65b9\u6cd5\u3002<\/p>\n<p><strong>\u63d0\u793a\uff1a<\/strong><\/p>\n<ul>\n<li>\u5f53\u60a8\u91cd\u8f7d\u65b9\u6cd5\u65f6\uff0c\u53c2\u6570\u7684\u987a\u5e8f\u5fc5\u987b\u76f8\u540c\u3002<\/li>\n<li>\u91cd\u8f7d\u65b9\u6cd5\u4e0d\u80fd\u5177\u6709\u76f8\u540c\u7684\u53c2\u6570\u5217\u8868\u548c\u4e0d\u540c\u7684\u8fd4\u56de\u503c\u7c7b\u578b\u3002<\/li>\n<li>\u4f7f\u7528\u91cd\u8f7d\u65b9\u6cd5\u65f6\uff0c\u8981\u5c0f\u5fc3\u53c2\u6570\u7c7b\u578b\uff0c\u4ee5\u786e\u4fdd\u8c03\u7528\u6b63\u786e\u7684\u65b9\u6cd5\u3002<\/li>\n<\/ul>\n<p>\u4eca\u5929\u5173\u4e8e\u300a\u5982\u4f55\u5728 Java \u4e2d\u5b9a\u4e49\u91cd\u8f7d\u65b9\u6cd5\uff1f\u300b\u7684\u5185\u5bb9\u5c31\u4ecb\u7ecd\u5230\u8fd9\u91cc\u4e86\uff0c\u662f\u4e0d\u662f\u5b66\u8d77\u6765\u4e00\u76ee\u4e86\u7136\uff01\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u5173\u4e8ejava,\u91cd\u8f7d\u65b9\u6cd5\u7684\u5185\u5bb9\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u5728 Java \u4e2d\u5b9a\u4e49\u91cd\u8f7d\u65b9\u6cd5&#46;&#46;&#46;<\/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-202947","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202947","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=202947"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202947\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202947"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202947"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202947"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}