{"id":203100,"date":"2025-05-22T12:26:00","date_gmt":"2025-05-22T04:26:00","guid":{"rendered":"https:\/\/server.hk\/cnblog\/203100\/"},"modified":"2025-05-22T12:26:00","modified_gmt":"2025-05-22T04:26:00","slug":"java%e5%87%bd%e6%95%b0%e5%bc%8f%e7%bc%96%e7%a8%8b%e5%a6%82%e4%bd%95%e5%9c%a8%e5%a4%a7%e6%95%b0%e6%8d%ae%e5%a4%84%e7%90%86%e4%b8%ad%e5%ba%94%e7%94%a8%e4%ba%8e%e5%b9%b6%e8%a1%8c%e8%ae%a1%e7%ae%97","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/203100\/","title":{"rendered":"Java\u51fd\u6570\u5f0f\u7f16\u7a0b\u5982\u4f55\u5728\u5927\u6570\u636e\u5904\u7406\u4e2d\u5e94\u7528\u4e8e\u5e76\u884c\u8ba1\u7b97\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>Java\u51fd\u6570\u5f0f\u7f16\u7a0b\u5982\u4f55\u5728\u5927\u6570\u636e\u5904\u7406\u4e2d\u5e94\u7528\u4e8e\u5e76\u884c\u8ba1\u7b97\uff1f<\/h1>\n<p>\u5c0f\u4f19\u4f34\u4eec\u5bf9\u6587\u7ae0\u7f16\u7a0b\u611f\u5174\u8da3\u5417\uff1f\u662f\u5426\u6b63\u5728\u5b66\u4e60\u76f8\u5173\u77e5\u8bc6\u70b9\uff1f\u5982\u679c\u662f\uff0c\u90a3\u4e48\u672c\u6587\u300aJava\u51fd\u6570\u5f0f\u7f16\u7a0b\u5982\u4f55\u5728\u5927\u6570\u636e\u5904\u7406\u4e2d\u5e94\u7528\u4e8e\u5e76\u884c\u8ba1\u7b97\uff1f\u300b\uff0c\u5c31\u5f88\u9002\u5408\u4f60\uff0c\u672c\u7bc7\u6587\u7ae0\u8bb2\u89e3\u7684\u77e5\u8bc6\u70b9\u4e3b\u8981\u5305\u62ec\u3002\u5728\u4e4b\u540e\u7684\u6587\u7ae0\u4e2d\u4e5f\u4f1a\u591a\u591a\u5206\u4eab\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n<p>\u51fd\u6570\u5f0f\u7f16\u7a0b\u5728\u5927\u6570\u636e\u5904\u7406\u4e2d\u63d0\u4f9b\u4e86\u6709\u6548\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u901a\u8fc7\u4e0d\u53d8\u6027\u3001\u60f0\u6027\u6c42\u503c\u548c\u5e76\u884c\u8ba1\u7b97\u63d0\u5347\u6548\u7387\u3002\u5177\u4f53\u6b65\u9aa4\u5305\u62ec\uff1a\u4f7f\u7528Java 8\u4e2d\u7684\u6d41\u5f0fAPI\u8fdb\u884c\u7b80\u6d01\u6570\u636e\u5904\u7406\u3002\u91c7\u7528\u5ef6\u8fdf\u52a0\u8f7d\uff0c\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u8ba1\u7b97\u3002\u501f\u52a9\u6d41\u5f0fAPI\u7684parallel()\u65b9\u6cd5\u652f\u6301\u5e76\u884c\u8ba1\u7b97\uff0c\u5c06\u4efb\u52a1\u5206\u89e3\u5e76\u591a\u7ebf\u7a0b\u6267\u884c\u3002\u901a\u8fc7\u6848\u4f8b\u5c55\u793a\u51fd\u6570\u5f0f\u7f16\u7a0b\u548c\u5e76\u884c\u8ba1\u7b97\u5982\u4f55\u9ad8\u6548\u5b8c\u6210\u5927\u6570\u636e\u5206\u7ec4\u548c\u805a\u5408\u4efb\u52a1\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241028\/1730085708671f034c127ba.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>Java\u51fd\u6570\u5f0f\u7f16\u7a0b\u5728\u5927\u6570\u636e\u5e76\u884c\u5904\u7406\u4e2d\u7684\u5e94\u7528<\/strong><\/p>\n<p><strong>\u7b80\u4ecb<\/strong><\/p>\n<p>\u968f\u7740\u5927\u6570\u636e\u7684\u7206\u53d1\u5f0f\u589e\u957f\uff0c\u4f20\u7edf\u7684\u9ad8\u6027\u80fd\u8ba1\u7b97\u65b9\u6cd5\u5df2\u65e0\u6cd5\u6ee1\u8db3\u9ad8\u6548\u5904\u7406\u6d77\u91cf\u6570\u636e\u7684\u9700\u6c42\u3002\u51fd\u6570\u5f0f\u7f16\u7a0b\u4e3a\u5927\u6570\u636e\u5904\u7406\u63d0\u4f9b\u4e86\u65b0\u7684\u53ef\u80fd\uff0c\u5176\u901a\u8fc7\u4f7f\u7528\u4e0d\u53d8\u6027\u3001\u60f0\u6027\u6c42\u503c\u548c\u5e76\u884c\u8ba1\u7b97\u6765\u63d0\u5347\u5904\u7406\u6548\u7387\u3002<\/p>\n<p><strong>Java\u51fd\u6570\u5f0f\u7f16\u7a0b\u57fa\u7840<\/strong><\/p>\n<p>Java 8\u5f15\u5165\u6d41\u5f0fAPI\uff0c\u4f7f\u51fd\u6570\u5f0f\u7f16\u7a0b\u5728Java\u4e2d\u6210\u4e3a\u53ef\u80fd\u3002\u6d41\u5f0fAPI\u63d0\u4f9b\u4e86\u7b80\u6d01\u7684\u8bed\u6cd5\u6765\u5904\u7406\u6570\u636e\u96c6\u5408\uff0c\u5e76\u652f\u6301\u5404\u79cd\u64cd\u4f5c\uff0c\u5982\u6620\u5c04\u3001\u8fc7\u6ee4\u3001\u5f52\u7ea6\u7b49\u3002\u8fd9\u4e9b\u64cd\u4f5c\u91c7\u7528\u5ef6\u8fdf\u52a0\u8f7d\uff0c\u53ea\u6709\u5728\u9700\u8981\u65f6\u624d\u8ba1\u7b97\u7ed3\u679c\uff0c\u4ece\u800c\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u8ba1\u7b97\u3002<\/p>\n<p><strong>\u5e76\u884c\u8ba1\u7b97<\/strong><\/p>\n<p>Java\u51fd\u6570\u5f0f\u7f16\u7a0b\u652f\u6301\u5e76\u884c\u8ba1\u7b97\uff0c\u901a\u8fc7\u5c06\u4efb\u52a1\u5206\u89e3\u4e3a\u66f4\u5c0f\u7684\u90e8\u5206\u5e76\u540c\u65f6\u5728\u591a\u4e2a\u7ebf\u7a0b\u4e0a\u6267\u884c\uff0c\u4ece\u800c\u5927\u5e45\u5ea6\u63d0\u9ad8\u5904\u7406\u6548\u7387\u3002\u6d41\u5f0fAPI\u63d0\u4f9b<code>parallel()<\/code>\u65b9\u6cd5\u6765\u5e76\u884c\u5316\u6d41\u5f0f\u64cd\u4f5c\u3002<\/p>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p>\u8003\u8651\u4e00\u4e2a\u9700\u8981\u5bf9\u4e0a\u4ebf\u6761\u8bb0\u5f55\u8fdb\u884c\u5206\u7ec4\u548c\u805a\u5408\u7684\u5927\u6570\u636e\u5904\u7406\u4efb\u52a1\u3002\u4f20\u7edf\u7684\u9ad8\u6027\u80fd\u8ba1\u7b97\u65b9\u6cd5\u6d89\u53ca\u590d\u6742\u7684\u5e76\u884c\u7b97\u6cd5\uff0c\u800c\u51fd\u6570\u5f0f\u7f16\u7a0b\u63d0\u4f9b\u4e86\u4e00\u79cd\u66f4\u7b80\u6d01\u3001\u9ad8\u6548\u7684\u65b9\u5f0f\uff1a<\/p>\n<pre>import java.util.stream.Stream;\n\npublic class WordCount {\n    public static void main(String[] args) {\n        Stream&lt;String&gt; words = Stream.of(\"hello\", \"world\", \"java\", \"programming\");\n\n        words.parallel()\n                .map(String::toUpperCase)\n                .collect(Collectors.groupingBy(Function.identity(), Collectors.counting()))\n                .forEach((word, count) -&gt; System.out.println(word + \": \" + count));\n    }\n}<\/pre>\n<p>\u5728\u8fd9\u6bb5\u4ee3\u7801\u4e2d\uff1a<\/p>\n<ul>\n<li>\u6d41\u5f0f\u64cd\u4f5c<code>parallel()<\/code>\u542f\u7528\u5e76\u884c\u5904\u7406\u3002<\/li>\n<li><code>map<\/code>\u64cd\u4f5c\u5c06\u6bcf\u4e2a\u5355\u8bcd\u8f6c\u6362\u4e3a\u5927\u5199\u5f62\u5f0f\u3002<\/li>\n<li><code>groupingBy<\/code>\u548c<code>counting<\/code>\u64cd\u4f5c\u5206\u7ec4\u5355\u8bcd\u5e76\u8ba1\u7b97\u6bcf\u4e2a\u5355\u8bcd\u7684\u51fa\u73b0\u6b21\u6570\u3002<\/li>\n<li><code>forEach<\/code>\u64cd\u4f5c\u6253\u5370\u5206\u7ec4\u7ed3\u679c\u3002<\/li>\n<\/ul>\n<p>\u4f7f\u7528\u51fd\u6570\u5f0f\u7f16\u7a0b\u548c\u5e76\u884c\u8ba1\u7b97\uff0c\u5373\u4f7f\u662f\u5927\u6570\u636e\u5904\u7406\u4efb\u52a1\u4e5f\u53ef\u4ee5\u9ad8\u6548\u5730\u5b8c\u6210\u3002<\/p>\n<p>\u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300aJava\u51fd\u6570\u5f0f\u7f16\u7a0b\u5982\u4f55\u5728\u5927\u6570\u636e\u5904\u7406\u4e2d\u5e94\u7528\u4e8e\u5e76\u884c\u8ba1\u7b97\uff1f\u300b\uff0c\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff01\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u7ed9\u5927\u5bb6\u5206\u4eab\u66f4\u591a\u6587\u7ae0\u77e5\u8bc6\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java\u51fd\u6570\u5f0f\u7f16\u7a0b\u5982\u4f55\u5728\u5927\u6570\u636e\u5904&#46;&#46;&#46;<\/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-203100","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203100","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=203100"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203100\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=203100"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=203100"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=203100"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}