{"id":202939,"date":"2025-05-22T09:23:02","date_gmt":"2025-05-22T01:23:02","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202939\/"},"modified":"2025-05-22T09:23:02","modified_gmt":"2025-05-22T01:23:02","slug":"java%e5%87%bd%e6%95%b0%e5%bc%8f%e6%8e%a5%e5%8f%a3%e5%9c%a8%e5%b9%b6%e8%a1%8c%e7%bc%96%e7%a8%8b%e4%b8%ad%e7%9a%84%e5%ae%9e%e6%88%98","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202939\/","title":{"rendered":"Java\u51fd\u6570\u5f0f\u63a5\u53e3\u5728\u5e76\u884c\u7f16\u7a0b\u4e2d\u7684\u5b9e\u6218"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>Java\u51fd\u6570\u5f0f\u63a5\u53e3\u5728\u5e76\u884c\u7f16\u7a0b\u4e2d\u7684\u5b9e\u6218<\/h1>\n<p>IT\u884c\u4e1a\u76f8\u5bf9\u4e8e\u4e00\u822c\u4f20\u7edf\u884c\u4e1a\uff0c\u53d1\u5c55\u66f4\u65b0\u901f\u5ea6\u66f4\u5feb\uff0c\u4e00\u65e6\u505c\u6b62\u4e86\u5b66\u4e60\uff0c\u5f88\u5feb\u5c31\u4f1a\u88ab\u884c\u4e1a\u6240\u6dd8\u6c70\u3002\u6240\u4ee5\u6211\u4eec\u9700\u8981\u8e0f\u8e0f\u5b9e\u5b9e\u7684\u4e0d\u65ad\u5b66\u4e60\uff0c\u7cbe\u8fdb\u81ea\u5df1\u7684\u6280\u672f\uff0c\u5c24\u5176\u662f\u521d\u5b66\u8005\u3002\u4eca\u5929\u7ed9\u5927\u5bb6\u6574\u7406\u4e86\u300aJava\u51fd\u6570\u5f0f\u63a5\u53e3\u5728\u5e76\u884c\u7f16\u7a0b\u4e2d\u7684\u5b9e\u6218\u300b\uff0c\u804a\u804a\uff0c\u6211\u4eec\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241027\/1730001997671dbc4d0199e.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>Java \u51fd\u6570\u5f0f\u63a5\u53e3\u5728\u5e76\u884c\u7f16\u7a0b\u4e2d\u7684\u5b9e\u6218<\/strong><\/p>\n<p>Java \u4e2d\u7684\u51fd\u6570\u5f0f\u63a5\u53e3\u4e3a\u5e76\u884c\u7f16\u7a0b\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u5de5\u5177\u3002\u901a\u8fc7\u5c06\u590d\u6742\u4efb\u52a1\u5206\u89e3\u6210\u8f83\u5c0f\u7684\u3001\u53ef\u5e76\u884c\u6267\u884c\u7684\u90e8\u5206\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u591a\u6838\u7cfb\u7edf\u4e2d\u663e\u8457\u63d0\u9ad8\u4ee3\u7801\u6548\u7387\u3002<\/p>\n<p><strong>\u51fd\u6570\u5f0f\u63a5\u53e3<\/strong><\/p>\n<p>\u51fd\u6570\u5f0f\u63a5\u53e3\u662f\u4e00\u79cd\u53ea\u5305\u542b\u4e00\u4e2a\u62bd\u8c61\u65b9\u6cd5\u7684\u63a5\u53e3\u3002\u5728 Java 8 \u4e2d\u5f15\u5165\u4e86 <code>Predicate<\/code>\u3001<code>Function<\/code> \u548c <code>Consumer<\/code> \u7b49\u5185\u7f6e\u51fd\u6570\u5f0f\u63a5\u53e3\u3002\u8fd9\u4e9b\u63a5\u53e3\u5141\u8bb8\u6211\u4eec\u5c06\u4ee3\u7801\u5757\u8868\u793a\u4e3a\u5bf9\u8c61\uff0c\u4ece\u800c\u53ef\u4ee5\u8f7b\u677e\u5730\u4f20\u9012\u548c\u6267\u884c\u5b83\u4eec\u3002<\/p>\n<p><strong>\u5e76\u884c\u6d41<\/strong><\/p>\n<p>Java 8 \u4e2d\u7684\u5e76\u884c\u6d41\u63d0\u4f9b\u4e86\u5728\u591a\u6838\u7cfb\u7edf\u4e0a\u5e76\u884c\u6267\u884c\u64cd\u4f5c\u7684\u6846\u67b6\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 <code>parallel()<\/code> \u65b9\u6cd5\u5c06\u4f20\u7edf\u6d41\u8f6c\u6362\u4e3a\u5e76\u884c\u6d41\u3002\u5e76\u884c\u6d41\u4f1a\u5728\u5e95\u5c42\u81ea\u52a8\u5c06\u4efb\u52a1\u5212\u5206\u4e3a\u8f83\u5c0f\u7684\u90e8\u5206\uff0c\u5e76\u5728\u591a\u4e2a\u7ebf\u7a0b\u4e0a\u6267\u884c\u5b83\u4eec\u3002<\/p>\n<p><strong>\u5b9e\u6218\u6848\u4f8b\uff1a\u5355\u8bcd\u8ba1\u6570<\/strong><\/p>\n<p>\u8ba9\u6211\u4eec\u901a\u8fc7\u4e00\u4e2a\u5355\u8bcd\u8ba1\u6570\u7684\u5b9e\u6218\u6848\u4f8b\u6765\u4e86\u89e3\u5982\u4f55\u4f7f\u7528\u51fd\u6570\u5f0f\u63a5\u53e3\u548c\u5e76\u884c\u6d41\u8fdb\u884c\u5e76\u884c\u7f16\u7a0b\uff1a<\/p>\n<pre>import java.util.stream.Stream;\n\npublic class WordCount {\n\n    public static void main(String[] args) {\n        \/\/ \u521b\u5efa\u4e00\u4e2a\u5b57\u7b26\u4e32\u6d41\n        Stream&lt;String&gt; words = Stream.of(\"Hello\", \"world\", \"this\", \"is\", \"a\", \"simple\", \"example\");\n\n        \/\/ \u4f7f\u7528\u5e76\u884c\u6d41\u5e76\u5e94\u7528\u5355\u8bcd\u8ba1\u6570\u64cd\u4f5c\n        long wordCount = words\n                .parallel()\n                .filter(Predicate.not(String::isEmpty)) \/\/ \u8fc7\u6ee4\u7a7a\u5b57\u7b26\u4e32\n                .map(Function.identity()) \/\/ \u4fdd\u7559\u539f\u59cb\u5b57\u7b26\u4e32\n                .count();\n\n        \/\/ \u6253\u5370\u5355\u8bcd\u8ba1\u6570\n        System.out.println(\"Word count: \" + wordCount);\n    }\n}<\/pre>\n<p>\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528 <code>parallel()<\/code> \u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u5e76\u884c\u6d41\uff0c\u7136\u540e\u4f7f\u7528 <code>filter()<\/code> \u548c <code>map()<\/code> \u7b49\u51fd\u6570\u5f0f\u63a5\u53e3\u6267\u884c\u8fc7\u6ee4\u5668\u548c\u6620\u5c04\u64cd\u4f5c\u3002\u6700\u540e\uff0c\u901a\u8fc7 <code>count()<\/code> \u65b9\u6cd5\u8ba1\u7b97\u6d41\u4e2d\u5143\u7d20\u7684\u6570\u91cf\u5e76\u6253\u5370\u5355\u8bcd\u8ba1\u6570\u3002<\/p>\n<p>\u4f7f\u7528\u5e76\u884c\u6d41\uff0c\u6b64\u4ee3\u7801\u53ef\u4ee5\u5728\u591a\u6838\u7cfb\u7edf\u4e0a\u663e\u7740\u63d0\u9ad8\u5355\u8bcd\u8ba1\u6570\u7684\u6027\u80fd\uff0c\u56e0\u4e3a\u5b83\u5e76\u53d1\u6267\u884c\u64cd\u4f5c\u3002<\/p>\n<p>\u672c\u7bc7\u5173\u4e8e\u300aJava\u51fd\u6570\u5f0f\u63a5\u53e3\u5728\u5e76\u884c\u7f16\u7a0b\u4e2d\u7684\u5b9e\u6218\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":"<p>Java\u51fd\u6570\u5f0f\u63a5\u53e3\u5728\u5e76\u884c\u7f16\u7a0b\u4e2d\u7684&#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-202939","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202939","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=202939"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202939\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202939"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202939"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202939"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}