{"id":202654,"date":"2025-05-22T11:09:32","date_gmt":"2025-05-22T03:09:32","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202654\/"},"modified":"2025-05-22T11:09:32","modified_gmt":"2025-05-22T03:09:32","slug":"%e5%a6%82%e4%bd%95%e9%80%9a%e8%bf%87%e4%bd%bf%e7%94%a8-lambda-%e8%a1%a8%e8%be%be%e5%bc%8f%e6%8f%90%e5%8d%87-java-%e5%87%bd%e6%95%b0%e6%80%a7%e8%83%bd%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202654\/","title":{"rendered":"\u5982\u4f55\u901a\u8fc7\u4f7f\u7528 Lambda \u8868\u8fbe\u5f0f\u63d0\u5347 Java \u51fd\u6570\u6027\u80fd\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u5982\u4f55\u901a\u8fc7\u4f7f\u7528 Lambda \u8868\u8fbe\u5f0f\u63d0\u5347 Java \u51fd\u6570\u6027\u80fd\uff1f<\/h1>\n<p>\u5bf9\u4e8e\u4e00\u4e2a\u6587\u7ae0\u5f00\u53d1\u8005\u6765\u8bf4\uff0c\u7262\u56fa\u624e\u5b9e\u7684\u57fa\u7840\u662f\u5341\u5206\u91cd\u8981\u7684\uff0c\u5c31\u6765\u5e26\u5927\u5bb6\u4e00\u70b9\u70b9\u7684\u638c\u63e1\u57fa\u7840\u77e5\u8bc6\u70b9\u3002\u4eca\u5929\u672c\u7bc7\u6587\u7ae0\u5e26\u5927\u5bb6\u4e86\u89e3\u300a\u5982\u4f55\u901a\u8fc7\u4f7f\u7528 Lambda \u8868\u8fbe\u5f0f\u63d0\u5347 Java \u51fd\u6570\u6027\u80fd\uff1f\u300b\uff0c\u4e3b\u8981\u4ecb\u7ecd\u4e86\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u5feb\u70b9\u6536\u85cf\u8d77\u6765\u5427\uff0c\u5426\u5219\u9700\u8981\u65f6\u5c31\u627e\u4e0d\u5230\u4e86\uff01<\/p>\n<p>\u5982\u4f55\u901a\u8fc7 Lambda \u8868\u8fbe\u5f0f\u63d0\u5347 Java \u51fd\u6570\u6027\u80fd\uff1fLambda \u8868\u8fbe\u5f0f\u53ef\u7b80\u5316\u4ee3\u7801\u548c\u63d0\u5347\u6027\u80fd\uff1a\u4ee3\u7801\u66f4\u7b80\u6d01\uff0c\u53ef\u8bfb\u6027\u66f4\u9ad8\u3002\u6d88\u9664\u4e86\u521b\u5efa\u548c\u7ba1\u7406\u5355\u72ec\u65b9\u6cd5\u7684\u5f00\u9500\u3002\u63d0\u9ad8\u4e86\u4ee3\u7801\u7684\u53ef\u91cd\u7528\u6027\u548c\u7075\u6d3b\u6027\u3002\u6027\u80fd\u63d0\u5347\uff1a\u6d88\u9664\u4e86\u65b9\u6cd5\u5f00\u9500\uff0c\u5e76\u63d0\u4f9b\u4e86\u5e76\u884c\u5904\u7406\u80fd\u529b\uff0c\u9002\u5408\u5904\u7406\u5927\u91cf\u6570\u636e\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729928194671c9c02270fe.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u5982\u4f55\u901a\u8fc7\u4f7f\u7528 Lambda \u8868\u8fbe\u5f0f\u63d0\u5347 Java \u51fd\u6570\u6027\u80fd\uff1f<\/strong><\/p>\n<p>Lambda \u8868\u8fbe\u5f0f\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u533f\u540d\u51fd\u6570\uff0c\u53ef\u4ee5\u5728 Java \u4e2d\u7528\u4e8e\u7b80\u5316\u4ee3\u7801\u5e76\u63d0\u5347\u6027\u80fd\u3002\u5b83\u4eec\u5141\u8bb8\u60a8\u5c06\u4ee3\u7801\u5757\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\uff0c\u4ece\u800c\u907f\u514d\u521b\u5efa\u5355\u72ec\u7684\u65b9\u6cd5\u3002<\/p>\n<p><strong>\u4f18\u52bf\uff1a<\/strong><\/p>\n<ul>\n<li>\u4ee3\u7801\u66f4\u7b80\u6d01\uff0c\u53ef\u8bfb\u6027\u66f4\u9ad8\u3002<\/li>\n<li>\u6d88\u9664\u4e86\u521b\u5efa\u548c\u7ba1\u7406\u5355\u72ec\u65b9\u6cd5\u7684\u5f00\u9500\u3002<\/li>\n<li>\u63d0\u9ad8\u4e86\u4ee3\u7801\u7684\u53ef\u91cd\u7528\u6027\u548c\u7075\u6d3b\u6027\u3002<\/li>\n<\/ul>\n<p><strong>\u5b9e\u6218\u6848\u4f8b\uff1a<\/strong><\/p>\n<p>\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a <code>List&lt;Integer&gt;<\/code>\uff0c\u5e76\u5e0c\u671b\u5c06\u5176\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u5e73\u65b9\u540e\u5b58\u50a8\u5230\u65b0\u7684 <code>List<\/code> \u4e2d\u3002<\/p>\n<p><strong>\u4f20\u7edf\u65b9\u6cd5\uff1a<\/strong><\/p>\n<pre>import java.util.ArrayList;\nimport java.util.List;\n\npublic class TraditionalApproach {\n\n    public static void main(String[] args) {\n        List&lt;Integer&gt; numbers = new ArrayList&lt;&gt;();\n        numbers.add(1);\n        numbers.add(2);\n        numbers.add(3);\n\n        List&lt;Integer&gt; squaredNumbers = new ArrayList&lt;&gt;();\n\n        for (Integer number : numbers) {\n            squaredNumbers.add(number * number);\n        }\n\n        System.out.println(squaredNumbers);\n    }\n}<\/pre>\n<p><strong>Lambda \u8868\u8fbe\u5f0f\u65b9\u6cd5\uff1a<\/strong><\/p>\n<pre>import java.util.ArrayList;\nimport java.util.List;\n\npublic class LambdaApproach {\n\n    public static void main(String[] args) {\n        List&lt;Integer&gt; numbers = new ArrayList&lt;&gt;();\n        numbers.add(1);\n        numbers.add(2);\n        numbers.add(3);\n\n        List&lt;Integer&gt; squaredNumbers = numbers.stream()\n                .map(number -&gt; number * number)\n                .toList();\n\n        System.out.println(squaredNumbers);\n    }\n}<\/pre>\n<p>\u5728 <code>LambdaApproach<\/code> \u4e2d\uff1a<\/p>\n<ul>\n<li>\u6211\u4eec\u4f7f\u7528\u4e86 Java 8 \u7684 <code>stream()<\/code> \u65b9\u6cd5\u521b\u5efa\u4e86\u4e00\u4e2a\u6d41\u3002<\/li>\n<li><code>map()<\/code> \u65b9\u6cd5\u5c06\u6d41\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u8f6c\u6362\u4e3a\u5e73\u65b9\u503c\u3002<\/li>\n<li><code>toList()<\/code> \u65b9\u6cd5\u5c06\u8f6c\u6362\u540e\u7684\u6d41\u6536\u96c6\u5230\u4e00\u4e2a\u65b0\u7684\u5217\u8868\u4e2d\u3002<\/li>\n<\/ul>\n<p><strong>\u6027\u80fd\u63d0\u5347\uff1a<\/strong><\/p>\n<p>Lambda \u8868\u8fbe\u5f0f\u6d88\u9664\u4e86\u5355\u72ec\u65b9\u6cd5\u7684\u5f00\u9500\uff0c\u5e76\u63d0\u4f9b\u4e86\u5e76\u884c\u5904\u7406\u7684\u80fd\u529b\uff08\u53d6\u51b3\u4e8e\u5e95\u5c42\u96c6\u5408\uff09\u3002\u8fd9\u901a\u5e38\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u6267\u884c\u901f\u5ea6\uff0c\u5c24\u5176\u662f\u5bf9\u4e8e\u9700\u8981\u5904\u7406\u5927\u91cf\u6570\u636e\u7684\u60c5\u51b5\u3002<\/p>\n<p><strong>\u6ce8\u610f\u4e8b\u9879\uff1a<\/strong><\/p>\n<ul>\n<li>Lambda \u8868\u8fbe\u5f0f\u4f7f\u7528\u7684\u662f Java 8 \u53ca\u66f4\u9ad8\u7248\u672c\u3002<\/li>\n<li>\u5bf9\u4e8e\u7b80\u5355\u7684\u64cd\u4f5c\uff0cLambda \u8868\u8fbe\u5f0f\u53ef\u80fd\u6bd4\u4f20\u7edf\u65b9\u6cd5\u66f4\u52a0\u5197\u957f\u3002<\/li>\n<li>\u6ee5\u7528 Lambda \u8868\u8fbe\u5f0f\u53ef\u80fd\u4f1a\u5bfc\u81f4\u4ee3\u7801\u96be\u4ee5\u7406\u89e3\u548c\u7ef4\u62a4\u3002<\/li>\n<\/ul>\n<p>\u4eca\u5929\u5173\u4e8e\u300a\u5982\u4f55\u901a\u8fc7\u4f7f\u7528 Lambda \u8868\u8fbe\u5f0f\u63d0\u5347 Java \u51fd\u6570\u6027\u80fd\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,lambda\u7684\u5185\u5bb9\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u901a\u8fc7\u4f7f\u7528 Lambda \u8868\u8fbe&#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-202654","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202654","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=202654"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202654\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202654"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202654"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202654"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}