{"id":202995,"date":"2025-05-22T12:22:51","date_gmt":"2025-05-22T04:22:51","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202995\/"},"modified":"2025-05-22T12:22:51","modified_gmt":"2025-05-22T04:22:51","slug":"%e9%ab%98%e9%98%b6%e5%87%bd%e6%95%b0%e5%9c%a8-java-%e4%b8%ad%e5%ae%9e%e7%8e%b0%e9%93%be%e5%bc%8f%e7%bc%96%e7%a8%8b%e7%9a%84%e4%bc%98%e5%8a%bf","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202995\/","title":{"rendered":"\u9ad8\u9636\u51fd\u6570\u5728 Java \u4e2d\u5b9e\u73b0\u94fe\u5f0f\u7f16\u7a0b\u7684\u4f18\u52bf"},"content":{"rendered":"

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

\u9ad8\u9636\u51fd\u6570\u5728 Java \u4e2d\u5b9e\u73b0\u94fe\u5f0f\u7f16\u7a0b\u7684\u4f18\u52bf<\/h1>\n

\u6765\u5230\u7684\u5927\u5bb6\uff0c\u76f8\u4fe1\u90fd\u662f\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5e0c\u671b\u5728\u8fd9\u91cc\u5b66\u4e60\u6587\u7ae0\u76f8\u5173\u7f16\u7a0b\u77e5\u8bc6\u3002\u4e0b\u9762\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u5e26\u5927\u5bb6\u804a\u804a\u300a\u9ad8\u9636\u51fd\u6570\u5728 Java \u4e2d\u5b9e\u73b0\u94fe\u5f0f\u7f16\u7a0b\u7684\u4f18\u52bf\u300b\uff0c\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01<\/p>\n

\u94fe\u5f0f\u7f16\u7a0b\u901a\u8fc7\u9ad8\u9636\u51fd\u6570\u589e\u5f3a\uff0c\u9ad8\u9636\u51fd\u6570\u5141\u8bb8\u5c06\u51fd\u6570\u4f5c\u4e3a\u6570\u636e\u7ed3\u6784\u5904\u7406\uff0c\u8fde\u63a5\u64cd\u4f5c\u5982\u540c\u7ba1\u9053\u822c\u3002\u5176\u4f18\u52bf\u5305\u62ec\u9ad8\u53ef\u8bfb\u6027\u3001\u53ef\u6269\u5c55\u6027\u3001\u53ef\u91cd\u7528\u6027\u548c\u7075\u6d3b\u6027\uff0c\u4f7f\u4ee3\u7801\u66f4\u6e05\u6670\u3001\u6613\u6269\u5c55\u3001\u53ef\u91cd\u7528\u4e14\u7075\u6d3b\u3002<\/p>\n

<\/p>\n

\u9ad8\u9636\u51fd\u6570\u5728 Java \u4e2d\u5b9e\u73b0\u94fe\u5f0f\u7f16\u7a0b\u7684\u4f18\u52bf<\/strong><\/p>\n

\u5f15\u8a00<\/strong><\/p>\n

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\u9ad8\u9636\u51fd\u6570\u7684\u6982\u5ff5<\/strong><\/p>\n

\u9ad8\u9636\u51fd\u6570\u662f\u63a5\u53d7\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570\u6216\u8fd4\u56de\u503c\u7684\u51fd\u6570\u3002\u8fd9\u4f7f\u5f97\u5f00\u53d1\u8005\u53ef\u4ee5\u5c06\u51fd\u6570\u4f5c\u4e3a\u4e00\u79cd\u6570\u636e\u7ed3\u6784\u6765\u5904\u7406\uff0c\u4ece\u800c\u521b\u5efa\u7075\u6d3b\u4e14\u53ef\u6269\u5c55\u7684\u4ee3\u7801\u3002<\/p>\n

\u94fe\u5f0f\u7f16\u7a0b\u4e2d\u7684\u9ad8\u9636\u51fd\u6570<\/strong><\/p>\n

\u5728\u94fe\u5f0f\u7f16\u7a0b\u4e2d\uff0c\u9ad8\u9636\u51fd\u6570\u5141\u8bb8\u5f00\u53d1\u8005\u5c06\u64cd\u4f5c\u8fde\u63a5\u5728\u4e00\u8d77\uff0c\u5c31\u50cf\u8fde\u63a5\u7ba1\u9053\u4e00\u6837\u3002\u6bcf\u4e2a\u51fd\u6570\u90fd\u4ece\u524d\u4e00\u4e2a\u51fd\u6570\u63a5\u6536\u7ed3\u679c\uff0c\u5e76\u5c06\u5176\u4f5c\u4e3a\u81ea\u5df1\u7684\u8f93\u5165\u8fdb\u884c\u5904\u7406\u3002\u8fd9\u79cd\u65b9\u6cd5\u521b\u5efa\u4e86\u4e00\u6761\u64cd\u4f5c\u5e8f\u5217\uff0c\u53ef\u4ee5\u5728\u5355\u884c\u4ee3\u7801\u4e2d\u5b8c\u6210\u590d\u6742\u7684\u64cd\u4f5c\u3002<\/p>\n

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

\u8003\u8651\u4ee5\u4e0b\u793a\u4f8b\uff0c\u6211\u4eec\u4ece\u5217\u8868\u4e2d\u8fc7\u6ee4\u5076\u6570\u7136\u540e\u8ba1\u7b97\u603b\u548c\uff1a<\/p>\n

import java.util.*;\n\npublic class ChainExample {\n\n    public static void main(String[] args) {\n        List<Integer> numbers = Arrays.asList(1, 2, 3, 4, 5, 6, 7, 8);\n\n        \/\/ \u4f7f\u7528\u94fe\u5f0f\u7f16\u7a0b\u8ba1\u7b97\u5076\u6570\u7684\u603b\u548c\n        int sum = numbers.stream()\n                .filter(n -> n % 2 == 0)\n                .mapToInt(n -> n)\n                .sum();\n\n        System.out.println(sum); \/\/ \u8f93\u51fa\uff1a20\n    }\n}<\/pre>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0cfilter()<\/code> \u9ad8\u9636\u51fd\u6570\u7528\u4e8e\u4ece\u5217\u8868\u4e2d\u8fc7\u6ee4\u5076\u6570\uff0cmapToInt()<\/code> \u9ad8\u9636\u51fd\u6570\u5c06\u8fc7\u6ee4\u540e\u7684\u503c\u8f6c\u6362\u4e3a int\uff0c\u6700\u540e sum()<\/code> \u65b9\u6cd5\u8ba1\u7b97\u603b\u548c\u3002<\/p>\n
\u9ad8\u9636\u51fd\u6570\u7684\u4f18\u52bf<\/strong><\/p>\n
\u4f7f\u7528\u9ad8\u9636\u51fd\u6570\u5b9e\u73b0\u94fe\u5f0f\u7f16\u7a0b\u63d0\u4f9b\u4e86\u8bb8\u591a\u4f18\u52bf\uff1a<\/p>\n
    \n
  • \u53ef\u8bfb\u6027\uff1a<\/strong>\u94fe\u5f0f\u7f16\u7a0b\u4ee3\u7801\u6613\u4e8e\u9605\u8bfb\u548c\u7406\u89e3\uff0c\u56e0\u4e3a\u5b83\u5c06\u64cd\u4f5c\u660e\u786e\u5730\u6392\u5217\u6210\u4e00\u6761\u94fe\u3002<\/li>\n
  • \u53ef\u6269\u5c55\u6027\uff1a<\/strong>\u53ef\u4ee5\u8f7b\u677e\u5730\u6dfb\u52a0\u6216\u5220\u9664\u64cd\u4f5c\uff0c\u800c\u65e0\u9700\u91cd\u5199\u6574\u4e2a\u4ee3\u7801\u3002<\/li>\n
  • \u53ef\u91cd\u7528\u6027\uff1a<\/strong>\u9ad8\u9636\u51fd\u6570\u662f\u53ef\u91cd\u7528\u7684\u4ee3\u7801\u5757\uff0c\u53ef\u4ee5\u5728\u4e0d\u540c\u7684\u573a\u666f\u4e2d\u91cd\u590d\u4f7f\u7528\u3002<\/li>\n
  • \u7075\u6d3b\u6027\uff1a<\/strong>\u901a\u8fc7\u7ec4\u5408\u4e0d\u540c\u7684\u9ad8\u9636\u51fd\u6570\uff0c\u53ef\u4ee5\u521b\u5efa\u590d\u6742\u4e14\u5f3a\u5927\u7684\u5904\u7406\u7ba1\u9053\u3002<\/li>\n<\/ul>\n
    \u7ed3\u8bba<\/strong><\/p>\n
    \u5728 Java \u4e2d\u4f7f\u7528\u9ad8\u9636\u51fd\u6570\u5b9e\u73b0\u94fe\u5f0f\u7f16\u7a0b\u662f\u4e00\u79cd\u6709\u6548\u4e14\u5f3a\u5927\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u521b\u5efa\u53ef\u8bfb\u3001\u53ef\u6269\u5c55\u548c\u53ef\u91cd\u7528\u7684\u4ee3\u7801\u3002\u901a\u8fc7\u4e86\u89e3\u9ad8\u9636\u51fd\u6570\u7684\u6982\u5ff5\u53ca\u5176\u5728\u94fe\u5f0f\u7f16\u7a0b\u4e2d\u7684\u5e94\u7528\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u8d28\u91cf\u5e76\u7b80\u5316\u6570\u636e\u64cd\u4f5c\u3002<\/p>\n
    \u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300a\u9ad8\u9636\u51fd\u6570\u5728 Java \u4e2d\u5b9e\u73b0\u94fe\u5f0f\u7f16\u7a0b\u7684\u4f18\u52bf\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8\u516c\u4f17\u53f7\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u9ad8\u9636\u51fd\u6570\u5728 Java \u4e2d\u5b9e\u73b0\u94fe\u5f0f...<\/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-202995","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202995","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=202995"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202995\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202995"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202995"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202995"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}