{"id":46673,"date":"2024-12-02T16:48:52","date_gmt":"2024-12-02T08:48:52","guid":{"rendered":"https:\/\/fwq.ai\/blog\/46673\/"},"modified":"2024-12-02T16:48:52","modified_gmt":"2024-12-02T08:48:52","slug":"%e4%bd%bf%e7%94%a8-lambda-%e8%a1%a8%e8%be%be%e5%bc%8f%e6%9d%a5%e7%ae%80%e5%8c%96-java-%e5%87%bd%e6%95%b0%e4%bb%a3%e7%a0%81%e7%9a%84%e6%8a%80%e5%b7%a7","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/46673\/","title":{"rendered":"\u4f7f\u7528 lambda \u8868\u8fbe\u5f0f\u6765\u7b80\u5316 Java \u51fd\u6570\u4ee3\u7801\u7684\u6280\u5de7"},"content":{"rendered":"

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

\u4f7f\u7528 lambda \u8868\u8fbe\u5f0f\u6765\u7b80\u5316 Java \u51fd\u6570\u4ee3\u7801\u7684\u6280\u5de7<\/h1>\n

\u6700\u8fd1\u53d1\u73b0\u4e0d\u5c11\u5c0f\u4f19\u4f34\u90fd\u5bf9\u6587\u7ae0<\/span>\u5f88\u611f\u5174\u8da3\uff0c\u6240\u4ee5\u4eca\u5929\u7ee7\u7eed\u7ed9\u5927\u5bb6\u4ecb\u7ecd\u6587\u7ae0<\/span>\u76f8\u5173\u7684\u77e5\u8bc6\uff0c\u672c\u6587\u300a\u4f7f\u7528 lambda \u8868\u8fbe\u5f0f\u6765\u7b80\u5316 Java \u51fd\u6570\u4ee3\u7801\u7684\u6280\u5de7\u300b<\/span>\u4e3b\u8981\u5185\u5bb9\u6d89\u53ca\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff01\u5f53\u7136\u5982\u679c\u9605\u8bfb\u672c\u6587\u65f6\u5b58\u5728\u4e0d\u540c\u60f3\u6cd5\uff0c\u53ef\u4ee5\u5728\u8bc4\u8bba\u4e2d\u8868\u8fbe\uff0c\u4f46\u662f\u8bf7\u52ff\u4f7f\u7528\u8fc7\u6fc0\u7684\u63aa\u8f9e~<\/p>\n

\"\u4f7f\u7528<\/p>\n

\u4f7f\u7528 Lambda \u8868\u8fbe\u5f0f\u7cbe\u7b80 Java \u51fd\u6570\u4ee3\u7801<\/strong><\/p>\n

Lambda \u8868\u8fbe\u5f0f\u662f Java 8 \u4e2d\u5f15\u5165\u7684\u5f3a\u5927\u529f\u80fd\uff0c\u53ef\u4ee5\u7b80\u5316\u51fd\u6570\u4ee3\u7801\uff0c\u4f7f\u5176\u66f4\u6613\u4e8e\u9605\u8bfb\u548c\u7ef4\u62a4\u3002\u901a\u8fc7\u4f7f\u7528 lambda \u8868\u8fbe\u5f0f\uff0c\u60a8\u53ef\u4ee5\u5c06\u51fd\u6570\u4ee3\u7801\u8868\u793a\u4e3a\u533f\u540d\u51fd\u6570\uff0c\u65e0\u9700\u5b9a\u4e49\u5355\u72ec\u7684\u51fd\u6570\u63a5\u53e3\u6216\u5b9e\u73b0\u7c7b\u3002<\/p>\n

\u8bed\u6cd5\uff1a<\/strong><\/p>\n

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

(\u53c2\u6570\u5217\u8868) -> {\n    \u51fd\u6570\u4f53\n}<\/pre>\n
\u5b9e\u6218\u6848\u4f8b\uff1a<\/strong><\/p>\n
\u4e3a\u4e86\u6f14\u793a lambda \u8868\u8fbe\u5f0f\u7684\u4f7f\u7528\uff0c\u8ba9\u6211\u4eec\u521b\u5efa\u4e00\u4e2a\u7b80\u5355\u7684\u5217\u8868\u8fc7\u6ee4\u793a\u4f8b\uff1a<\/p>\n
\u4f20\u7edf\u65b9\u5f0f\uff1a<\/strong><\/p>\n
import java.util.List;\nimport java.util.ArrayList;\n\npublic class Main {\n    public static void main(String[] args) {\n        List<Integer> numbers = new ArrayList<>();\n        numbers.add(1);\n        numbers.add(2);\n        numbers.add(3);\n        numbers.add(4);\n        numbers.add(5);\n\n        List<Integer> evenNumbers = new ArrayList<>();\n        for (int number : numbers) {\n            if (number % 2 == 0) {\n                evenNumbers.add(number);\n            }\n        }\n\n        System.out.println(evenNumbers);\n    }\n}<\/pre>\n
\u4f7f\u7528 Lambda \u8868\u8fbe\u5f0f\uff1a<\/strong><\/p>\n
import java.util.List;\nimport java.util.ArrayList;\n\npublic class Main {\n    public static void main(String[] args) {\n        List<Integer> numbers = new ArrayList<>();\n        numbers.add(1);\n        numbers.add(2);\n        numbers.add(3);\n        numbers.add(4);\n        numbers.add(5);\n\n        List<Integer> evenNumbers = numbers.stream()\n                .filter(number -> number % 2 == 0) \/\/ \u4f7f\u7528 lambda \u8868\u8fbe\u5f0f\u8fc7\u6ee4\u5076\u6570\n                .toList();\n\n        System.out.println(evenNumbers);\n    }\n}<\/pre>\n
\u5982\u60a8\u6240\u89c1\uff0c\u4f7f\u7528 lambda \u8868\u8fbe\u5f0f\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u4e00\u884c\u4ee3\u7801\u4e2d\u5b9e\u73b0\u76f8\u540c\u7684\u8fc7\u6ee4\u903b\u8f91\uff0c\u4ece\u800c\u4f7f\u4ee3\u7801\u66f4\u52a0\u7b80\u6d01\u3002<\/p>\n
\u4f18\u70b9\uff1a<\/strong><\/p>\n
\u4f7f\u7528 lambda \u8868\u8fbe\u5f0f\u5bf9 Java \u51fd\u6570\u4ee3\u7801\u8fdb\u884c\u7cbe\u7b80\u5177\u6709\u4ee5\u4e0b\u4f18\u70b9\uff1a<\/p>\n
    \n
  • \u53ef\u8bfb\u6027\u63d0\u9ad8\uff1a<\/strong>lambda \u8868\u8fbe\u5f0f\u53ef\u4ee5\u4f7f\u4ee3\u7801\u66f4\u6613\u4e8e\u9605\u8bfb\uff0c\u56e0\u4e3a\u5b83\u4eec\u53ef\u4ee5\u5c06\u51fd\u6570\u903b\u8f91\u4e0e\u7c7b\u6216\u63a5\u53e3\u7684\u5b9a\u4e49\u5206\u79bb\u3002<\/li>\n
  • \u53ef\u7ef4\u62a4\u6027\u589e\u5f3a\uff1a<\/strong>lambda \u8868\u8fbe\u5f0f\u53ef\u4ee5\u51cf\u5c11\u6837\u677f\u4ee3\u7801\u7684\u6570\u91cf\uff0c\u4ece\u800c\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027\u3002<\/li>\n
  • \u4ee3\u7801\u7b80\u5316\uff1a<\/strong>lambda \u8868\u8fbe\u5f0f\u53ef\u4ee5\u4f7f\u4ee3\u7801\u66f4\u7b80\u6d01\uff0c\u6d88\u9664\u521b\u5efa\u548c\u5b9e\u73b0\u5355\u72ec\u7684\u51fd\u6570\u63a5\u53e3\u6216\u7c7b\u7684\u9700\u8981\u3002<\/li>\n<\/ul>\n
    \u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300a\u4f7f\u7528 lambda \u8868\u8fbe\u5f0f\u6765\u7b80\u5316 Java \u51fd\u6570\u4ee3\u7801\u7684\u6280\u5de7\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~\u7c73\u4e91\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03\u6587\u7ae0\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u4f7f\u7528 lambda \u8868\u8fbe\u5f0f\u6765\u7b80\u5316 Java \u51fd\u6570\u4ee3\u7801\u7684\u6280\u5de7 \u6700\u8fd1\u53d1\u73b0\u4e0d\u5c11\u5c0f\u4f19\u4f34\u90fd\u5bf9\u6587\u7ae0\u5f88\u611f\u5174\u8da3\uff0c\u6240\u4ee5\u4eca\u5929\u7ee7\u7eed\u7ed9\u5927\u5bb6\u4ecb\u7ecd\u6587\u7ae0\u76f8\u5173\u7684\u77e5\u8bc6\uff0c\u672c\u6587\u300a\u4f7f\u7528 lambda \u8868\u8fbe\u5f0f\u6765\u7b80\u5316 Java \u51fd\u6570\u4ee3\u7801\u7684\u6280\u5de7\u300b\u4e3b\u8981\u5185\u5bb9\u6d89\u53ca\u5230\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff01\u5f53\u7136\u5982\u679c\u9605\u8bfb\u672c\u6587\u65f6\u5b58\u5728\u4e0d\u540c\u60f3\u6cd5\uff0c\u53ef\u4ee5\u5728\u8bc4\u8bba\u4e2d\u8868\u8fbe\uff0c\u4f46\u662f\u8bf7\u52ff\u4f7f\u7528\u8fc7\u6fc0\u7684\u63aa\u8f9e~ \u4f7f\u7528 Lambda \u8868\u8fbe\u5f0f\u7cbe\u7b80 Java \u51fd\u6570\u4ee3\u7801 Lambda \u8868\u8fbe\u5f0f\u662f Java 8 \u4e2d\u5f15\u5165\u7684\u5f3a\u5927\u529f\u80fd\uff0c\u53ef\u4ee5\u7b80\u5316\u51fd\u6570\u4ee3\u7801\uff0c\u4f7f\u5176\u66f4\u6613\u4e8e\u9605\u8bfb\u548c\u7ef4\u62a4\u3002\u901a\u8fc7\u4f7f\u7528 lambda \u8868\u8fbe\u5f0f\uff0c\u60a8\u53ef\u4ee5\u5c06\u51fd\u6570\u4ee3\u7801\u8868\u793a\u4e3a\u533f\u540d\u51fd\u6570\uff0c\u65e0\u9700\u5b9a\u4e49\u5355\u72ec\u7684\u51fd\u6570\u63a5\u53e3\u6216\u5b9e\u73b0\u7c7b\u3002 \u8bed\u6cd5\uff1a Lambda \u8868\u8fbe\u5f0f\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a (\u53c2\u6570\u5217\u8868) -> { \u51fd\u6570\u4f53 } \u5b9e\u6218\u6848\u4f8b\uff1a \u4e3a\u4e86\u6f14\u793a lambda \u8868\u8fbe\u5f0f\u7684\u4f7f\u7528\uff0c\u8ba9\u6211\u4eec\u521b\u5efa\u4e00\u4e2a\u7b80\u5355\u7684\u5217\u8868\u8fc7\u6ee4\u793a\u4f8b\uff1a \u4f20\u7edf\u65b9\u5f0f\uff1a import java.util.List; import java.util.ArrayList; public class Main { public static void main(String[] args) { List<Integer> numbers = new ArrayList<>(); numbers.add(1); […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-46673","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/46673","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=46673"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/46673\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=46673"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=46673"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=46673"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}