{"id":203039,"date":"2025-05-22T12:09:19","date_gmt":"2025-05-22T04:09:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/203039\/"},"modified":"2025-05-22T12:09:19","modified_gmt":"2025-05-22T04:09:19","slug":"java%e5%87%bd%e6%95%b0%e9%87%8d%e8%bd%bd%e7%9b%b8%e5%af%b9%e4%ba%8e%e5%87%bd%e6%95%b0%e5%a4%9a%e6%80%81%e7%9a%84%e4%bc%98%e5%8a%bf%e5%92%8c%e5%8a%a3%e5%8a%bf","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/203039\/","title":{"rendered":"Java\u51fd\u6570\u91cd\u8f7d\u76f8\u5bf9\u4e8e\u51fd\u6570\u591a\u6001\u7684\u4f18\u52bf\u548c\u52a3\u52bf"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>Java\u51fd\u6570\u91cd\u8f7d\u76f8\u5bf9\u4e8e\u51fd\u6570\u591a\u6001\u7684\u4f18\u52bf\u548c\u52a3\u52bf<\/h1>\n<p>\u5927\u5bb6\u597d\uff0c\u4eca\u5929\u672c\u4eba\u7ed9\u5927\u5bb6\u5e26\u6765\u6587\u7ae0<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aJava\u51fd\u6570\u91cd\u8f7d\u76f8\u5bf9\u4e8e\u51fd\u6570\u591a\u6001\u7684\u4f18\u52bf\u548c\u52a3\u52bf\u300b<\/span>\uff0c\u6587\u4e2d\u5185\u5bb9\u4e3b\u8981\u6d89\u53ca\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span><\/span>\uff0c\u5982\u679c\u4f60\u5bf9<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u65b9\u9762\u7684\u77e5\u8bc6\u70b9\u611f\u5174\u8da3\uff0c\u90a3\u5c31\u8bf7\u5404\u4f4d\u670b\u53cb\u7ee7\u7eed\u770b\u4e0b\u53bb\u5427~\u5e0c\u671b\u80fd\u771f\u6b63\u5e2e\u5230\u4f60\u4eec\uff0c\u8c22\u8c22\uff01<\/p>\n<p>\u51fd\u6570\u91cd\u8f7d\u7528\u4e8e\u5728\u540c\u4e00\u7c7b\u4e2d\u521b\u5efa\u5177\u6709\u4e0d\u540c\u53c2\u6570\u5217\u8868\u7684\u540c\u540d\u65b9\u6cd5\uff0c\u63d0\u9ad8\u4ee3\u7801\u53ef\u8bfb\u6027\u548c\u7075\u6d3b\u6027\uff0c\u4f46\u53ef\u80fd\u5bfc\u81f4\u51b2\u7a81\u3002\u51fd\u6570\u591a\u6001\u901a\u8fc7\u8986\u76d6\u7236\u7c7b\u65b9\u6cd5\u5b9e\u73b0\u62bd\u8c61\uff0c\u589e\u5f3a\u7075\u6d3b\u6027\uff0c\u4f46\u53ef\u80fd\u5bfc\u81f4\u5c42\u6b21\u7ed3\u6784\u590d\u6742\u548c\u4e0d\u5fc5\u8981\u7684\u5b9e\u73b0\u3002\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u51fd\u6570\u91cd\u8f7d\u66f4\u7b80\u6d01\uff0c\u51fd\u6570\u591a\u6001\u66f4\u62bd\u8c61\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241027\/1730025337671e17790353b.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>Java \u4e2d\u51fd\u6570\u91cd\u8f7d\u4e0e\u51fd\u6570\u591a\u6001\u7684\u4f18\u52a3\u5bf9\u6bd4<\/strong><\/p>\n<p><strong>\u51fd\u6570\u91cd\u8f7d<\/strong><\/p>\n<ul>\n<li><strong>\u5b9a\u4e49\uff1a<\/strong>\u5728\u540c\u4e00\u4e2a\u7c7b\u4e2d\uff0c\u5b9a\u4e49\u5177\u6709\u76f8\u540c\u540d\u79f0\u4f46\u4e0d\u540c\u53c2\u6570\u5217\u8868\u7684\u591a\u4e2a\u65b9\u6cd5\u3002<\/li>\n<li>\n<p><strong>\u4f18\u70b9\uff1a<\/strong><\/p>\n<ul>\n<li>\u63d0\u9ad8\u4ee3\u7801\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\uff0c\u901a\u8fc7\u4f7f\u7528\u4e0d\u540c\u7684\u53c2\u6570\u5217\u8868\u6765\u533a\u5206\u4e0d\u540c\u529f\u80fd\u3002<\/li>\n<li>\u5141\u8bb8\u5411\u5df2\u5b58\u5728\u7684\u7c7b\u4e2d\u8f7b\u677e\u6dfb\u52a0\u65b0\u529f\u80fd\uff0c\u65e0\u9700\u4fee\u6539\u73b0\u6709\u7684\u4ee3\u7801\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p><strong>\u7f3a\u70b9\uff1a<\/strong><\/p>\n<ul>\n<li>\u5728\u7c7b\u5c42\u6b21\u7ed3\u6784\u4e2d\u53ef\u80fd\u4f1a\u5bfc\u81f4\u51b2\u7a81\uff0c\u5f53\u5b50\u7c7b\u548c\u7236\u7c7b\u5177\u6709\u540c\u540d\u51fd\u6570\u4e14\u53c2\u6570\u5217\u8868\u76f8\u540c\u65f6\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><strong>\u51fd\u6570\u591a\u6001<\/strong><\/p>\n<ul>\n<li><strong>\u5b9a\u4e49\uff1a<\/strong>\u5728\u7ee7\u627f\u673a\u5236\u4e0b\uff0c\u5b50\u7c7b\u8986\u76d6\u7236\u7c7b\u7684\u65b9\u6cd5\uff0c\u4ee5\u63d0\u4f9b\u8be5\u65b9\u6cd5\u7684\u4e0d\u540c\u5b9e\u73b0\u3002<\/li>\n<li>\n<p><strong>\u4f18\u70b9\uff1a<\/strong><\/p>\n<ul>\n<li>\u5b9e\u73b0\u4ee3\u7801\u7684\u66f4\u9ad8\u7ea7\u522b\u7684\u62bd\u8c61\uff0c\u5141\u8bb8\u9488\u5bf9\u63a5\u53e3\u6216\u62bd\u8c61\u7c7b\u800c\u4e0d\u662f\u5177\u4f53\u5b9e\u73b0\u8fdb\u884c\u7f16\u7a0b\u3002<\/li>\n<li>\u63d0\u9ad8\u4ee3\u7801\u7684\u7075\u6d3b\u6027\uff0c\u53ef\u4ee5\u5728\u8fd0\u884c\u65f6\u51b3\u5b9a\u8c03\u7528\u54ea\u4e2a\u5b9e\u73b0\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p><strong>\u7f3a\u70b9\uff1a<\/strong><\/p>\n<ul>\n<li>\u53ef\u80fd\u5bfc\u81f4\u7c7b\u7684\u5c42\u6b21\u7ed3\u6784\u590d\u6742\uff0c\u96be\u4ee5\u7ef4\u62a4\u3002<\/li>\n<li>\u8981\u6c42\u5b50\u7c7b\u63d0\u4f9b\u7236\u7c7b\u65b9\u6cd5\u7684\u6240\u6709\u5b9e\u73b0\uff0c\u5373\u4f7f\u5b50\u7c7b\u4e0d\u9700\u8981\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><strong>\u5b9e\u6218\u6848\u4f8b\uff1a<\/strong><\/p>\n<p>\u5047\u8bbe\u6709\u4e00\u4e2a <code>AreaCalculator<\/code> \u7c7b\uff0c\u5b83\u8ba1\u7b97\u4e0d\u540c\u5f62\u72b6\u7684\u9762\u79ef\u3002<\/p>\n<pre>public class AreaCalculator {\n\n    public double calculateArea(Rectangle rectangle) {\n        return rectangle.getWidth() * rectangle.getHeight();\n    }\n\n    public double calculateArea(Circle circle) {\n        return Math.PI * circle.getRadius() * circle.getRadius();\n    }\n\n    public double calculateArea(Triangle triangle) {\n        return 0.5 * triangle.getBase() * triangle.getHeight();\n    }\n}<\/pre>\n<p><strong>\u51fd\u6570\u91cd\u8f7d\u4f18\u52bf\uff1a<\/strong><\/p>\n<ul>\n<li>\u53ef\u4ee5\u6839\u636e\u5f62\u72b6\u7c7b\u578b\u76f4\u63a5\u8c03\u7528\u76f8\u5e94\u7684\u65b9\u6cd5\uff0c\u4ee3\u7801\u66f4\u7b80\u6d01\u6613\u61c2\u3002<\/li>\n<\/ul>\n<pre>double area = areaCalculator.calculateArea(rectangle); \/\/ \u77e9\u5f62\ndouble area = areaCalculator.calculateArea(circle); \/\/ \u5706\ndouble area = areaCalculator.calculateArea(triangle); \/\/ \u4e09\u89d2\u5f62<\/pre>\n<p><strong>\u51fd\u6570\u591a\u6001\u4f18\u52bf\uff1a<\/strong><\/p>\n<ul>\n<li>\u53ef\u4ee5\u4f7f\u7528\u901a\u7528\u63a5\u53e3 <code>Shape<\/code> \u6765\u5904\u7406\u4e0d\u540c\u7c7b\u578b\u7684\u5f62\u72b6\uff0c\u4ee3\u7801\u66f4\u62bd\u8c61\u3002<\/li>\n<\/ul>\n<pre>public interface Shape {\n    double getArea();\n}\n\npublic class AreaCalculator {\n    public double calculateArea(Shape shape) {\n        return shape.getArea();\n    }\n}\n\npublic class Rectangle implements Shape {\n    @Override\n    public double getArea() {\n        return getWidth() * getHeight();\n    }\n}\n\npublic class Circle implements Shape {\n    @Override\n    public double getArea() {\n        return Math.PI * getRadius() * getRadius();\n    }\n}\n\npublic class Triangle implements Shape {\n    @Override\n    public double getArea() {\n        return 0.5 * getBase() * getHeight();\n    }\n}<\/pre>\n<p>\u4eca\u5929\u5173\u4e8e\u300aJava\u51fd\u6570\u91cd\u8f7d\u76f8\u5bf9\u4e8e\u51fd\u6570\u591a\u6001\u7684\u4f18\u52bf\u548c\u52a3\u52bf\u300b\u7684\u5185\u5bb9\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u7591\u95ee\u6216\u8005\u5efa\u8bae\uff0c\u53ef\u4ee5\u5728\u516c\u4f17\u53f7\u4e0b\u591a\u591a\u56de\u590d\u4ea4\u6d41\uff1b\u6587\u4e2d\u82e5\u6709\u4e0d\u6b63\u4e4b\u5904\uff0c\u4e5f\u5e0c\u671b\u56de\u590d\u7559\u8a00\u4ee5\u544a\u77e5\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java\u51fd\u6570\u91cd\u8f7d\u76f8\u5bf9\u4e8e\u51fd\u6570\u591a\u6001\u7684&#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-203039","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203039","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=203039"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203039\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=203039"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=203039"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=203039"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}