{"id":202574,"date":"2025-05-22T08:19:24","date_gmt":"2025-05-22T00:19:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202574\/"},"modified":"2025-05-22T08:19:24","modified_gmt":"2025-05-22T00:19:24","slug":"%e4%bd%bf%e7%94%a8lambda%e8%a1%a8%e8%be%be%e5%bc%8f%e5%88%9b%e5%bb%bajava%e5%87%bd%e6%95%b0%e7%9a%84%e8%af%ad%e6%b3%95%e8%a7%84%e5%88%99%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202574\/","title":{"rendered":"\u4f7f\u7528Lambda\u8868\u8fbe\u5f0f\u521b\u5efaJava\u51fd\u6570\u7684\u8bed\u6cd5\u89c4\u5219\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

\u4f7f\u7528Lambda\u8868\u8fbe\u5f0f\u521b\u5efaJava\u51fd\u6570\u7684\u8bed\u6cd5\u89c4\u5219\u662f\u4ec0\u4e48\uff1f<\/h1>\n

\u6587\u7ae0<\/span>\u4e0d\u77e5\u9053\u5927\u5bb6\u662f\u5426\u719f\u6089\uff1f\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u4ecb\u7ecd\u300a\u4f7f\u7528Lambda\u8868\u8fbe\u5f0f\u521b\u5efaJava\u51fd\u6570\u7684\u8bed\u6cd5\u89c4\u5219\u662f\u4ec0\u4e48\uff1f\u300b<\/span>\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u4f1a\u8bb2\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u5728\u770b\u5b8c\u672c\u7bc7\u6587\u7ae0\u540e\uff0c\u6709\u66f4\u597d\u7684\u5efa\u8bae\u6216\u8005\u53d1\u73b0\u54ea\u91cc\u6709\u95ee\u9898\uff0c\u5e0c\u671b\u5927\u5bb6\u90fd\u80fd\u79ef\u6781\u8bc4\u8bba\u6307\u51fa\uff0c\u8c22\u8c22\uff01\u5e0c\u671b\u6211\u4eec\u80fd\u4e00\u8d77\u52a0\u6cb9\u8fdb\u6b65\uff01<\/p>\n

\u7b54\u6848\uff1a \u4f7f\u7528 Lambda \u8868\u8fbe\u5f0f\u521b\u5efa Java \u51fd\u6570\u7684\u8bed\u6cd5\u662f\uff1a(parameter1, parameter2, …, parameterN) -> { body}\uff0c\u5176\u4e2d\u53c2\u6570\u5217\u8868\u548c\u51fd\u6570\u4f53\u53ef\u6839\u636e\u9700\u8981\u586b\u5145\u3002\u89c4\u5219\uff1a\u53c2\u6570\u7c7b\u578b\u53ef\u7701\u7565\uff0c\u4f46\u63a8\u8350\u7528\u4e8e\u63d0\u5347\u53ef\u8bfb\u6027\u3002\u51fd\u6570\u4f53\u53ef\u4e3a\u8868\u8fbe\u5f0f\u6216\u5757\u8bed\u53e5\uff0c\u82e5\u4ec5\u4e3a\u5355\u884c\u8868\u8fbe\u5f0f\uff0c\u5927\u62ec\u53f7\u53ef\u7701\u7565\u3002\u65e0\u53c2\u6570\u65f6\uff0c\u62ec\u53f7\u53ef\u7701\u7565\u3002\u4f18\u52bf\uff1a\u8bed\u6cd5\u7b80\u6d01\uff0c\u589e\u5f3a\u53ef\u8bfb\u6027\u3002\u652f\u6301\u52a8\u6001\u51fd\u6570\u521b\u5efa\uff0c\u6269\u5c55\u4ee3\u7801\u91cd\u7528\u6027\u3002\u9002\u7528\u4e8e\u5e76\u884c\u5904\u7406\u3002<\/p>\n

<\/p>\n

\u4f7f\u7528 Lambda \u8868\u8fbe\u5f0f\u521b\u5efa Java \u51fd\u6570\u7684\u8bed\u6cd5<\/strong><\/p>\n

\u7b80\u4ecb<\/strong>
Lambda \u8868\u8fbe\u5f0f\u662f\u4e00\u79cd\u533f\u540d\u51fd\u6570\uff0c\u53ef\u4ee5\u7b80\u5316\u521b\u5efa\u51fd\u6570\u7684\u8bed\u6cd5\u3002\u5728 Java \u4e2d\uff0cLambda \u8868\u8fbe\u5f0f\u53ef\u4ee5\u7528\u4e8e\u521b\u5efa\u51fd\u6570\u63a5\u53e3\u7c7b\u578b\uff08\u53ea\u5305\u542b\u4e00\u4e2a\u62bd\u8c61\u65b9\u6cd5\u7684\u63a5\u53e3\uff09\u7684\u5b9e\u4f8b\u3002<\/p>\n

\u8bed\u6cd5<\/strong>
Lambda \u8868\u8fbe\u5f0f\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n

(parameter1, parameter2, ..., parameterN) -> { body }<\/pre>\n
\u5176\u4e2d\uff1a<\/p>\n
    \n
  • parameter1<\/code>, parameter2<\/code>, …, parameterN<\/code> \u662f\u51fd\u6570\u7684\u53c2\u6570\u5217\u8868\u3002<\/li>\n
  • body<\/code> \u662f\u51fd\u6570\u7684\u4e3b\u4f53\uff0c\u5b83\u5305\u542b\u51fd\u6570\u7684\u903b\u8f91\u3002<\/li>\n<\/ul>\n
    \u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n
    \u8003\u8651\u4ee5\u4e0b\u51fd\u6570\u63a5\u53e3\uff1a<\/p>\n
    interface MyFunction {\n    int apply(int x);\n}<\/pre>\n
    \u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 Lambda \u8868\u8fbe\u5f0f\u521b\u5efa\u8fd9\u4e2a\u63a5\u53e3\u7684\u5b9e\u4f8b\u5982\u4e0b\uff1a<\/p>\n
    MyFunction f = x -> x * x;<\/pre>\n
    \u8fd9\u4e2a Lambda \u8868\u8fbe\u5f0f\u8868\u793a\u4e00\u4e2a\u51fd\u6570\uff0c\u5b83\u5c06\u4e00\u4e2a\u6574\u6570\u7ec4\u4f5c\u4e3a\u8f93\u5165\u5e76\u5c06\u5176\u5e73\u65b9\u4f5c\u4e3a\u8f93\u51fa\u8fd4\u56de\u3002<\/p>\n
    \u89c4\u5219<\/strong><\/p>\n
    \u521b\u5efa Lambda \u8868\u8fbe\u5f0f\u65f6\uff0c\u9700\u8981\u9075\u5faa\u4ee5\u4e0b\u89c4\u5219\uff1a<\/p>\n
      \n
    • \u53c2\u6570\u7c7b\u578b\u662f\u53ef\u9009\u7684\uff0c\u4f46\u4f1a\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u3002<\/li>\n
    • \u4e3b\u4f53\u53ef\u4ee5\u662f\u5355\u4e2a\u8868\u8fbe\u5f0f\u6216\u5757\u8bed\u53e5\u3002<\/li>\n
    • \u5982\u679c\u4e3b\u4f53\u53ea\u6709\u4e00\u4e2a\u8868\u8fbe\u5f0f\uff0c\u5219\u5927\u62ec\u53f7\u53ef\u4ee5\u7701\u7565\u3002<\/li>\n
    • \u5982\u679c Lambda \u8868\u8fbe\u5f0f\u6ca1\u6709\u53c2\u6570\uff0c\u53ef\u4ee5\u7701\u7565\u62ec\u53f7\u3002<\/li>\n<\/ul>\n
      \u4f18\u52bf<\/strong><\/p>\n
      \u4f7f\u7528 Lambda \u8868\u8fbe\u5f0f\u521b\u5efa\u51fd\u6570\u7684\u4f18\u52bf\u5305\u62ec\uff1a<\/p>\n
        \n
      • \u7b80\u6d01\u6027\uff1a\u8bed\u6cd5\u7b80\u6d01\uff0c\u63d0\u9ad8\u4e86\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u3002<\/li>\n
      • \u53ef\u6269\u5c55\u6027\uff1a\u53ef\u4ee5\u52a8\u6001\u521b\u5efa\u51fd\u6570\uff0c\u63d0\u9ad8\u4e86\u4ee3\u7801\u7684\u53ef\u91cd\u7528\u6027\u548c\u7075\u6d3b\u6027\u3002<\/li>\n
      • \u5e76\u884c\u5904\u7406\uff1aLambda \u8868\u8fbe\u5f0f\u53ef\u4ee5\u8f7b\u677e\u7528\u4e8e\u5e76\u884c\u5904\u7406\u3002<\/li>\n<\/ul>\n
        \u4ee5\u4e0a\u5c31\u662f\u300a\u4f7f\u7528Lambda\u8868\u8fbe\u5f0f\u521b\u5efaJava\u51fd\u6570\u7684\u8bed\u6cd5\u89c4\u5219\u662f\u4ec0\u4e48\uff1f\u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8ejava\u7684\u8d44\u6599\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
        \u4f7f\u7528Lambda\u8868\u8fbe\u5f0f\u521b\u5efaJav...<\/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-202574","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202574","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=202574"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202574\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202574"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202574"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202574"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}