{"id":66658,"date":"2025-05-03T17:42:39","date_gmt":"2025-05-03T09:42:39","guid":{"rendered":"https:\/\/fwq.ai\/blog\/66658\/"},"modified":"2025-05-03T17:42:39","modified_gmt":"2025-05-03T09:42:39","slug":"java-%e6%80%8e%e4%b9%88%e6%b1%82%e6%95%b0%e7%bb%84%e5%86%85%e7%9a%84%e4%b8%aa%e6%95%b0%e5%ad%97-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/66658\/","title":{"rendered":"java \u600e\u4e48\u6c42\u6570\u7ec4\u5185\u7684\u4e2a\u6570\u5b57"},"content":{"rendered":"<blockquote><p>\n  \u5728 java \u4e2d\u6c42\u6570\u7ec4\u6570\u5b57\u4e4b\u548c\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528\u5faa\u73af\u9010\u4e2a\u76f8\u52a0\uff1a\u4f7f\u7528 arrays.stream() \u65b9\u6cd5\u8f6c\u6362\u6210\u6d41\u5bf9\u8c61\u5e76\u6c42\u548c\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/16\/2024111612100979630.jpg\" class=\"aligncenter\" title=\"java \u600e\u4e48\u6c42\u6570\u7ec4\u5185\u7684\u4e2a\u6570\u5b57\u63d2\u56fe\" alt=\"java \u600e\u4e48\u6c42\u6570\u7ec4\u5185\u7684\u4e2a\u6570\u5b57\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u6c42\u6570\u7ec4\u5185\u6570\u5b57\u4e4b\u548c<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\u6216\u5185\u7f6e\u51fd\u6570\u6765\u6c42\u6570\u7ec4\u4e2d\u6570\u5b57\u4e4b\u548c\u3002<\/p>\n<p><strong>\u5faa\u73af\u65b9\u5f0f<\/strong><\/p>\n<p>\u4f7f\u7528\u5faa\u73af\u7684\u65b9\u5f0f\u6c42\u548c\u662f\u6700\u76f4\u63a5\u7684\u65b9\u6cd5\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] numbers = {1, 2, 3, 4, 5};\nint sum = 0;\nfor (int number : numbers) {\n    sum += number;\n}\nSystem.out.println(sum); \/\/ \u8f93\u51fa: 15<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u5185\u7f6e\u51fd\u6570\u65b9\u5f0f<\/strong><\/p>\n<p>Java \u63d0\u4f9b\u4e86 Arrays.stream() \u65b9\u6cd5\uff0c\u53ef\u4ee5\u5c06\u6570\u7ec4\u8f6c\u6362\u6210\u6d41\u5bf9\u8c61\uff0c\u7136\u540e\u4f7f\u7528 sum() \u65b9\u6cd5\u6c42\u548c\uff1a<\/p>\n<pre>int[] numbers = {1, 2, 3, 4, 5};\nint sum = Arrays.stream(numbers).sum();\nSystem.out.println(sum); \/\/ \u8f93\u51fa: 15<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u6ce8\u610f\u4e8b\u9879<\/strong><\/p>\n<ul>\n<li>\u5982\u679c\u6570\u7ec4\u4e3a\u7a7a\uff0c\u5219\u5faa\u73af\u65b9\u5f0f\u8fd4\u56de 0\uff0c\u800c\u5185\u7f6e\u51fd\u6570\u65b9\u5f0f\u4f1a\u629b\u51fa NullPointerException \u5f02\u5e38\u3002\u56e0\u6b64\uff0c\u5728\u4f7f\u7528\u5185\u7f6e\u51fd\u6570\u65b9\u5f0f\u4e4b\u524d\uff0c\u6700\u597d\u5148\u68c0\u67e5\u6570\u7ec4\u662f\u5426\u4e3a\u7a7a\u3002<\/li>\n<li>\u5982\u679c\u6570\u7ec4\u4e2d\u5305\u542b\u975e\u6570\u5b57\u5143\u7d20\uff0c\u5219\u4f1a\u629b\u51fa NumberFormatException \u5f02\u5e38\u3002\u56e0\u6b64\uff0c\u5728\u6c42\u548c\u4e4b\u524d\uff0c\u6700\u597d\u5148\u9a8c\u8bc1\u6570\u7ec4\u5143\u7d20\u662f\u5426\u90fd\u662f\u6570\u5b57\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fjava \u600e\u4e48\u6c42\u6570\u7ec4\u5185\u7684\u4e2a\u6570\u5b57\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 java \u4e2d\u6c42\u6570\u7ec4\u6570\u5b57\u4e4b\u548c\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528\u5faa\u73af\u9010\u4e2a\u76f8\u52a0\uff1a\u4f7f\u7528 arrays.stream() \u65b9\u6cd5\u8f6c\u6362\u6210\u6d41\u5bf9\u8c61\u5e76\u6c42\u548c\u3002 \u5982\u4f55\u6c42\u6570\u7ec4\u5185\u6570\u5b57\u4e4b\u548c \u5728 Java \u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\u6216\u5185\u7f6e\u51fd\u6570\u6765\u6c42\u6570\u7ec4\u4e2d\u6570\u5b57\u4e4b\u548c\u3002 \u5faa\u73af\u65b9\u5f0f \u4f7f\u7528\u5faa\u73af\u7684\u65b9\u5f0f\u6c42\u548c\u662f\u6700\u76f4\u63a5\u7684\u65b9\u6cd5\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] numbers = {1, 2, 3, 4, 5}; int sum = 0; for (int number : numbers) { sum += number; } System.out.println(sum); \/\/ \u8f93\u51fa: 15 \u767b\u5f55\u540e\u590d\u5236 \u5185\u7f6e\u51fd\u6570\u65b9\u5f0f Java \u63d0\u4f9b\u4e86 Arrays.stream() \u65b9\u6cd5\uff0c\u53ef\u4ee5\u5c06\u6570\u7ec4\u8f6c\u6362\u6210\u6d41\u5bf9\u8c61\uff0c\u7136\u540e\u4f7f\u7528 sum() \u65b9\u6cd5\u6c42\u548c\uff1a int[] numbers = {1, 2, 3, 4, 5}; int [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-66658","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66658","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=66658"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66658\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=66658"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=66658"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=66658"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}