{"id":202926,"date":"2025-05-22T09:28:26","date_gmt":"2025-05-22T01:28:26","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202926\/"},"modified":"2025-05-22T09:28:26","modified_gmt":"2025-05-22T01:28:26","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8java%e4%b8%ad%e5%ae%9a%e4%b9%89%e6%b5%81%e5%87%bd%e6%95%b0","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202926\/","title":{"rendered":"\u5982\u4f55\u5728Java\u4e2d\u5b9a\u4e49\u6d41\u51fd\u6570"},"content":{"rendered":"

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

\u5982\u4f55\u5728Java\u4e2d\u5b9a\u4e49\u6d41\u51fd\u6570<\/h1>\n

\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\u300a\u5982\u4f55\u5728Java\u4e2d\u5b9a\u4e49\u6d41\u51fd\u6570\u300b<\/span>\uff0c\u4ee5\u4e0b\u5185\u5bb9\u4e3b\u8981\u5305\u542b<\/span>\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60\u6216\u51c6\u5907\u5b66\u4e60\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

Java\u6d41\u51fd\u6570\u7b80\u4ecb\uff1a\u5728Java\u4e2d\uff0c\u6d41\u51fd\u6570\u901a\u8fc7lambda\u8868\u8fbe\u5f0f\u6216\u65b9\u6cd5\u5f15\u7528\u6765\u5b9a\u4e49\uff0c\u7528\u4e8e\u5bf9\u6570\u636e\u6d41\u5e94\u7528\u8f6c\u6362\u548c\u64cd\u4f5c\uff0c\u63d0\u9ad8\u4ee3\u7801\u7b80\u6d01\u6027\u3001\u53ef\u8bfb\u6027\u3001\u6027\u80fd\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n

<\/p>\n

\u5728Java\u4e2d\u5b9a\u4e49\u6d41\u51fd\u6570<\/h3>\n

\u7b80\u4ecb<\/strong><\/p>\n

\u6d41\u51fd\u6570\u662f\u4e00\u79cd\u5c06\u6570\u636e\u6d41\u5f0f\u4f20\u8f93\u5e76\u5e94\u7528\u8f6c\u6362\u548c\u64cd\u4f5c\u7684\u9ad8\u7ea7\u6784\u9020\u3002\u5728Java\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528lambda\u8868\u8fbe\u5f0f\u6216\u65b9\u6cd5\u5f15\u7528\u6765\u5b9a\u4e49\u6d41\u51fd\u6570\u3002<\/p>\n

\u4f7f\u7528lambda\u8868\u8fbe\u5f0f<\/strong><\/p>\n

lambda\u8868\u8fbe\u5f0f\u662f\u533f\u540d\u51fd\u6570\uff0c\u53ef\u4ee5\u7528\u4f5c\u6d41\u51fd\u6570\u3002\u683c\u5f0f\u4e3a\uff1a<\/p>\n

(parameter list) -> { function body }<\/pre>\n
\u4f8b\u5982\uff0c\u4ee5\u4e0blambda\u8868\u8fbe\u5f0f\u521b\u5efa\u4e86\u4e00\u4e2a\u6d41\u51fd\u6570\uff0c\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5927\u5199\uff1a<\/p>\n
Function<String, String> toUpperCase = s -> s.toUpperCase();<\/pre>\n
\u4f7f\u7528\u65b9\u6cd5\u5f15\u7528<\/strong><\/p>\n
\u65b9\u6cd5\u5f15\u7528\u662f\u4e00\u79cd\u5f15\u7528\u73b0\u6709\u65b9\u6cd5\u7684\u7b80\u77ed\u65b9\u5f0f\u3002\u683c\u5f0f\u4e3a\uff1a<\/p>\n
className::methodName<\/pre>\n
\u4f8b\u5982\uff0c\u4ee5\u4e0b\u65b9\u6cd5\u5f15\u7528\u521b\u5efa\u4e00\u4e2a\u6d41\u51fd\u6570\uff0c\u5c06\u6574\u6570\u52a01\uff1a<\/p>\n
Function<Integer, Integer> addOne = Integer::sum;<\/pre>\n
\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n
\u6848\u4f8b1\uff1a\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5927\u5199<\/strong><\/p>\n
List<String> strings = Arrays.asList(\"a\", \"b\", \"c\");\nList<String> upperCaseStrings = strings.stream()\n        .map(toUpperCase)\n        .collect(Collectors.toList());<\/pre>\n
\u6848\u4f8b2\uff1a\u5c06\u6574\u6570\u52a01<\/strong><\/p>\n
List<Integer> numbers = Arrays.asList(1, 2, 3);\nList<Integer> incrementedNumbers = numbers.stream()\n        .map(addOne)\n        .collect(Collectors.toList());<\/pre>\n
\u5176\u4ed6\u793a\u4f8b<\/strong><\/p>\n
\u4ee5\u4e0b\u662f\u66f4\u591a\u4f7f\u7528\u6d41\u51fd\u6570\u7684\u793a\u4f8b\uff1a<\/p>\n
    \n
  • \u7b5b\u9009\uff1aPredicate<\/code><\/li>\n
  • \u6620\u5c04\uff1aFunction<\/code><\/li>\n
  • \u5f52\u7ea6\uff1aBinaryOperator<\/code><\/li>\n<\/ul>\n
    \u4f18\u70b9<\/strong><\/p>\n
    \u4f7f\u7528\u6d41\u51fd\u6570\u7684\u4f18\u70b9\u5305\u62ec\uff1a<\/p>\n
      \n
    • \u7b80\u6d01\u7684\u4ee3\u7801<\/li>\n
    • \u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u63d0\u9ad8<\/li>\n
    • \u6027\u80fd\u589e\u5f3a\uff08\u7531\u4e8e\u6d41\u7684\u5ef6\u8fdf\u6c42\u503c\u7279\u6027\uff09<\/li>\n<\/ul>\n
      \u6587\u4e2d\u5173\u4e8ejava,\u6d41\u51fd\u6570\u7684\u77e5\u8bc6\u4ecb\u7ecd\uff0c\u5e0c\u671b\u5bf9\u4f60\u7684\u5b66\u4e60\u6709\u6240\u5e2e\u52a9\uff01\u82e5\u662f\u53d7\u76ca\u532a\u6d45\uff0c\u90a3\u5c31\u52a8\u52a8\u9f20\u6807\u6536\u85cf\u8fd9\u7bc7\u300a\u5982\u4f55\u5728Java\u4e2d\u5b9a\u4e49\u6d41\u51fd\u6570\u300b\u6587\u7ae0\u5427\uff0c\u4e5f\u53ef\u5173\u6ce8\u516c\u4f17\u53f7\u4e86\u89e3\u76f8\u5173\u6280\u672f\u6587\u7ae0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
      \u5982\u4f55\u5728Java\u4e2d\u5b9a\u4e49\u6d41\u51fd\u6570 \u5b66\u4e60...<\/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-202926","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202926","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=202926"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202926\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202926"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202926"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202926"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}