{"id":203038,"date":"2025-05-22T11:23:09","date_gmt":"2025-05-22T03:23:09","guid":{"rendered":"https:\/\/server.hk\/cnblog\/203038\/"},"modified":"2025-05-22T11:23:09","modified_gmt":"2025-05-22T03:23:09","slug":"%e5%87%bd%e6%95%b0%e5%bc%8f%e6%8e%a5%e5%8f%a3%e5%9c%a8java%e4%b8%ad%e7%9a%84%e5%ba%94%e7%94%a8%e6%9c%89%e5%93%aa%e4%ba%9b%e5%85%b7%e4%bd%93%e7%a4%ba%e4%be%8b%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/203038\/","title":{"rendered":"\u51fd\u6570\u5f0f\u63a5\u53e3\u5728Java\u4e2d\u7684\u5e94\u7528\u6709\u54ea\u4e9b\u5177\u4f53\u793a\u4f8b\uff1f"},"content":{"rendered":"

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

\u51fd\u6570\u5f0f\u63a5\u53e3\u5728Java\u4e2d\u7684\u5e94\u7528\u6709\u54ea\u4e9b\u5177\u4f53\u793a\u4f8b\uff1f<\/h1>\n

\u4e00\u5206\u8015\u8018\uff0c\u4e00\u5206\u6536\u83b7\uff01\u65e2\u7136\u6253\u5f00\u4e86\u8fd9\u7bc7\u6587\u7ae0\u300a\u51fd\u6570\u5f0f\u63a5\u53e3\u5728Java\u4e2d\u7684\u5e94\u7528\u6709\u54ea\u4e9b\u5177\u4f53\u793a\u4f8b\uff1f\u300b<\/span>\uff0c\u5c31\u575a\u6301\u770b\u4e0b\u53bb\u5427\uff01\u6587\u4e2d\u5185\u5bb9\u5305\u542b<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9…\u5e0c\u671b\u4f60\u80fd\u5728\u9605\u8bfb\u672c\u6587\u540e\uff0c\u80fd\u771f\u771f\u5b9e\u5b9e\u5b66\u5230\u77e5\u8bc6\u6216\u8005\u5e2e\u4f60\u89e3\u51b3\u5fc3\u4e2d\u7684\u7591\u60d1\uff0c\u4e5f\u6b22\u8fce\u5927\u4f6c\u6216\u8005\u65b0\u4eba\u670b\u53cb\u4eec\u591a\u7559\u8a00\u8bc4\u8bba\uff0c\u591a\u7ed9\u5efa\u8bae\uff01\u8c22\u8c22\uff01<\/p>\n

\u51fd\u6570\u5f0f\u63a5\u53e3\u5728 Java \u4e2d\u6307\u53ea\u6709\u4e00\u4e2a\u62bd\u8c61\u65b9\u6cd5\u7684\u63a5\u53e3\uff0c\u4e3b\u8981\u7528\u4e8e lambda \u8868\u8fbe\u5f0f\u548c\u65b9\u6cd5\u5f15\u7528\u3002\u5b83\u4eec\u5e7f\u6cdb\u5e94\u7528\u4e8e Java 8 \u7684 Stream API\u3001\u4e8b\u4ef6\u5904\u7406\u548c\u5e76\u884c\u7f16\u7a0b\u4e2d\u3002\u4f8b\u5982\uff0cStream API \u4e2d\u7684 filter() \u548c sum() \u65b9\u6cd5\u4f7f\u7528\u51fd\u6570\u5f0f\u63a5\u53e3\u5bf9\u6570\u636e\u8fdb\u884c\u5904\u7406\u548c\u805a\u5408\u3002\u5728\u4e8b\u4ef6\u5904\u7406\u4e2d\uff0cActionListener \u51fd\u6570\u5f0f\u63a5\u53e3\u7528\u4e8e\u54cd\u5e94 GUI \u4e8b\u4ef6\u3002\u5728\u5e76\u884c\u7f16\u7a0b\u4e2d\uff0cRunnable \u51fd\u6570\u5f0f\u63a5\u53e3\u8868\u793a\u53ef\u4ee5\u5e76\u884c\u6267\u884c\u7684\u4efb\u52a1\u3002\u6b64\u5916\uff0c\u51fd\u6570\u5f0f\u63a5\u53e3\u8fd8\u7528\u4e8e\u7b80\u5316\u57fa\u4e8e Java \u5bf9\u8c61\u7684 JSON \u5e8f\u5217\u5316\u8fc7\u7a0b\u3002<\/p>\n

<\/p>\n

\u51fd\u6570\u5f0f\u63a5\u53e3\u5728 Java \u4e2d\u7684\u5177\u4f53\u793a\u4f8b<\/strong><\/p>\n

\u51fd\u6570\u5f0f\u63a5\u53e3\u662f\u6307\u53ea\u6709\u4e00\u4e2a\u62bd\u8c61\u65b9\u6cd5\u7684\u63a5\u53e3\u3002\u5728 Java 8 \u4e2d\u5f15\u5165\uff0c\u5b83\u63d0\u4f9b\u4e86\u5bf9 lambda \u8868\u8fbe\u5f0f\u548c\u65b9\u6cd5\u5f15\u7528\u7684\u652f\u6301\u3002<\/p>\n

Stream API<\/strong><\/p>\n

Java 8 \u4e2d\u7684 Stream API \u5e7f\u6cdb\u4f7f\u7528\u51fd\u6570\u5f0f\u63a5\u53e3\u3002\u6d41\u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u51fd\u6570\u5f0f\u63a5\u53e3\u8fdb\u884c\u805a\u5408\u3001\u8fc7\u6ee4\u548c\u8f6c\u6362\uff1a<\/p>\n

List<Integer> numbers = List.of(1, 2, 3, 4, 5);\n\n\/\/ \u8fc7\u6ee4\u5947\u6570\nList<Integer> oddNumbers = numbers.stream()\n        .filter(number -> number % 2 == 1)\n        .toList();\n\n\/\/ \u6c42\u548c\nint sum = numbers.stream()\n        .mapToInt(number -> number)\n        .sum();<\/pre>\n
\u4e8b\u4ef6\u5904\u7406<\/strong><\/p>\n
\u51fd\u6570\u5f0f\u63a5\u53e3\u5728\u4e8b\u4ef6\u5904\u7406\u4e2d\u4e5f\u626e\u6f14\u7740\u91cd\u8981\u7684\u89d2\u8272\u3002\u4f8b\u5982\uff0cActionListener<\/code> \u662f\u4e00\u4e2a\u51fd\u6570\u5f0f\u63a5\u53e3\uff0c\u5b83\u7528\u4e8e\u54cd\u5e94 GUI \u4e8b\u4ef6\uff1a<\/p>\n
JButton button = new JButton(\"Click Me\");\n\n\/\/ \u6dfb\u52a0\u70b9\u51fb\u4e8b\u4ef6\u4fa6\u542c\u5668\nbutton.addActionListener(event -> System.out.println(\"Button clicked\"));<\/pre>\n
\u5e76\u884c\u7f16\u7a0b<\/strong><\/p>\n
\u51fd\u6570\u5f0f\u63a5\u53e3\u5728\u5e76\u884c\u7f16\u7a0b\u4e2d\u5f88\u6709\u7528\u3002\u4f8b\u5982\uff0cRunnable<\/code> \u662f\u4e00\u4e2a\u51fd\u6570\u5f0f\u63a5\u53e3\uff0c\u5b83\u8868\u793a\u4e00\u4e2a\u53ef\u4ee5\u5e76\u884c\u6267\u884c\u7684\u4efb\u52a1\uff1a<\/p>\n
Runnable task = () -> {\n    \/\/ \u6267\u884c\u4e00\u4e9b\u5e76\u884c\u4efb\u52a1\n};\n\nExecutorService executorService = Executors.newCachedThreadPool();\nexecutorService.submit(task);<\/pre>\n
\u5b9e\u6218\u6848\u4f8b\uff1a\u57fa\u4e8e\u51fd\u6570\u5f0f\u63a5\u53e3\u7684 JSON \u5e8f\u5217\u5316<\/strong><\/p>\n
\u4f7f\u7528\u51fd\u6570\u5f0f\u63a5\u53e3\uff0c\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u5b9e\u73b0\u57fa\u4e8e Java \u5bf9\u8c61\u7684 JSON \u5e8f\u5217\u5316\uff1a<\/p>\n
\/\/ \u51fd\u6570\u5f0f\u63a5\u53e3\ninterface JsonSerializer<T> {\n    String serialize(T object);\n}\n\n\/\/ \u5b9e\u73b0 Student \u7c7b\u7684\u5e8f\u5217\u5316\nclass StudentJsonSerializer implements JsonSerializer<Student> {\n\n    @Override\n    public String serialize(Student student) {\n        return \"{ \\\"name\\\": \\\"\" + student.getName() + \"\\\", \\\"age\\\": \" + student.getAge() + \" }\";\n    }\n}\n\npublic class Main {\n    public static void main(String[] args) {\n        Student student = new Student(\"John\", 25);\n        String json = new StudentJsonSerializer().serialize(student);\n\n        System.out.println(json); \/\/ \u8f93\u51fa\uff1a{ \"name\": \"John\", \"age\": 25 }\n    }\n}<\/pre>\n
\u51fd\u6570\u5f0f\u63a5\u53e3\u56e0\u5176\u7b80\u5316\u4ee3\u7801\u3001\u63d0\u9ad8\u53ef\u8bfb\u6027\u548c\u652f\u6301\u5e76\u53d1\u800c\u5e7f\u6cdb\u5e94\u7528\u4e8e Java \u4e2d\u3002<\/p>\n
\u672c\u7bc7\u5173\u4e8e\u300a\u51fd\u6570\u5f0f\u63a5\u53e3\u5728Java\u4e2d\u7684\u5e94\u7528\u6709\u54ea\u4e9b\u5177\u4f53\u793a\u4f8b\uff1f\u300b\u7684\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\u5566\uff0c\u4f46\u662f\u5b66\u65e0\u6b62\u5883\uff0c\u60f3\u8981\u4e86\u89e3\u5b66\u4e60\u66f4\u591a\u5173\u4e8e\u6587\u7ae0\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u51fd\u6570\u5f0f\u63a5\u53e3\u5728Java\u4e2d\u7684\u5e94\u7528\u6709\u54ea...<\/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-203038","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203038","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=203038"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203038\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=203038"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=203038"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=203038"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}