{"id":202744,"date":"2025-05-22T08:29:01","date_gmt":"2025-05-22T00:29:01","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202744\/"},"modified":"2025-05-22T08:29:01","modified_gmt":"2025-05-22T00:29:01","slug":"%e5%9c%a8-java-%e4%b8%ad%e5%87%bd%e6%95%b0%e5%bc%8f%e7%bc%96%e7%a8%8b%e8%8c%83%e5%bc%8f%e7%9a%84%e4%bc%98%e5%8a%bf%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202744\/","title":{"rendered":"\u5728 Java \u4e2d\u51fd\u6570\u5f0f\u7f16\u7a0b\u8303\u5f0f\u7684\u4f18\u52bf\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"

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

\u5728 Java \u4e2d\u51fd\u6570\u5f0f\u7f16\u7a0b\u8303\u5f0f\u7684\u4f18\u52bf\u662f\u4ec0\u4e48\uff1f<\/h1>\n

\u5bf9\u4e8e\u4e00\u4e2a\u6587\u7ae0\u5f00\u53d1\u8005\u6765\u8bf4\uff0c\u7262\u56fa\u624e\u5b9e\u7684\u57fa\u7840\u662f\u5341\u5206\u91cd\u8981\u7684\uff0c\u5c31\u6765\u5e26\u5927\u5bb6\u4e00\u70b9\u70b9\u7684\u638c\u63e1\u57fa\u7840\u77e5\u8bc6\u70b9\u3002\u4eca\u5929\u672c\u7bc7\u6587\u7ae0\u5e26\u5927\u5bb6\u4e86\u89e3\u300a\u5728 Java \u4e2d\u51fd\u6570\u5f0f\u7f16\u7a0b\u8303\u5f0f\u7684\u4f18\u52bf\u662f\u4ec0\u4e48\uff1f\u300b\uff0c\u4e3b\u8981\u4ecb\u7ecd\u4e86\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u5feb\u70b9\u6536\u85cf\u8d77\u6765\u5427\uff0c\u5426\u5219\u9700\u8981\u65f6\u5c31\u627e\u4e0d\u5230\u4e86\uff01<\/p>\n

Java \u4e2d\u51fd\u6570\u5f0f\u7f16\u7a0b\u7684\u4f18\u52bf\u5305\u62ec\uff1a\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\uff1a\u5c06\u4ee3\u7801\u5206\u89e3\u4e3a\u8f83\u5c0f\u7684\u51fd\u6570\uff0c\u6bcf\u4e2a\u51fd\u6570\u53ea\u505a\u4e00\u4ef6\u4e8b\uff0c\u4ece\u800c\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u7406\u89e3\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002\u5e76\u884c\u6027\uff1a\u51fd\u6570\u4e0d\u53ef\u53d8\uff0c\u56e0\u6b64\u53ef\u4ee5\u5728\u4e0d\u4ea7\u751f\u526f\u4f5c\u7528\u7684\u60c5\u51b5\u4e0b\u5e76\u884c\u6267\u884c\uff0c\u63d0\u4f9b\u5929\u7136\u7684\u5e76\u884c\u6027\u3002\u51cf\u5c11\u9519\u8bef\uff1a\u6d88\u9664\u53ef\u53d8\u72b6\u6001\u548c\u526f\u4f5c\u7528\uff0c\u4f7f\u7528\u7eaf\u51fd\u6570\uff0c\u907f\u514d\u4e0d\u53ef\u9884\u6d4b\u7684\u884c\u4e3a\uff0c\u4ece\u800c\u51cf\u5c11\u9519\u8bef\u3002\u53ef\u6d4b\u8bd5\u6027\uff1a\u8f93\u5165\u548c\u8f93\u51fa\u660e\u786e\uff0c\u6ca1\u6709\u526f\u4f5c\u7528\u4f1a\u5f71\u54cd\u6d4b\u8bd5\u7ed3\u679c\uff0c\u4f7f\u51fd\u6570\u5f0f\u4ee3\u7801\u6613\u4e8e\u6d4b\u8bd5\u3002\u4ee3\u7801\u91cd\u7528\uff1a\u5f3a\u8c03\u51fd\u6570\u7ec4\u5408\uff0c\u901a\u8fc7\u5c06\u8f83\u5c0f\u7684\u51fd\u6570\u7ec4\u5408\u5728\u4e00\u8d77\uff0c\u53ef\u4ee5\u8f7b\u677e\u521b\u5efa\u66f4\u590d\u6742\u7684\u529f\u80fd\uff0c\u63d0\u9ad8\u4ee3\u7801\u91cd\u7528\u6027\u3002<\/p>\n

<\/p>\n

Java \u4e2d\u51fd\u6570\u5f0f\u7f16\u7a0b\u8303\u5f0f\u7684\u4f18\u52bf<\/strong><\/p>\n

\u7b80\u4ecb<\/strong>
\u51fd\u6570\u5f0f\u7f16\u7a0b\u662f\u4e00\u79cd\u7f16\u7a0b\u8303\u5f0f\uff0c\u5b83\u5f3a\u8c03\u4e0d\u53ef\u53d8\u6027\u3001\u7eaf\u51fd\u6570\u548c\u61d2\u60f0\u6c42\u503c\u3002\u5728 Java \u4e2d\uff0c\u51fd\u6570\u5f0f\u7f16\u7a0b\u53ef\u4ee5\u901a\u8fc7\u51fd\u6570\u63a5\u53e3\u548c Lambda \u8868\u8fbe\u5f0f\u6765\u5b9e\u73b0\u3002<\/p>\n

\u4f18\u52bf<\/strong><\/p>\n

1. \u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027<\/strong>
\u51fd\u6570\u5f0f\u4ee3\u7801\u53ef\u4ee5\u5f88\u5bb9\u6613\u5730\u5206\u89e3\u6210\u8f83\u5c0f\u7684\u51fd\u6570\uff0c\u6bcf\u4e2a\u51fd\u6570\u53ea\u505a\u4e00\u4ef6\u4e8b\u3002\u8fd9\u4f7f\u5f97\u4ee3\u7801\u66f4\u5bb9\u6613\u7406\u89e3\u548c\u7ef4\u62a4\u3002<\/p>\n

2. \u5e76\u884c\u6027<\/strong>
\u51fd\u6570\u5f0f\u7f16\u7a0b\u63d0\u4f9b\u4e86\u5929\u7136\u7684\u5e76\u884c\u6027\u3002\u7531\u4e8e\u51fd\u6570\u662f\u4e0d\u53ef\u53d8\u7684\uff0c\u5b83\u4eec\u53ef\u4ee5\u5728\u4e0d\u4ea7\u751f\u526f\u4f5c\u7528\u7684\u60c5\u51b5\u4e0b\u5e76\u884c\u6267\u884c\u3002<\/p>\n

3. \u51cf\u5c11\u9519\u8bef<\/strong>
\u51fd\u6570\u5f0f\u7f16\u7a0b\u6d88\u9664\u4e86\u8bb8\u591a\u5e38\u89c1\u7684\u9519\u8bef\u6765\u6e90\uff0c\u4f8b\u5982\u53ef\u53d8\u72b6\u6001\u548c\u526f\u4f5c\u7528\u3002\u901a\u8fc7\u4f7f\u7528\u7eaf\u51fd\u6570\uff0c\u53ef\u4ee5\u907f\u514d\u4e0d\u53ef\u9884\u6d4b\u7684\u884c\u4e3a\u3002<\/p>\n

4. \u53ef\u6d4b\u8bd5\u6027<\/strong>
\u51fd\u6570\u5f0f\u4ee3\u7801\u5f88\u5bb9\u6613\u6d4b\u8bd5\uff0c\u56e0\u4e3a\u8f93\u5165\u548c\u8f93\u51fa\u90fd\u662f\u660e\u786e\u7684\uff0c\u5e76\u4e14\u6ca1\u6709\u526f\u4f5c\u7528\u4f1a\u5f71\u54cd\u6d4b\u8bd5\u7ed3\u679c\u3002<\/p>\n

5. \u4ee3\u7801\u91cd\u7528<\/strong>
\u51fd\u6570\u5f0f\u7f16\u7a0b\u9f13\u52b1\u4ee3\u7801\u91cd\u7528\uff0c\u56e0\u4e3a\u5b83\u5f3a\u8c03\u51fd\u6570\u7ec4\u5408\u3002\u901a\u8fc7\u5c06\u8f83\u5c0f\u7684\u51fd\u6570\u7ec4\u5408\u5728\u4e00\u8d77\uff0c\u53ef\u4ee5\u8f7b\u677e\u521b\u5efa\u66f4\u590d\u6742\u7684\u529f\u80fd\u3002<\/p>\n

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

\u8ba9\u6211\u4eec\u8003\u8651\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\uff1a\u8ba1\u7b97\u4e00\u4e2a\u5217\u8868\u4e2d\u6240\u6709\u5143\u7d20\u7684\u603b\u548c\u3002\u4f7f\u7528\u4f20\u7edf\u7684\u65b9\u6cd5\uff1a<\/p>\n

int sum = 0;\nfor (int num : nums) {\n    sum += num;\n}<\/pre>\n
\u800c\u4f7f\u7528\u51fd\u6570\u5f0f\u7f16\u7a0b\uff1a<\/p>\n
int sum = nums.stream()\n              .mapToInt(Integer::intValue)\n              .sum();<\/pre>\n
\u51fd\u6570\u5f0f\u65b9\u6cd5\u66f4\u7b80\u6d01\u3001\u66f4\u4e0d\u6613\u51fa\u9519\uff0c\u56e0\u4e3a\u5b83\u907f\u514d\u4e86\u53ef\u53d8\u6027\u5e76\u5229\u7528\u4e86\u6d41\u7684\u5e76\u884c\u529f\u80fd\u3002<\/p>\n
\u7ed3\u8bba<\/strong>
\u51fd\u6570\u5f0f\u7f16\u7a0b\u8303\u5f0f\u4e3a Java \u63d0\u4f9b\u4e86\u8bb8\u591a\u4f18\u52bf\uff0c\u5305\u62ec\u53ef\u8bfb\u6027\u3001\u53ef\u7ef4\u62a4\u6027\u3001\u5e76\u884c\u6027\u3001\u51cf\u5c11\u9519\u8bef\u548c\u4ee3\u7801\u91cd\u7528\u3002\u901a\u8fc7\u51fd\u6570\u63a5\u53e3\u548c Lambda \u8868\u8fbe\u5f0f\uff0cJava \u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u5145\u5206\u5229\u7528\u8fd9\u4e9b\u4f18\u52bf\uff0c\u4ece\u800c\u7f16\u5199\u51fa\u66f4\u9ad8\u8d28\u91cf\u3001\u66f4\u5065\u58ee\u7684\u4ee3\u7801\u3002<\/p>\n
\u672c\u7bc7\u5173\u4e8e\u300a\u5728 Java \u4e2d\u51fd\u6570\u5f0f\u7f16\u7a0b\u8303\u5f0f\u7684\u4f18\u52bf\u662f\u4ec0\u4e48\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":"
\u5728 Java \u4e2d\u51fd\u6570\u5f0f\u7f16\u7a0b\u8303\u5f0f\u7684...<\/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-202744","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202744","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=202744"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202744\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202744"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202744"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202744"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}