{"id":203094,"date":"2025-05-22T08:07:52","date_gmt":"2025-05-22T00:07:52","guid":{"rendered":"https:\/\/server.hk\/cnblog\/203094\/"},"modified":"2025-05-22T08:07:52","modified_gmt":"2025-05-22T00:07:52","slug":"java%e5%87%bd%e6%95%b0%e5%bc%8f%e6%8e%a5%e5%8f%a3%e7%9a%84%e6%9c%80%e4%bd%b3%e5%ae%9e%e8%b7%b5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/203094\/","title":{"rendered":"Java\u51fd\u6570\u5f0f\u63a5\u53e3\u7684\u6700\u4f73\u5b9e\u8df5"},"content":{"rendered":"

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

Java\u51fd\u6570\u5f0f\u63a5\u53e3\u7684\u6700\u4f73\u5b9e\u8df5<\/h1>\n

\u54c8\u55bd\uff01\u5927\u5bb6\u597d\uff0c\u5f88\u9ad8\u5174\u53c8\u89c1\u9762\u4e86\uff0c\u6211\u662f\u7684\u4e00\u540d\u4f5c\u8005\uff0c\u4eca\u5929\u7531\u6211\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u7bc7\u300aJava\u51fd\u6570\u5f0f\u63a5\u53e3\u7684\u6700\u4f73\u5b9e\u8df5\u300b<\/span>\uff0c\u672c\u6587\u4e3b\u8981\u4f1a\u8bb2\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u5927\u5bb6\u4e00\u8d77\u5b66\u4e60\u8fdb\u6b65\uff0c\u4e5f\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u3001\u70b9\u8d5e\u3001\u6536\u85cf\u3001\u8f6c\u53d1! \u4e0b\u9762\u5c31\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01<\/p>\n

\u51fd\u6570\u5f0f\u63a5\u53e3\u7684\u6700\u4f73\u5b9e\u8df5\u6d89\u53ca\u4ee5\u4e0b\u8981\u70b9\uff1a\u5b9a\u4e49\u6e05\u6670\u7684\u5951\u7ea6\uff1a\u660e\u786e\u4f20\u8fbe\u63a5\u53e3\u76ee\u7684\u3002\u8bbe\u8ba1\u4e3a\u4e0d\u53ef\u53d8\uff1a\u521b\u5efa\u540e\u4e0d\u53ef\u4fee\u6539\uff0c\u589e\u5f3a\u5e76\u53d1\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002\u4f7f\u7528\u9002\u5f53\u7684\u7c7b\u578b\uff1a\u5339\u914d\u65b9\u6cd5\u8fd4\u56de\u7c7b\u578b\uff0c\u63d0\u9ad8\u4ee3\u7801\u53ef\u8bfb\u6027\u3002\u8003\u8651\u9ed8\u8ba4\u65b9\u6cd5\uff1a\u63d0\u4f9b\u53ef\u9009\u5b9e\u73b0\uff0c\u51cf\u5c11\u4ee3\u7801\u91cd\u590d\u3002\u4f7f\u7528 lambda \u8868\u8fbe\u5f0f\uff1a\u7b80\u6d01\u9ad8\u6548\u5730\u5b9e\u73b0\uff0c\u6ce8\u610f\u8303\u56f4\u548c\u6355\u83b7\u53d8\u91cf\u3002<\/p>\n

<\/p>\n

Java \u51fd\u6570\u5f0f\u63a5\u53e3\u7684\u6700\u4f73\u5b9e\u8df5<\/strong><\/p>\n

\u51fd\u6570\u5f0f\u63a5\u53e3\u662f\u4e00\u79cd\u4ec5\u5305\u542b\u5355\u4e2a\u62bd\u8c61\u65b9\u6cd5\u7684\u63a5\u53e3\u3002\u5b83\u5141\u8bb8\u5728 Java 8 \u53ca\u66f4\u9ad8\u7248\u672c\u4e2d\u4f7f\u7528 lambda \u8868\u8fbe\u5f0f\u548c\u65b9\u6cd5\u5f15\u7528\u7b49\u529f\u80fd\u3002\u9075\u5faa\u6700\u4f73\u5b9e\u8df5\u5bf9\u4e8e\u786e\u4fdd\u51fd\u6570\u5f0f\u63a5\u53e3\u7684\u6709\u6548\u548c\u53ef\u7ef4\u62a4\u7684\u5b9e\u73b0\u975e\u5e38\u91cd\u8981\u3002<\/p>\n

\u6700\u4f73\u5b9e\u8df5\uff1a<\/strong><\/p>\n

    \n
  1. \u5b9a\u4e49\u6e05\u6670\u7684\u5951\u7ea6\uff1a<\/strong>\u51fd\u6570\u5f0f\u63a5\u53e3\u7684\u540d\u79f0\u548c\u65b9\u6cd5\u7b7e\u540d\u5e94\u6e05\u695a\u5730\u4f20\u8fbe\u5176\u76ee\u7684\u3002\u907f\u514d\u4f7f\u7528\u901a\u7528\u7684\u540d\u79f0\uff0c\u5982 “\u6267\u884c” \u6216 “\u5904\u7406”\u3002<\/li>\n
  2. \u8bbe\u8ba1\u4e3a\u4e0d\u53ef\u53d8\uff1a<\/strong>\u51fd\u6570\u5f0f\u63a5\u53e3\u5e94\u8bbe\u8ba1\u4e3a\u4e0d\u53ef\u53d8\u7684\uff0c\u8fd9\u610f\u5473\u7740\u5b83\u4eec\u5728\u521b\u5efa\u540e\u4e0d\u80fd\u88ab\u4fee\u6539\u3002\u8fd9\u6709\u52a9\u4e8e\u4fdd\u6301\u4ee3\u7801\u7684\u5e76\u53d1\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/li>\n
  3. \u4f7f\u7528\u9002\u5f53\u7684\u7c7b\u578b\uff1a<\/strong>\u51fd\u6570\u5f0f\u63a5\u53e3\u7684\u65b9\u6cd5\u7b7e\u540d\u5e94\u4f7f\u7528\u5408\u9002\u7684\u7c7b\u578b\u3002\u4f8b\u5982\uff0c\u5982\u679c\u8be5\u65b9\u6cd5\u8fd4\u56de\u4e00\u4e2a\u5e03\u5c14\u503c\uff0c\u5e94\u5c06\u5176\u58f0\u660e\u4e3a boolean<\/code>\uff0c\u800c\u4e0d\u662f Object<\/code>\u3002<\/li>\n
  4. \u8003\u8651\u9ed8\u8ba4\u65b9\u6cd5\uff1a<\/strong>\u51fd\u6570\u5f0f\u63a5\u53e3\u53ef\u4ee5\u5305\u542b\u9ed8\u8ba4\u65b9\u6cd5\uff0c\u8fd9\u4e9b\u65b9\u6cd5\u63d0\u4f9b\u53ef\u9009\u7684\u5b9e\u73b0\u3002\u8fd9\u53ef\u4ee5\u51cf\u5c11\u91cd\u590d\u7684\u4ee3\u7801\uff0c\u5e76\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u3002<\/li>\n
  5. \u4f7f\u7528 lambda \u8868\u8fbe\u5f0f\uff1a<\/strong>lambda \u8868\u8fbe\u5f0f\u5141\u8bb8\u7b80\u6d01\u548c\u9ad8\u6548\u5730\u5b9e\u73b0\u51fd\u6570\u5f0f\u63a5\u53e3\u3002\u5c3d\u91cf\u4f7f\u7528 lambda \u8868\u8fbe\u5f0f\uff0c\u4f46\u8981\u6ce8\u610f\u5b83\u4eec\u7684\u8303\u56f4\u548c\u6355\u83b7\u53d8\u91cf\u3002<\/li>\n<\/ol>\n

    \u5b9e\u6218\u6848\u4f8b\uff1a<\/strong><\/p>\n

    \u8003\u8651\u4e00\u4e2a\u51fd\u6570\u5f0f\u63a5\u53e3 Predicate<\/code>\uff0c\u5b83\u53ef\u4ee5\u6d4b\u8bd5\u5bf9\u8c61\u662f\u5426\u6ee1\u8db3\u67d0\u4e2a\u6761\u4ef6\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528 lambda \u8868\u8fbe\u5f0f\u5b9e\u73b0 Predicate<\/code> \u7684\u793a\u4f8b\uff1a<\/p>\n

    \/\/ \u5b9a\u4e49 Predicate \u51fd\u6570\u5f0f\u63a5\u53e3\ninterface Predicate<T> {\n    boolean test(T t);\n}\n\n\/\/ \u4f7f\u7528 lambda \u8868\u8fbe\u5f0f\u5b9e\u73b0 Predicate\nPredicate<String> isPalindrome = str -> str.equals(new StringBuilder(str).reverse().toString());\n\n\/\/ \u4f7f\u7528 isPalindrome Predicate\nList<String> strings = Arrays.asList(\"radar\", \"kayak\", \"hello\");\nList<String> palindromes = strings.stream().filter(isPalindrome).collect(Collectors.toList());\n\n\/\/ \u6253\u5370\u56de\u6587\u4e32\nSystem.out.println(palindromes);<\/pre>\n
    \u901a\u8fc7\u9075\u5faa\u8fd9\u4e9b\u6700\u4f73\u5b9e\u8df5\uff0c\u60a8\u53ef\u4ee5\u521b\u5efa\u7b80\u6d01\u3001\u53ef\u7ef4\u62a4\u548c\u53ef\u6269\u5c55\u7684\u51fd\u6570\u5f0f\u63a5\u53e3\u5b9e\u73b0\u3002<\/p>\n
    \u5230\u8fd9\u91cc\uff0c\u6211\u4eec\u4e5f\u5c31\u8bb2\u5b8c\u4e86\u300aJava\u51fd\u6570\u5f0f\u63a5\u53e3\u7684\u6700\u4f73\u5b9e\u8df5\u300b\u7684\u5185\u5bb9\u4e86\u3002\u4e2a\u4eba\u8ba4\u4e3a\uff0c\u57fa\u7840\u77e5\u8bc6\u7684\u5b66\u4e60\u548c\u5de9\u56fa\uff0c\u662f\u4e3a\u4e86\u66f4\u597d\u7684\u5c06\u5176\u8fd0\u7528\u5230\u9879\u76ee\u4e2d\uff0c\u6b22\u8fce\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u5e26\u4f60\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u6700\u4f73\u5b9e\u8df5,\u51fd\u6570\u5f0f\u63a5\u53e3\u7684\u77e5\u8bc6\u70b9\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    Java\u51fd\u6570\u5f0f\u63a5\u53e3\u7684\u6700\u4f73\u5b9e\u8df5 \u54c8...<\/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-203094","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203094","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=203094"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203094\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=203094"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=203094"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=203094"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}