{"id":202624,"date":"2025-05-22T09:11:49","date_gmt":"2025-05-22T01:11:49","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202624\/"},"modified":"2025-05-22T09:11:49","modified_gmt":"2025-05-22T01:11:49","slug":"%e5%87%bd%e6%95%b0%e5%bc%8f%e7%bc%96%e7%a8%8b%e4%b8%8e-oop-%e7%bc%96%e7%a8%8b%e5%9c%a8-java-%e5%bc%80%e5%8f%91%e4%b8%ad%e7%9a%84%e6%9c%80%e4%bd%b3%e5%ae%9e%e8%b7%b5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202624\/","title":{"rendered":"\u51fd\u6570\u5f0f\u7f16\u7a0b\u4e0e OOP \u7f16\u7a0b\u5728 Java \u5f00\u53d1\u4e2d\u7684\u6700\u4f73\u5b9e\u8df5"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u51fd\u6570\u5f0f\u7f16\u7a0b\u4e0e OOP \u7f16\u7a0b\u5728 Java \u5f00\u53d1\u4e2d\u7684\u6700\u4f73\u5b9e\u8df5<\/h1>\n<p>\u4eb2\u7231\u7684\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5982\u679c\u4f60\u70b9\u5f00\u4e86\u8fd9\u7bc7\u6587\u7ae0\uff0c\u8bf4\u660e\u4f60\u5bf9\u300a\u51fd\u6570\u5f0f\u7f16\u7a0b\u4e0e OOP \u7f16\u7a0b\u5728 Java \u5f00\u53d1\u4e2d\u7684\u6700\u4f73\u5b9e\u8df5\u300b\u5f88\u611f\u5174\u8da3\u3002\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u7ed9\u5927\u5bb6\u8be6\u7ec6\u89e3\u6790\u4e00\u4e0b\uff0c\u4e3b\u8981\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u5e0c\u671b\u6240\u6709\u8ba4\u771f\u8bfb\u5b8c\u7684\u7ae5\u978b\u4eec\uff0c\u90fd\u6709\u5b9e\u8d28\u6027\u7684\u63d0\u9ad8\u3002<\/p>\n<p>\u51fd\u6570\u5f0f\u7f16\u7a0b\u548c OOP \u7f16\u7a0b\u5728 Java \u5f00\u53d1\u4e2d\u7684\u6700\u4f73\u5b9e\u8df5\u7ed3\u5408\u4e86\u51fd\u6570\u5f0f\u7f16\u7a0b\u7684\u91cd\u7528\u6027\u548c\u65e0\u526f\u4f5c\u7528\u7279\u6027\uff0c\u4ee5\u53ca OOP \u7f16\u7a0b\u7684\u5c01\u88c5\u3001\u7ee7\u627f\u548c\u591a\u6001\u6027\u4f18\u52bf\uff1a\u4f7f\u7528 Stream API\u3001Lambda \u8868\u8fbe\u5f0f\u548c\u65b9\u6cd5\u5f15\u7528\u589e\u5f3a OOP \u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u3002\u521b\u5efa\u53ef\u91cd\u7528\u7684\u51fd\u6570\uff0c\u4fc3\u8fdb\u4ee3\u7801\u5e93\u7684\u91cd\u7528\u3002\u5229\u7528 OOP \u5c01\u88c5\u6982\u5ff5\u7ba1\u7406\u72b6\u6001\uff0c\u9632\u6b62\u7ade\u6001\u6761\u4ef6\u3002\u4f7f\u7528 OOP \u7684\u5c42\u6b21\u7ed3\u6784\u548c\u591a\u6001\u6027\u7ec4\u7ec7\u4ee3\u7801\uff0c\u5b9e\u73b0\u6e05\u6670\u7684\u7c7b\u5c42\u6b21\u7ed3\u6784\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729925149671c901d3b0cd.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u51fd\u6570\u5f0f\u7f16\u7a0b\u4e0e OOP \u7f16\u7a0b\u5728 Java \u5f00\u53d1\u4e2d\u7684\u6700\u4f73\u5b9e\u8df5<\/strong><\/p>\n<p>\u5728 Java \u5f00\u53d1\u4e2d\uff0c\u51fd\u6570\u5f0f\u7f16\u7a0b\u548c\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\uff08OOP\uff09\u662f\u4e24\u79cd\u6d41\u884c\u4e14\u4e92\u8865\u7684\u7f16\u7a0b\u8303\u4f8b\u3002\u7ed3\u5408\u4f7f\u7528\u8fd9\u4e24\u8005\u53ef\u4ee5\u5e26\u6765\u4ee3\u7801\u7684\u53ef\u91cd\u7528\u6027\u3001\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u65b9\u9762\u7684\u4f18\u52bf\u3002<\/p>\n<p><strong>\u51fd\u6570\u5f0f\u7f16\u7a0b<\/strong><\/p>\n<p>\u51fd\u6570\u5f0f\u7f16\u7a0b\u5c06\u91cd\u70b9\u653e\u5728\u521b\u5efa\u53ef\u91cd\u7528\u4e14\u65e0\u526f\u4f5c\u7528\u7684\u51fd\u6570\u3002\u5b83\u5f3a\u8c03\u4e0d\u53d8\u6027\u3001\u7eaf\u51fd\u6570\u548c\u9ad8\u9636\u51fd\u6570\u3002\u5176\u4e2d\u4e00\u4e9b\u5173\u952e\u6982\u5ff5\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u4e0d\u53d8\u6027\uff1a<\/strong> \u51fd\u6570\u5f0f\u64cd\u4f5c\u4e0d\u4f1a\u6539\u53d8\u8f93\u5165\u6570\u636e\u3002<\/li>\n<li><strong>\u7eaf\u51fd\u6570\uff1a<\/strong> \u7ed9\u5b9a\u76f8\u540c\u8f93\u5165\uff0c\u7eaf\u51fd\u6570\u603b\u662f\u8fd4\u56de\u76f8\u540c\u8f93\u51fa\u3002<\/li>\n<li><strong>\u9ad8\u9636\u51fd\u6570\uff1a<\/strong> \u8fd9\u4e9b\u51fd\u6570\u53ef\u4ee5\u63a5\u6536\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570\u6216\u8fd4\u56de\u51fd\u6570\u3002<\/li>\n<\/ul>\n<p><strong>OOP \u7f16\u7a0b<\/strong><\/p>\n<p>OOP \u7f16\u7a0b\u5c06\u91cd\u70b9\u653e\u5728\u5c01\u88c5\u3001\u7ee7\u627f\u548c\u591a\u6001\u6027\u4e0a\u3002\u5b83\u56f4\u7ed5\u5bf9\u8c61\u7684\u6982\u5ff5\u7ec4\u7ec7\u4ee3\u7801\uff0c\u5bf9\u8c61\u5c01\u88c5\u6570\u636e\u548c\u884c\u4e3a\u3002\u4e00\u4e9b\u5173\u952e\u6982\u5ff5\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u5c01\u88c5\uff1a<\/strong>\u5c06\u6570\u636e\u548c\u65b9\u6cd5\u7ec4\u7ec7\u6210\u7c7b\u3002<\/li>\n<li><strong>\u7ee7\u627f\uff1a<\/strong> \u521b\u5efa\u65b0\u7684\u7c7b\uff08\u5b50\u7c7b\uff09\uff0c\u8be5\u7c7b\u7ee7\u627f\u7236\u7c7b\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u3002<\/li>\n<li><strong>\u591a\u6001\u6027\uff1a<\/strong>\u5141\u8bb8\u5b50\u7c7b\u4ee5\u4e0d\u540c\u7684\u65b9\u5f0f\u5b9e\u73b0\u7236\u7c7b\u65b9\u6cd5\u3002<\/li>\n<\/ul>\n<p><strong>\u6700\u4f73\u5b9e\u8df5<\/strong><\/p>\n<p>\u5728 Java \u5f00\u53d1\u4e2d\u7ed3\u5408\u4f7f\u7528\u51fd\u6570\u5f0f\u7f16\u7a0b\u548c OOP \u7f16\u7a0b\u65f6\uff0c\u4ee5\u4e0b\u6700\u4f73\u5b9e\u8df5\u53ef\u4ee5\u5b9e\u73b0\u6700\u4f73\u6548\u679c\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u51fd\u6570\u5f0f\u7279\u6027\u589e\u5f3a OOP \u4ee3\u7801\uff1a<\/strong> \u5229\u7528 Stream API\u3001Lambda \u8868\u8fbe\u5f0f\u548c\u65b9\u6cd5\u5f15\u7528\u6765\u7b80\u5316\u590d\u6742\u64cd\u4f5c\u5e76\u63d0\u9ad8\u4ee3\u7801\u53ef\u8bfb\u6027\u3002<\/li>\n<li><strong>\u521b\u5efa\u53ef\u91cd\u7528\u7684\u51fd\u6570\uff1a<\/strong> \u5c06\u901a\u7528\u4efb\u52a1\u653e\u5165\u51fd\u6570\uff0c\u4ee5\u4fbf\u53ef\u4ee5\u5728\u4ee3\u7801\u5e93\u4e2d\u8f7b\u677e\u5730\u91cd\u590d\u4f7f\u7528\u3002<\/li>\n<li><strong>\u5c06\u72b6\u6001\u5c01\u88c5\u5728\u5bf9\u8c61\u4e2d\uff1a<\/strong> \u4f7f\u7528 OOP \u5c01\u88c5\u6982\u5ff5\u6765\u7ba1\u7406\u5e94\u7528\u7a0b\u5e8f\u72b6\u6001\uff0c\u907f\u514d\u5171\u4eab\u53ef\u53d8\u72b6\u6001\u800c\u5bfc\u81f4\u7ade\u6001\u6761\u4ef6\u3002<\/li>\n<li><strong>\u5229\u7528 OOP \u7684\u5c42\u6b21\u7ed3\u6784\uff1a<\/strong> \u4f7f\u7528\u7ee7\u627f\u548c\u591a\u6001\u6027\u7ec4\u7ec7\u4ee3\u7801\u5e76\u5efa\u7acb\u6e05\u6670\u7684\u7c7b\u5c42\u6b21\u7ed3\u6784\u3002<\/li>\n<\/ul>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a Java \u5b9e\u6218\u6848\u4f8b\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u7ed3\u5408\u4f7f\u7528\u51fd\u6570\u5f0f\u7f16\u7a0b\u548c OOP \u7f16\u7a0b\uff1a<\/p>\n<pre>public class OrderService {\n\n    \/\/ \u4f7f\u7528 Stream API \u8fc7\u6ee4\u8ba2\u5355\n    public List&lt;Order&gt; filterOrdersByStatus(List&lt;Order&gt; orders, OrderStatus status) {\n        return orders.stream()\n                .filter(order -&gt; order.getStatus() == status)\n                .toList();\n    }\n\n    \/\/ \u4f7f\u7528 Lambda \u8868\u8fbe\u5f0f\u8ba1\u7b97\u8ba2\u5355\u603b\u4ef7\n    public double calculateTotalOrderPrice(List&lt;Order&gt; orders) {\n        return orders.stream()\n                .mapToDouble(order -&gt; order.getTotalPrice())\n                .sum();\n    }\n\n    \/\/ OOP \u5b9e\u73b0\uff1a\u4f7f\u7528\u591a\u6001\u6027\u8ba1\u7b97\u8ba2\u5355\u603b\u4ef7\n    public double calculateTotalOrderPriceWithOOP(List&lt;Order&gt; orders) {\n        double total = 0.0;\n        for (Order order : orders) {\n            total += order.calculateTotalPrice();\n        }\n        return total;\n    }\n}<\/pre>\n<p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c<code>filterOrdersByStatus<\/code> \u65b9\u6cd5\u4f7f\u7528 Stream API \u548c Lambda \u8868\u8fbe\u5f0f\u6765\u8fc7\u6ee4\u8ba2\u5355\uff0c\u800c <code>calculateTotalOrderPrice<\/code> \u65b9\u6cd5\u4f7f\u7528 Stream API \u548c <code>mapToDouble<\/code> \u65b9\u6cd5\u6765\u8ba1\u7b97\u8ba2\u5355\u603b\u4ef7\u3002\u76f8\u53cd\uff0c<code>calculateTotalOrderPriceWithOOP<\/code> \u65b9\u6cd5\u4f7f\u7528 OOP \u904d\u5386\u548c\u591a\u6001\u6027\u6765\u5b9e\u73b0\u76f8\u540c\u7684\u529f\u80fd\u3002<\/p>\n<p>\u901a\u8fc7\u7ed3\u5408\u51fd\u6570\u5f0f\u7f16\u7a0b\u548c OOP \u7f16\u7a0b\uff0c\u8fd9\u4e2a\u4f8b\u5b50\u6f14\u793a\u4e86\u5982\u4f55\u4f7f\u7528\u51fd\u6570\u5f0f\u7279\u6027\u589e\u5f3a OOP \u4ee3\u7801\uff0c\u540c\u65f6\u5229\u7528 OOP \u7684\u5c42\u6b21\u7ed3\u6784\u548c\u591a\u6001\u6027\u6765\u7ec4\u7ec7\u548c\u8ba1\u7b97\u6570\u636e\u3002<\/p>\n<p>\u4eca\u5929\u5173\u4e8e\u300a\u51fd\u6570\u5f0f\u7f16\u7a0b\u4e0e OOP \u7f16\u7a0b\u5728 Java \u5f00\u53d1\u4e2d\u7684\u6700\u4f73\u5b9e\u8df5\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>\u51fd\u6570\u5f0f\u7f16\u7a0b\u4e0e OOP \u7f16\u7a0b\u5728 J&#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-202624","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202624","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=202624"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202624\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202624"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202624"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202624"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}