{"id":203001,"date":"2025-05-22T12:18:34","date_gmt":"2025-05-22T04:18:34","guid":{"rendered":"https:\/\/server.hk\/cnblog\/203001\/"},"modified":"2025-05-22T12:18:34","modified_gmt":"2025-05-22T04:18:34","slug":"java%e5%87%bd%e6%95%b0%e5%bc%8f%e6%8e%a5%e5%8f%a3%e5%9c%a8%e5%88%86%e5%b8%83%e5%bc%8f%e8%ae%a1%e7%ae%97%e4%b8%ad%e7%9a%84%e5%ba%94%e7%94%a8%e5%9c%ba%e6%99%af","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/203001\/","title":{"rendered":"Java\u51fd\u6570\u5f0f\u63a5\u53e3\u5728\u5206\u5e03\u5f0f\u8ba1\u7b97\u4e2d\u7684\u5e94\u7528\u573a\u666f"},"content":{"rendered":"

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

Java\u51fd\u6570\u5f0f\u63a5\u53e3\u5728\u5206\u5e03\u5f0f\u8ba1\u7b97\u4e2d\u7684\u5e94\u7528\u573a\u666f<\/h1>\n

\u73cd\u60dc\u65f6\u95f4\uff0c\u52e4\u594b\u5b66\u4e60\uff01\u4eca\u5929\u7ed9\u5927\u5bb6\u5e26\u6765\u300aJava\u51fd\u6570\u5f0f\u63a5\u53e3\u5728\u5206\u5e03\u5f0f\u8ba1\u7b97\u4e2d\u7684\u5e94\u7528\u573a\u666f\u300b<\/span>\uff0c\u6b63\u6587\u5185\u5bb9\u4e3b\u8981\u6d89\u53ca\u5230<\/span>\u7b49\u7b49\uff0c\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60\u6587\u7ae0<\/span>\uff0c\u6216\u8005\u662f\u5bf9\u6587\u7ae0<\/span>\u6709\u7591\u95ee\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u6211\uff01\u540e\u9762\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u5185\u5bb9\u7684\uff0c\u5e0c\u671b\u90fd\u80fd\u5e2e\u5230\u6b63\u5728\u5b66\u4e60\u7684\u5927\u5bb6\uff01<\/p>\n

<\/p>\n

Java \u51fd\u6570\u5f0f\u63a5\u53e3\u5728\u5206\u5e03\u5f0f\u8ba1\u7b97\u4e2d\u7684\u5e94\u7528\u573a\u666f<\/strong><\/p>\n

\u5728\u5206\u5e03\u5f0f\u8ba1\u7b97\u4e2d\uff0c\u51fd\u6570\u5f0f\u63a5\u53e3\u88ab\u5e7f\u6cdb\u4f7f\u7528\uff0c\u56e0\u4e3a\u5b83\u63d0\u4f9b\u4e86\u7b80\u6d01\u9ad8\u6548\u7684\u673a\u5236\u6765\u5b9a\u4e49\u548c\u5904\u7406\u5206\u5e03\u5f0f\u4efb\u52a1\u3002<\/p>\n

\u4ec0\u4e48\u662f\u51fd\u6570\u5f0f\u63a5\u53e3\uff1f<\/strong><\/p>\n

Java \u51fd\u6570\u5f0f\u63a5\u53e3\u662f\u4e00\u79cd\u4ec5\u5305\u542b\u5355\u4e2a\u62bd\u8c61\u65b9\u6cd5\u7684\u63a5\u53e3\u3002\u8fd9\u79cd\u9650\u5236\u5141\u8bb8\u7f16\u8bd1\u5668\u5c06\u51fd\u6570\u5f0f\u63a5\u53e3\u5b9e\u73b0\u4e3a\u65b9\u6cd5\u53e5\u67c4\uff0c\u4ece\u800c\u63d0\u9ad8\u6267\u884c\u6548\u7387\u3002<\/p>\n

\u51fd\u6570\u5f0f\u63a5\u53e3\u5728\u5206\u5e03\u5f0f\u8ba1\u7b97\u4e2d\u7684\u5e94\u7528\u573a\u666f\uff1a<\/strong><\/p>\n

1. \u4e8b\u4ef6\u5904\u7406\uff1a<\/strong><\/p>\n

\u51fd\u6570\u5f0f\u63a5\u53e3\u53ef\u7528\u4e8e\u5b9a\u4e49\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u63a5\u6536\u548c\u5904\u7406\u4e8b\u4ef6\u7684\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u5728 Lambda \u8868\u8fbe\u5f0f\u4e2d\u5b9a\u4e49\u5904\u7406\u6d88\u606f\u961f\u5217\u4e2d\u7684\u6d88\u606f\u7684\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u3002<\/p>\n

import java.util.function.Consumer;\n\npublic class MessageHandler {\n\n    public static void main(String[] args) {\n        \/\/ \u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u4f5c\u4e3a\u51fd\u6570\u5f0f\u63a5\u53e3 Consumer<String> \u7684\u5b9e\u73b0\n        Consumer<String> consumer = (message) -> System.out.println(message);\n        \/\/ \u5c06\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u6ce8\u518c\u5230\u6d88\u606f\u961f\u5217\u4e0a\n        \/\/ ... \u7701\u7565\u90e8\u5206\u4ee3\u7801 ...\n        \/\/ \u5904\u7406\u4ece\u6d88\u606f\u961f\u5217\u63a5\u6536\u5230\u7684\u6d88\u606f\n        \/\/ ... \u7701\u7565\u90e8\u5206\u4ee3\u7801 ...\n    }\n}<\/pre>\n
2. \u5e76\u884c\u8ba1\u7b97\uff1a<\/strong><\/p>\n
\u51fd\u6570\u5f0f\u63a5\u53e3\u53ef\u7528\u4e8e\u5b9a\u4e49\u5e76\u884c\u6267\u884c\u7684\u8ba1\u7b97\u4efb\u52a1\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u5728 Scala \u4e2d\u5b9a\u4e49\u4e00\u4e2a\u4f7f\u7528 Java \u6267\u884c\u670d\u52a1\u7684\u5e76\u884c\u8ba1\u7b97\u4efb\u52a1\u3002<\/p>\n
import java.util.concurrent.ExecutorService\nimport java.util.function.IntFunction\n\n\/\/ \u5e76\u884c\u8ba1\u7b97\u4efb\u52a1\u4f5c\u4e3a\u51fd\u6570\u5f0f\u63a5\u53e3 IntFunction<Integer> \u7684\u5b9e\u73b0\nclass ParallelTask implements IntFunction<Integer> {\n\n    \/\/ ExecutorService \u7528\u4e8e\u7ba1\u7406\u5e76\u884c\u6267\u884c\n    private final ExecutorService executorService\n\n    public ParallelTask(ExecutorService executorService) {\n        this.executorService = executorService;\n    }\n\n    @Override\n    public Integer apply(int n) {\n        \/\/ ... \u5e76\u884c\u6267\u884c\u7684\u8ba1\u7b97\u4efb\u52a1 ...\n        return result;\n    }\n\n    public static void main(String[] args) {\n        \/\/ ... \u521d\u59cb\u5316 ExecutorService \u548c ParallelTask ...\n        \/\/ \u5e76\u884c\u6267\u884c\u8ba1\u7b97\u4efb\u52a1\n        \/\/ ... \u7701\u7565\u90e8\u5206\u4ee3\u7801 ...\n    }\n}<\/pre>\n
3. \u6d41\u5904\u7406\uff1a<\/strong><\/p>\n
\u51fd\u6570\u5f0f\u63a5\u53e3\u53ef\u7528\u4e8e\u5b9a\u4e49\u6d41\u5904\u7406\u7ba1\u9053\u4e2d\u7684\u8f6c\u6362\u64cd\u4f5c\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u5728 Java Stream API \u4e2d\u5b9a\u4e49\u6d41\u6570\u636e\u4e2d\u884c\u7684\u6620\u5c04\u64cd\u4f5c\u3002<\/p>\n
import java.util.stream.Stream;\n\npublic class StreamMapping {\n\n    public static void main(String[] args) {\n        \/\/ \u6d41\u6620\u5c04\u64cd\u4f5c\u4f5c\u4e3a\u51fd\u6570\u5f0f\u63a5\u53e3 Function<String, String> \u7684\u5b9e\u73b0\n        Function<String, String> mapper = (line) -> line.toUpperCase();\n        \/\/ \u5c06\u6620\u5c04\u64cd\u4f5c\u5e94\u7528\u5230\u6d41\u4e0a\n        Stream<String> result = Stream.of(\"a\", \"b\", \"c\").map(mapper);\n        \/\/ \u6253\u5370\u8f6c\u6362\u540e\u7684\u7ed3\u679c\n        result.forEach(System.out::println);\n    }\n}<\/pre>\n
\u901a\u8fc7\u8fd9\u4e9b\u793a\u4f8b\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230 Java \u51fd\u6570\u5f0f\u63a5\u53e3\u5982\u4f55\u5728\u5206\u5e03\u5f0f\u8ba1\u7b97\u4e2d\u53d1\u6325\u5173\u952e\u4f5c\u7528\uff0c\u5b9a\u4e49\u7b80\u7ec3\u3001\u9ad8\u6548\u7684\u5206\u5e03\u5f0f\u4efb\u52a1\uff0c\u6ee1\u8db3\u5404\u79cd\u5b9e\u9645\u5e94\u7528\u573a\u666f\u3002<\/p>\n
\u4eca\u5929\u5173\u4e8e\u300aJava\u51fd\u6570\u5f0f\u63a5\u53e3\u5728\u5206\u5e03\u5f0f\u8ba1\u7b97\u4e2d\u7684\u5e94\u7528\u573a\u666f\u300b\u7684\u5185\u5bb9\u5c31\u4ecb\u7ecd\u5230\u8fd9\u91cc\u4e86\uff0c\u662f\u4e0d\u662f\u5b66\u8d77\u6765\u4e00\u76ee\u4e86\u7136\uff01\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u5206\u5e03\u5f0f\u8ba1\u7b97,\u51fd\u6570\u5f0f\u63a5\u53e3\u7684\u5185\u5bb9\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
Java\u51fd\u6570\u5f0f\u63a5\u53e3\u5728\u5206\u5e03\u5f0f\u8ba1\u7b97\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-203001","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203001","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=203001"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203001\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=203001"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=203001"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=203001"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}