{"id":202539,"date":"2025-05-22T08:41:16","date_gmt":"2025-05-22T00:41:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202539\/"},"modified":"2025-05-22T08:41:16","modified_gmt":"2025-05-22T00:41:16","slug":"java%e5%87%bd%e6%95%b0%e5%bc%8f%e7%bc%96%e7%a8%8b%e5%9c%a8%e6%95%b0%e6%8d%ae%e5%a4%84%e7%90%86%e4%b8%ad%e4%b8%8e%e9%9d%a2%e5%90%91%e5%af%b9%e8%b1%a1%e7%bc%96%e7%a8%8b%e6%9c%89%e4%bd%95%e5%8c%ba","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202539\/","title":{"rendered":"Java\u51fd\u6570\u5f0f\u7f16\u7a0b\u5728\u6570\u636e\u5904\u7406\u4e2d\u4e0e\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\u6709\u4f55\u533a\u522b\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>Java\u51fd\u6570\u5f0f\u7f16\u7a0b\u5728\u6570\u636e\u5904\u7406\u4e2d\u4e0e\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\u6709\u4f55\u533a\u522b\uff1f<\/h1>\n<p><span style=\"font-size: 15px\">\u5b66\u4e60\u77e5\u8bc6\u8981\u5584\u4e8e\u601d\u8003\uff0c\u601d\u8003\uff0c\u518d\u601d\u8003\uff01\u4eca\u5929\u5c0f\u7f16\u5c31\u7ed9\u5927\u5bb6\u5e26\u6765<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aJava\u51fd\u6570\u5f0f\u7f16\u7a0b\u5728\u6570\u636e\u5904\u7406\u4e2d\u4e0e\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\u6709\u4f55\u533a\u522b\uff1f\u300b<\/span>\uff0c\u4ee5\u4e0b\u5185\u5bb9\u4e3b\u8981\u5305\u542b<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60\u6216\u51c6\u5907\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\uff0c\u5c31\u90fd\u4e0d\u8981\u9519\u8fc7\u672c\u6587\u5566~\u8ba9\u6211\u4eec\u4e00\u8d77\u6765\u770b\u770b\u5427\uff0c\u80fd\u5e2e\u52a9\u5230\u4f60\u5c31\u66f4\u597d\u4e86\uff01<\/span><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729915961671c6c39c8ad3.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>Java \u51fd\u6570\u5f0f\u7f16\u7a0b vs. \u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\uff1a\u6570\u636e\u5904\u7406\u7684\u5bf9\u6bd4<\/strong><\/p>\n<p>\u5728 Java \u6570\u636e\u5904\u7406\u4e2d\uff0c\u51fd\u6570\u5f0f\u7f16\u7a0b (FP) \u548c\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b (OOP) \u63d0\u4f9b\u4e86\u4e0d\u540c\u7684\u65b9\u6cd5\u3002<\/p>\n<p><strong>\u51fd\u6570\u5f0f\u7f16\u7a0b<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528\u7eaf\u51fd\u6570\uff0c\u6ca1\u6709\u4efb\u4f55\u526f\u4f5c\u7528\u6216\u53ef\u53d8\u72b6\u6001\u3002<\/li>\n<li>\u5f3a\u8c03\u4e0d\u53ef\u53d8\u6027\uff0c\u6570\u636e\u5728\u64cd\u4f5c\u540e\u4fdd\u6301\u4e0d\u53d8\u3002<\/li>\n<li>\u4f9d\u8d56\u4e8e\u9ad8\u7ea7\u51fd\u6570\uff0c\u5982\u6620\u5c04\u3001\u8fc7\u6ee4\u548c\u5f52\u7ea6\u3002<\/li>\n<\/ul>\n<p><strong>\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528\u5bf9\u8c61\uff0c\u5305\u542b\u6570\u636e\uff08\u72b6\u6001\uff09\u548c\u884c\u4e3a\uff08\u65b9\u6cd5\uff09\u3002<\/li>\n<li>\u91cd\u70b9\u5173\u6ce8\u4fee\u6539\u5bf9\u8c61\u7684\u72b6\u6001\u3002<\/li>\n<li>\u5f3a\u8c03\u5c01\u88c5\u548c\u7ee7\u627f\u7b49\u6982\u5ff5\u3002<\/li>\n<\/ul>\n<p><strong>\u5728\u6570\u636e\u5904\u7406\u4e2d\u7684\u5dee\u5f02<\/strong><\/p>\n<ul>\n<li><strong>\u4e0d\u53ef\u53d8\u6027\uff1a<\/strong>FP \u786e\u4fdd\u6570\u636e\u4e0d\u4f1a\u6539\u53d8\uff0c\u800c OOP \u5141\u8bb8\u6570\u636e\u88ab\u4fee\u6539\u3002<\/li>\n<li><strong>\u5e76\u884c\u6027\uff1a<\/strong>FP \u51fd\u6570\u4e00\u822c\u662f\u65e0\u72b6\u6001\u7684\uff0c\u53ef\u4ee5\u8f7b\u677e\u5730\u5e76\u884c\u6267\u884c\uff0c\u800c OOP \u5bf9\u8c61\u7684\u72b6\u6001\u53ef\u80fd\u9700\u8981\u540c\u6b65\u3002<\/li>\n<li><strong>\u53ef\u8bfb\u6027\uff1a<\/strong>FP \u4ee3\u7801\u5f80\u5f80\u66f4\u7b80\u6d01\u3001\u66f4\u6613\u4e8e\u9605\u8bfb\uff0c\u56e0\u4e3a\u5b83\u907f\u514d\u4e86\u5bf9\u8c61\u548c\u72b6\u6001\u7684\u590d\u6742\u6027\u3002<\/li>\n<li><strong>\u53ef\u6d4b\u8bd5\u6027\uff1a<\/strong>FP \u51fd\u6570\u662f\u4e0d\u53ef\u53d8\u7684\uff0c\u8fd9\u4f7f\u5f97\u5355\u5143\u6d4b\u8bd5\u66f4\u7b80\u5355\u53ef\u9760\u3002<\/li>\n<\/ul>\n<p><strong>\u5b9e\u6218\u6848\u4f8b\uff1a\u4f7f\u7528 Java Streams<\/strong><\/p>\n<p>Java Streams \u662f Java 8 \u4e2d\u5f15\u5165\u7684 FP \u5de5\u5177\u3002\u8ba9\u6211\u4eec\u6bd4\u8f83\u4e00\u4e0b\u4f7f\u7528 FP \u548c OOP \u8fdb\u884c\u6570\u636e\u8fc7\u6ee4\u7684\u4ee3\u7801\uff1a<\/p>\n<p><strong>OOP<\/strong><\/p>\n<pre>List&lt;Integer&gt; numbers = ...;\nList&lt;Integer&gt; filteredNumbers = new ArrayList&lt;&gt;();\nfor (Integer number : numbers) {\n    if (number % 2 == 0) {\n        filteredNumbers.add(number);\n    }\n}<\/pre>\n<p><strong>FP<\/strong><\/p>\n<pre>List&lt;Integer&gt; numbers = ...;\nList&lt;Integer&gt; filteredNumbers = numbers.stream()\n    .filter(n -&gt; n % 2 == 0)\n    .collect(Collectors.toList());<\/pre>\n<p>\u5982\u4f60\u6240\u89c1\uff0cFP \u4ee3\u7801\u4f7f\u7528\u94fe\u5f0f\u64cd\u4f5c\u5bf9\u6d41\u4e2d\u7684\u5143\u7d20\u6267\u884c\u8fc7\u6ee4\u548c\u6536\u96c6\u3002\u5b83\u66f4\u7b80\u6d01\uff0c\u907f\u514d\u4e86\u663e\u5f0f\u5faa\u73af\u548c\u53ef\u53d8\u5217\u8868\u3002<\/p>\n<p><strong>\u7ed3\u8bba<\/strong><\/p>\n<p>FP \u548c OOP \u5728\u6570\u636e\u5904\u7406\u4e2d\u7684\u533a\u522b\u4e3b\u8981\u5728\u4e8e\u4e0d\u53ef\u53d8\u6027\u3001\u5e76\u884c\u6027\u548c\u53ef\u8bfb\u6027\u3002\u5bf9\u4e8e\u5e76\u884c\u6027\u548c\u53ef\u8bfb\u6027\u8981\u6c42\u8f83\u9ad8\u7684\u6570\u636e\u5904\u7406\u4efb\u52a1\uff0cFP \u662f\u4e00\u4e2a\u5f3a\u5927\u7684\u9009\u62e9\u3002\u7136\u800c\uff0c\u5bf9\u4e8e\u9700\u8981\u5bf9\u590d\u6742\u5bf9\u8c61\u8fdb\u884c\u5efa\u6a21\u548c\u4fee\u6539\u7684\u4efb\u52a1\uff0cOOP \u4ecd\u7136\u662f\u66f4\u5408\u9002\u7684\u65b9\u6cd5\u3002<\/p>\n<p>\u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300aJava\u51fd\u6570\u5f0f\u7f16\u7a0b\u5728\u6570\u636e\u5904\u7406\u4e2d\u4e0e\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\u6709\u4f55\u533a\u522b\uff1f\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8\u516c\u4f17\u53f7\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java\u51fd\u6570\u5f0f\u7f16\u7a0b\u5728\u6570\u636e\u5904\u7406\u4e2d\u4e0e&#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-202539","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202539","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=202539"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202539\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202539"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202539"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202539"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}