{"id":202903,"date":"2025-05-22T09:54:34","date_gmt":"2025-05-22T01:54:34","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202903\/"},"modified":"2025-05-22T09:54:34","modified_gmt":"2025-05-22T01:54:34","slug":"%e9%ab%98%e9%98%b6%e5%87%bd%e6%95%b0%e5%9c%a8-java-%e5%87%bd%e6%95%b0%e5%90%88%e6%88%90%e4%b8%ad%e7%9a%84%e4%bd%9c%e7%94%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202903\/","title":{"rendered":"\u9ad8\u9636\u51fd\u6570\u5728 Java \u51fd\u6570\u5408\u6210\u4e2d\u7684\u4f5c\u7528"},"content":{"rendered":"

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

\u9ad8\u9636\u51fd\u6570\u5728 Java \u51fd\u6570\u5408\u6210\u4e2d\u7684\u4f5c\u7528<\/h1>\n

\u5728\u6587\u7ae0\u5b9e\u6218\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u9047\u5230\u4e00\u4e9b\u8fd9\u6837\u90a3\u6837\u7684\u95ee\u9898\uff0c\u7136\u540e\u8981\u5361\u597d\u534a\u5929\uff0c\u7b49\u95ee\u9898\u89e3\u51b3\u4e86\u624d\u53d1\u73b0\u539f\u6765\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u662f\u6ca1\u6709\u638c\u63e1\u597d\u3002\u4eca\u5929\u5c31\u6574\u7406\u5206\u4eab\u300a\u9ad8\u9636\u51fd\u6570\u5728 Java \u51fd\u6570\u5408\u6210\u4e2d\u7684\u4f5c\u7528\u300b\uff0c\u804a\u804a\uff0c\u5e0c\u671b\u53ef\u4ee5\u5e2e\u52a9\u5230\u6b63\u5728\u52aa\u529b\u8d5a\u94b1\u7684\u4f60\u3002<\/p>\n

\u5728 Java \u51fd\u6570\u5408\u6210\u4e2d\uff0c\u9ad8\u9636\u51fd\u6570\u7684\u4f5c\u7528\u662f\uff1a\u5141\u8bb8\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\uff1b\u652f\u6301\u51fd\u6570\u7ec4\u5408\uff0c\u521b\u5efa\u66f4\u590d\u6742\u7684\u65b0\u51fd\u6570\uff1b\u5b9e\u73b0\u4e86\u6570\u636e\u5904\u7406\u7ba1\u7ebf\u3001\u4e8b\u4ef6\u5904\u7406\u548c\u51fd\u6570\u5f0f\u7f16\u7a0b\u7b49\u5b9e\u6218\u6848\u4f8b\u3002<\/p>\n

<\/p>\n

\u9ad8\u9636\u51fd\u6570\u5728 Java \u51fd\u6570\u5408\u6210\u4e2d\u7684\u4f5c\u7528<\/h2>\n

\u51fd\u6570\u5408\u6210\u662f\u4e00\u79cd\u901a\u8fc7\u5c06\u51fd\u6570\u7ec4\u5408\u5728\u4e00\u8d77\u521b\u5efa\u65b0\u51fd\u6570\u7684\u6280\u672f\u3002\u5728 Java \u4e2d\uff0c\u9ad8\u9636\u51fd\u6570\u4f7f\u51fd\u6570\u5408\u6210\u6210\u4e3a\u53ef\u80fd\uff0c\u56e0\u4e3a\u5b83\u5141\u8bb8\u5c06\u4e00\u4e2a\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9\u53e6\u4e00\u4e2a\u51fd\u6570\u3002<\/p>\n

\u4ec0\u4e48\u662f\u9ad8\u9636\u51fd\u6570\uff1f<\/h3>\n

\u9ad8\u9636\u51fd\u6570\u662f\u63a5\u53d7\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570\u6216\u8fd4\u56de\u51fd\u6570\u4f5c\u4e3a\u7ed3\u679c\u7684\u51fd\u6570\u3002\u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u58f0\u660e\u9ad8\u9636\u51fd\u6570\u5982\u4e0b\uff1a<\/p>\n

Function<T, R> func(Function<U, V> f)<\/pre>\n
\u5176\u4e2d\uff1a<\/p>\n
    \n
  • T<\/code> \u662f\u8f93\u5165\u53c2\u6570\u7684\u7c7b\u578b<\/li>\n
  • R<\/code> \u662f\u8fd4\u56de\u7c7b\u578b\u7684\u7c7b\u578b<\/li>\n
  • U<\/code> \u662f\u5185\u90e8\u51fd\u6570\u63a5\u6536\u53c2\u6570\u7684\u7c7b\u578b<\/li>\n
  • V<\/code> \u662f\u5185\u90e8\u51fd\u6570\u8fd4\u56de\u7c7b\u578b\u7684\u7c7b\u578b<\/li>\n<\/ul>\n
    \u51fd\u6570\u5408\u6210<\/h3>\n
    \u51fd\u6570\u5408\u6210\u4f7f\u7528\u9ad8\u9636\u51fd\u6570\u7ec4\u5408\u4e24\u4e2a\u6216\u591a\u4e2a\u51fd\u6570\u3002\u4ee5\u4e0b Java \u4ee3\u7801\u5c55\u793a\u4e86\u4e00\u4e2a\u51fd\u6570\u5408\u6210\u793a\u4f8b\uff1a<\/p>\n
    Function<Integer, Integer> add5 = x -> x + 5;\nFunction<Integer, Integer> multiplyBy2 = y -> y * 2;\n\n\/\/ \u521b\u5efa\u4e00\u4e2a\u5408\u6210\u51fd\u6570\nFunction<Integer, Integer> add5AndMultiplyBy2 = add5.andThen(multiplyBy2);\n\n\/\/ \u4f7f\u7528\u5408\u6210\u51fd\u6570\nint result = add5AndMultiplyBy2.apply(10); \/\/ 30<\/pre>\n
    \u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff1a<\/p>\n
      \n
    • add5<\/code> \u51fd\u6570\u5c06\u8f93\u5165\u503c\u589e\u52a0 5\u3002<\/li>\n
    • multiplyBy2<\/code> \u51fd\u6570\u5c06\u8f93\u5165\u503c\u4e58\u4ee5 2\u3002<\/li>\n
    • andThen<\/code> \u65b9\u6cd5\u8fd4\u56de\u4e00\u4e2a\u5408\u6210\u51fd\u6570\uff0c\u5b83\u5c06 add5<\/code> \u7684\u7ed3\u679c\u4f5c\u4e3a multiplyBy2<\/code> \u7684\u8f93\u5165\u3002<\/li>\n
    • apply<\/code> \u65b9\u6cd5\u8c03\u7528\u5408\u6210\u51fd\u6570 add5AndMultiplyBy2<\/code> \u5e76\u4f20\u9012\u8f93\u5165\u503c 10\u3002<\/li>\n<\/ul>\n
      \u5b9e\u6218\u6848\u4f8b<\/h3>\n
      \u51fd\u6570\u5408\u6210\u5728 Java \u4e2d\u7684\u5b9e\u9645\u5e94\u7528\u5305\u62ec\uff1a<\/p>\n
        \n
      • \u6570\u636e\u5904\u7406\u7ba1\u7ebf\uff1a<\/strong>\u5c06\u591a\u4e2a\u6570\u636e\u5904\u7406\u64cd\u4f5c\u94fe\u63a5\u5728\u4e00\u8d77\uff0c\u5f62\u6210\u4e00\u4e2a\u7aef\u5230\u7aef\u7684\u7ba1\u7ebf\u3002<\/li>\n
      • \u4e8b\u4ef6\u5904\u7406\uff1a<\/strong>\u5c06\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u7ec4\u5408\u8d77\u6765\uff0c\u521b\u5efa\u590d\u6742\u7684\u4e8b\u4ef6\u5904\u7406\u7cfb\u7edf\u3002<\/li>\n
      • \u51fd\u6570\u5f0f\u7f16\u7a0b\u8303\u4f8b\uff1a<\/strong>\u901a\u8fc7\u7ec4\u5408\u9ad8\u9636\u51fd\u6570\u548c lambda \u8868\u8fbe\u5f0f\uff0c\u5b9e\u73b0\u590d\u6742\u7684\u884c\u4e3a\u3002<\/li>\n<\/ul>\n
        \u7406\u89e3\u9ad8\u9636\u51fd\u6570\u5728\u51fd\u6570\u5408\u6210\u4e2d\u7684\u4f5c\u7528\u5bf9\u4e8e Java \u7a0b\u5e8f\u5458\u7f16\u5199\u9ad8\u6548\u3001\u53ef\u8bfb\u548c\u53ef\u7ef4\u62a4\u7684\u4ee3\u7801\u81f3\u5173\u91cd\u8981\u3002<\/p>\n
        \u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300a\u9ad8\u9636\u51fd\u6570\u5728 Java \u51fd\u6570\u5408\u6210\u4e2d\u7684\u4f5c\u7528\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8\u516c\u4f17\u53f7\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
        \u9ad8\u9636\u51fd\u6570\u5728 Java \u51fd\u6570\u5408\u6210\u4e2d...<\/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-202903","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202903","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=202903"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202903\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202903"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202903"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202903"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}