{"id":202923,"date":"2025-05-22T12:15:06","date_gmt":"2025-05-22T04:15:06","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202923\/"},"modified":"2025-05-22T12:15:06","modified_gmt":"2025-05-22T04:15:06","slug":"java%e5%87%bd%e6%95%b0%e5%bc%8f%e9%80%92%e5%bd%92%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8lambda%e8%a1%a8%e8%be%be%e5%bc%8f%e5%ae%9e%e7%8e%b0%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202923\/","title":{"rendered":"Java\u51fd\u6570\u5f0f\u9012\u5f52\u5982\u4f55\u4f7f\u7528lambda\u8868\u8fbe\u5f0f\u5b9e\u73b0\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>Java\u51fd\u6570\u5f0f\u9012\u5f52\u5982\u4f55\u4f7f\u7528lambda\u8868\u8fbe\u5f0f\u5b9e\u73b0\uff1f<\/h1>\n<p>\u7f16\u7a0b\u5e76\u4e0d\u662f\u4e00\u4e2a\u673a\u68b0\u6027\u7684\u5de5\u4f5c\uff0c\u800c\u662f\u9700\u8981\u6709\u601d\u8003\uff0c\u6709\u521b\u65b0\u7684\u5de5\u4f5c\uff0c\u8bed\u6cd5\u662f\u56fa\u5b9a\u7684\uff0c\u4f46\u89e3\u51b3\u95ee\u9898\u7684\u601d\u8def\u5219\u662f\u4f9d\u9760\u4eba\u7684\u601d\u7ef4\uff0c\u8fd9\u5c31\u9700\u8981\u6211\u4eec\u575a\u6301\u5b66\u4e60\u548c\u66f4\u65b0\u81ea\u5df1\u7684\u77e5\u8bc6\u3002\u4eca\u5929\u5c31\u6574\u7406\u5206\u4eab\u300aJava\u51fd\u6570\u5f0f\u9012\u5f52\u5982\u4f55\u4f7f\u7528lambda\u8868\u8fbe\u5f0f\u5b9e\u73b0\uff1f\u300b\uff0c\u6587\u7ae0\u8bb2\u89e3\u7684\u77e5\u8bc6\u70b9\u4e3b\u8981\u5305\u62ec\uff0c\u5982\u679c\u4f60\u5bf9\u6587\u7ae0\u65b9\u9762\u7684\u77e5\u8bc6\u70b9\u611f\u5174\u8da3\uff0c\u5c31\u4e0d\u8981\u9519\u8fc7\uff0c\u5728\u8fd9\u53ef\u4ee5\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5f00\u53d1\u80fd\u529b\u7684\u63d0\u5347\u3002<\/p>\n<p>Java \u4e2d\u4f7f\u7528 Lambda \u8868\u8fbe\u5f0f\u5b9e\u73b0\u51fd\u6570\u5f0f\u9012\u5f52\uff0c\u6b65\u9aa4\u5982\u4e0b\uff1a\u5b9a\u4e49 Lambda \u8868\u8fbe\u5f0f\u4ee5\u8868\u793a\u51fd\u6570\u3002\u5c06 Lambda \u8868\u8fbe\u5f0f\u4f5c\u4e3a\u53c2\u6570\u9012\u5f52\u8c03\u7528\u81ea\u8eab\u3002\u8fd4\u56de\u9012\u5f52\u8c03\u7528\u7684\u7ed3\u679c\u6216\u6700\u7ec8\u7ed3\u679c\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241027\/1729998926671db04eea5b1.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u4f7f\u7528 Lambda \u8868\u8fbe\u5f0f\u5b9e\u73b0 Java \u51fd\u6570\u5f0f\u9012\u5f52<\/strong><\/p>\n<p>\u51fd\u6570\u5f0f\u9012\u5f52\u662f\u4e00\u79cd\u5f3a\u5927\u7684\u7f16\u7a0b\u6280\u672f\uff0c\u5b83\u5141\u8bb8\u51fd\u6570\u91cd\u590d\u8c03\u7528\u81ea\u8eab\u6765\u89e3\u51b3\u95ee\u9898\u3002\u4f7f\u7528 Java 8 \u7684 Lambda \u8868\u8fbe\u5f0f\u53ef\u4ee5\u7b80\u5316\u51fd\u6570\u5f0f\u9012\u5f52\u7684\u5b9e\u73b0\u3002<\/p>\n<p><strong>\u57fa\u672c\u6982\u5ff5<\/strong><\/p>\n<p>\u51fd\u6570\u5f0f\u9012\u5f52\u4f9d\u8d56\u4e8e\u4ee5\u4e0b\u539f\u7406\uff1a<\/p>\n<ul>\n<li>\u4e00\u4e2a\u51fd\u6570\u53ef\u4ee5\u8c03\u7528\u81ea\u8eab\u3002<\/li>\n<li>\u51fd\u6570\u8fd4\u56de\u5b83\u81ea\u8eab\u6216\u53e6\u4e00\u4e2a\u51fd\u6570\u3002<\/li>\n<\/ul>\n<p><strong>Lambda \u8868\u8fbe\u5f0f\u5728\u51fd\u6570\u5f0f\u9012\u5f52\u4e2d\u7684\u5e94\u7528<\/strong><\/p>\n<p>Lambda \u8868\u8fbe\u5f0f\u63d0\u4f9b\u4e86\u7b80\u6d01\u7684\u65b9\u5f0f\u6765\u5b9a\u4e49\u548c\u8fd4\u56de\u533f\u540d\u51fd\u6570\u3002\u8fd9\u4f7f\u5f97\u51fd\u6570\u5f0f\u9012\u5f52\u7684\u5b9e\u73b0\u66f4\u52a0\u65b9\u4fbf\u3002\u8981\u4f7f\u7528 Lambda \u8868\u8fbe\u5f0f\u5b9e\u73b0\u51fd\u6570\u5f0f\u9012\u5f52\uff0c\u9700\u8981\u9075\u5faa\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n<ol>\n<li><strong>\u5b9a\u4e49 Lambda \u8868\u8fbe\u5f0f\uff1a<\/strong>\u521b\u5efa\u8868\u793a\u8981\u8c03\u7528\u7684\u51fd\u6570\u7684 Lambda \u8868\u8fbe\u5f0f\u3002<\/li>\n<li><strong>\u9012\u5f52\u8c03\u7528 Lambda \u8868\u8fbe\u5f0f\uff1a<\/strong>\u5c06 Lambda \u8868\u8fbe\u5f0f\u4f5c\u4e3a\u51fd\u6570\u81ea\u5df1\u7684\u53c2\u6570\u4f20\u9012\u7ed9\u81ea\u8eab\u3002<\/li>\n<li><strong>\u8fd4\u56de\u7ed3\u679c\uff1a<\/strong>\u8fd4\u56de\u9012\u5f52\u8c03\u7528\u7684\u7ed3\u679c\uff0c\u6216\u8005\u76f4\u63a5\u8fd4\u56de\u6700\u7ec8\u7ed3\u679c\u3002<\/li>\n<\/ol>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p>\u8003\u8651\u4ee5\u4e0b\u8ba1\u7b97\u9636\u4e58\u7684\u51fd\u6570\uff1a<\/p>\n<pre>public static int factorial(int n) {\n    if (n &lt;= 1) {\n        return 1;\n    } else {\n        \/\/ \u4f7f\u7528 Lambda \u8868\u8fbe\u5f0f\u5b9e\u73b0\u9012\u5f52\u8c03\u7528\n        return n * factorial(n - 1);\n    }\n}<\/pre>\n<p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff1a<\/p>\n<ul>\n<li><code>factorial()<\/code> \u51fd\u6570\u8c03\u7528\u81ea\u8eab\u6765\u9012\u5f52\u8ba1\u7b97\u9636\u4e58\u3002<\/li>\n<li>Lambda \u8868\u8fbe\u5f0f <code>() -&gt; factorial(n - 1)<\/code> \u8868\u793a\u9012\u5f52\u8c03\u7528\uff0c\u5b83\u8ba1\u7b97 <code>n - 1<\/code> \u7684\u9636\u4e58\u3002<\/li>\n<li>\u51fd\u6570\u8fd4\u56de\u9012\u5f52\u8c03\u7528\u7684\u7ed3\u679c\uff0c\u76f4\u5230\u8fbe\u5230\u9012\u5f52\u4e2d\u6b62\u6761\u4ef6\uff08<code>n &lt;= 1<\/code>\uff09\u3002<\/li>\n<\/ul>\n<p><strong>\u5176\u4ed6\u7528\u6cd5<\/strong><\/p>\n<p>\u51fd\u6570\u5f0f\u9012\u5f52\u8fd8\u53ef\u4ee5\u7528\u4e8e\u5b9e\u73b0\u5176\u4ed6\u7b97\u6cd5\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li>\u6c42\u548c<\/li>\n<li>\u6c42\u6700\u5927\u503c\/\u6700\u5c0f\u503c<\/li>\n<li>\u6570\u7ec4\u904d\u5386<\/li>\n<li>\u6811\u5f62\u7ed3\u6784\u7684\u904d\u5386<\/li>\n<\/ul>\n<p>\u901a\u8fc7\u7406\u89e3\u57fa\u672c\u539f\u7406\u548c\u4f7f\u7528 Lambda \u8868\u8fbe\u5f0f\uff0c\u53ef\u4ee5\u8f7b\u677e\u5b9e\u73b0 Java \u4e2d\u7684\u51fd\u6570\u5f0f\u9012\u5f52\uff0c\u4ece\u800c\u89e3\u51b3\u5404\u79cd\u7f16\u7a0b\u95ee\u9898\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>Java\u51fd\u6570\u5f0f\u9012\u5f52\u5982\u4f55\u4f7f\u7528lam&#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-202923","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202923","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=202923"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202923\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202923"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202923"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202923"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}