{"id":202690,"date":"2025-05-22T09:57:47","date_gmt":"2025-05-22T01:57:47","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202690\/"},"modified":"2025-05-22T09:57:47","modified_gmt":"2025-05-22T01:57:47","slug":"%e5%a6%82%e4%bd%95%e5%ae%9a%e4%b9%89%e5%b8%a6%e5%8f%82%e6%95%b0%e7%9a%84-java-%e5%87%bd%e6%95%b0%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202690\/","title":{"rendered":"\u5982\u4f55\u5b9a\u4e49\u5e26\u53c2\u6570\u7684 Java \u51fd\u6570\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u5982\u4f55\u5b9a\u4e49\u5e26\u53c2\u6570\u7684 Java \u51fd\u6570\uff1f<\/h1>\n<p>\u4eca\u65e5\u4e0d\u80af\u57cb\u5934\uff0c\u660e\u65e5\u4f55\u4ee5\u62ac\u5934\uff01\u6bcf\u65e5\u4e00\u53e5\u52aa\u529b\u81ea\u5df1\u7684\u8bdd\u54c8\u54c8~\u54c8\u55bd\uff0c\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u7bc7<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a\u5982\u4f55\u5b9a\u4e49\u5e26\u53c2\u6570\u7684 Java \u51fd\u6570\uff1f\u300b<\/span>\uff0c\u4e3b\u8981\u5185\u5bb9\u662f\u8bb2\u89e3<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u53ef\u4ee5\u6536\u85cf\u6216\u8005\u6709\u66f4\u597d\u7684\u5efa\u8bae\u5728\u8bc4\u8bba\u63d0\u51fa\uff0c\u6211\u90fd\u4f1a\u8ba4\u771f\u770b\u7684\uff01\u5927\u5bb6\u4e00\u8d77\u8fdb\u6b65\uff0c\u4e00\u8d77\u5b66\u4e60\uff01<\/p>\n<p>\u7b54\u6848\uff1a Java \u51fd\u6570\u53ef\u4ee5\u5e26\u53c2\u6570\uff0c\u4f20\u9012\u6570\u636e\u4ee5\u4fbf\u5904\u7406\u3002\u58f0\u660e\u51fd\u6570\uff1a\u5728\u51fd\u6570\u540d\u540e\u5305\u542b\u62ec\u53f7\uff0c\u5185\u542b\u53c2\u6570\u7c7b\u578b\u548c\u540d\u79f0\u3002\u5b9e\u73b0\u51fd\u6570\uff1a\u51fd\u6570\u4f53\u5305\u542b\u8981\u6267\u884c\u7684\u4ee3\u7801\u3002\u8c03\u7528\u51fd\u6570\uff1a\u4f7f\u7528\u4e0e\u53c2\u6570\u7c7b\u578b\u5339\u914d\u7684\u53c2\u6570\u8c03\u7528\u51fd\u6570\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729932353671cac4172441.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u5982\u4f55\u5b9a\u4e49\u5e26\u53c2\u6570\u7684 Java \u51fd\u6570<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u51fd\u6570\uff08\u4e5f\u79f0\u4e3a\u65b9\u6cd5\uff09\u53ef\u4ee5\u63a5\u6536\u53c2\u6570\uff0c\u4ece\u800c\u4f7f\u6211\u4eec\u80fd\u591f\u5411\u51fd\u6570\u4f20\u9012\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u5b9a\u4e49\u5e26\u53c2\u6570\u7684 Java \u51fd\u6570\u7684\u6b65\u9aa4\uff1a<\/p>\n<p><strong>1. \u58f0\u660e\u51fd\u6570<\/strong><\/p>\n<p>\u8981\u58f0\u660e\u5e26\u6709\u53c2\u6570\u7684\u51fd\u6570\uff0c\u60a8\u9700\u8981\u5728\u51fd\u6570\u540d\u79f0\u540e\u5305\u542b\u62ec\u53f7\uff0c\u5176\u4e2d\u5305\u542b\u53c2\u6570\u7684\u7c7b\u578b\u548c\u540d\u79f0\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>public static int sum(int a, int b) {\n    return a + b;\n}<\/pre>\n<p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c<code>sum<\/code> \u51fd\u6570\u63a5\u6536\u4e24\u4e2a int \u7c7b\u578b\u7684\u53c2\u6570\uff0c<code>a<\/code> \u548c <code>b<\/code>\u3002<\/p>\n<p><strong>2. \u5b9e\u73b0\u51fd\u6570<\/strong><\/p>\n<p>\u51fd\u6570\u4f53\u662f\u4ece\u51fd\u6570\u540d\u5927\u62ec\u53f7\u5185\u5f00\u59cb\u7684\u4ee3\u7801\u5757\u3002\u51fd\u6570\u4f53\u5305\u542b\u51fd\u6570\u8981\u6267\u884c\u7684\u4ee3\u7801\u3002\u4f8b\u5982\u4e0b\u9762\u6240\u793a\uff1a<\/p>\n<pre>public static int sum(int a, int b) {\n    return a + b;\n}<\/pre>\n<p>\u6b64\u51fd\u6570\u5c06 <code>a<\/code> \u548c <code>b<\/code> \u76f8\u52a0\u5e76\u8fd4\u56de\u7ed3\u679c\u3002<\/p>\n<p><strong>3. \u8c03\u7528\u51fd\u6570<\/strong><\/p>\n<p>\u60a8\u53ef\u4ee5\u4f7f\u7528\u4e0e\u53c2\u6570\u7c7b\u578b\u5339\u914d\u7684\u53c2\u6570\u8c03\u7528\u51fd\u6570\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>int result = sum(10, 20);<\/pre>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p>\u5047\u8bbe\u60a8\u60f3\u7f16\u5199\u4e00\u4e2a\u7a0b\u5e8f\u6765\u8ba1\u7b97\u5706\u7684\u9762\u79ef\u3002\u60a8\u53ef\u4ee5\u5982\u4e0b\u5b9a\u4e49\u5e26\u53c2\u6570\u7684\u51fd\u6570\uff1a<\/p>\n<pre>import java.lang.Math;\n\npublic class CircleArea {\n\n    public static double calculateArea(double radius) {\n        return Math.PI * radius * radius;\n    }\n\n    public static void main(String[] args) {\n        double radius = 5.0;\n        double area = calculateArea(radius);\n        System.out.println(\"\u5706\u7684\u9762\u79ef\u4e3a\uff1a\" + area);\n    }\n}<\/pre>\n<p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c<code>calculateArea<\/code> \u51fd\u6570\u63a5\u6536\u4e00\u4e2a\u53cc\u7cbe\u5ea6\uff08<code>double<\/code>\uff09\u7c7b\u578b\u7684\u53c2\u6570 <code>radius<\/code>\uff0c\u5e76\u4f7f\u7528 <code>Math.PI<\/code> \u8ba1\u7b97\u5e76\u8fd4\u56de\u5706\u7684\u9762\u79ef\u3002<code>main<\/code> \u65b9\u6cd5\u8c03\u7528 <code>calculateArea<\/code> \u51fd\u6570\u5e76\u6253\u5370\u7ed3\u679c\u3002<\/p>\n<p>\u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8e\u6587\u7ae0\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u5b9a\u4e49\u5e26\u53c2\u6570\u7684 Java \u51fd\u6570&#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-202690","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202690","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=202690"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202690\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202690"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202690"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202690"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}