{"id":34519,"date":"2024-11-26T08:05:41","date_gmt":"2024-11-26T00:05:41","guid":{"rendered":"https:\/\/fwq.ai\/blog\/34519\/"},"modified":"2024-11-26T08:05:41","modified_gmt":"2024-11-26T00:05:41","slug":"java-stream-api-limit-%e5%92%8cskip-%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/34519\/","title":{"rendered":"Java Stream API limit() \u548cskip() \u65b9\u6cd5"},"content":{"rendered":"

\"Java<\/p>\n

\u5728java 8\u4e2d\uff0cstream api\u63d0\u4f9b\u4e86limit()\u548cskip()\u65b9\u6cd5\u6765\u63a7\u5236\u6d41\u4e2d\u5143\u7d20\u7684\u6570\u91cf\u3002<\/p>\n

limit(n)\uff1a\u5c06\u6d41\u9650\u5236\u4e3a\u524d n \u4e2a\u5143\u7d20\u3002<\/p>\n

skip(n)\uff1a\u8df3\u8fc7\u524d n \u4e2a\u5143\u7d20\u5e76\u5904\u7406\u5176\u4f59\u5143\u7d20\u3002<\/p>\n

\u8fd9\u662f\u4e00\u4e2a\u6f14\u793a\u4e24\u8005\u7684\u793a\u4f8b\uff1a<\/p>\n

import java.util.arrays;\nimport java.util.list;\nimport java.util.stream.collectors;\n\npublic class streamlimitskipexample {\n    public static void main(string[] args) {\n        list<integer> numbers = arrays.aslist(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);\n\n        \/\/ using limit() to get the first 5 elements\n        list<integer> limitedlist = numbers.stream()\n                .limit(5)\n                .collect(collectors.tolist());\n        system.out.println(\"first 5 elements: \" + limitedlist);\n\n        \/\/ using skip() to skip the first 5 elements and get the rest\n        list<integer> skippedlist = numbers.stream()\n                .skip(5)\n                .collect(collectors.tolist());\n        system.out.println(\"after skipping first 5 elements: \" + skippedlist);\n\n        \/\/ combining skip() and limit() to get elements from 4th to 7th positions\n        list<integer> limitedandskippedlist = numbers.stream()\n                .skip(3)     \/\/ skip first 3 elements (index starts at 0)\n                .limit(4)    \/\/ then take the next 4 elements\n                .collect(collectors.tolist());\n        system.out.println(\"elements from 4th to 7th positions: \" + limitedandskippedlist);\n    }\n}\n\n<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8bf4\u660e\uff1a<\/p>\n
\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
\u4f7f\u7528 limit(5)\uff1a\u8fd9\u5c06\u6d41\u9650\u5236\u4e3a\u524d 5 \u4e2a\u5143\u7d20\uff0c\u7ed3\u679c\u4e3a [1, 2, 3, 4, 5]\u3002<\/p>\n
\u4f7f\u7528skip(5)\uff1a\u8fd9\u4f1a\u8df3\u8fc7\u524d5\u4e2a\u5143\u7d20\u5e76\u6536\u96c6\u5176\u4f59\u5143\u7d20\uff0c\u4ece\u800c\u5f97\u5230[6, 7, 8, 9, 10]\u3002<\/p>\n
\u7ed3\u5408skip(3)\u548climit(4)\uff1a\u9996\u5148\uff0c\u5b83\u8df3\u8fc7\u524d3\u4e2a\u5143\u7d20\uff0c\u7136\u540e\u9650\u5236\u5230\u63a5\u4e0b\u6765\u76844\u4e2a\uff0c\u4ece\u800c\u5f97\u5230\u4f4d\u7f6e4\u52307\u7684\u5143\u7d20\uff1a[4,5,6,7]\u3002<\/p>\n
\u8f93\u51fa\uff1a<\/p>\n
First 5 elements: [1, 2, 3, 4, 5]\nAfter skipping first 5 elements: [6, 7, 8, 9, 10]\nElements from 4th to 7th positions: [4, 5, 6, 7]\n\n<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6b64\u65b9\u6cd5\u5bf9\u4e8e\u5904\u7406\u5206\u9875\u6216\u63d0\u53d6\u96c6\u5408\u4e2d\u7684\u7279\u5b9a\u8303\u56f4\u975e\u5e38\u6709\u7528\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662fJava Stream API limit() \u548cskip() \u65b9\u6cd5\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5728java 8\u4e2d\uff0cstream api\u63d0\u4f9b\u4e86limit()\u548cskip()\u65b9\u6cd5\u6765\u63a7\u5236\u6d41\u4e2d\u5143\u7d20\u7684\u6570\u91cf\u3002 limit(n)\uff1a\u5c06\u6d41\u9650\u5236\u4e3a\u524d n \u4e2a\u5143\u7d20\u3002 skip(n)\uff1a\u8df3\u8fc7\u524d n \u4e2a\u5143\u7d20\u5e76\u5904\u7406\u5176\u4f59\u5143\u7d20\u3002 \u8fd9\u662f\u4e00\u4e2a\u6f14\u793a\u4e24\u8005\u7684\u793a\u4f8b\uff1a import java.util.arrays; import java.util.list; import java.util.stream.collectors; public class streamlimitskipexample { public static void main(string[] args) { list<integer> numbers = arrays.aslist(1, 2, 3, 4, 5, 6, 7, 8, 9, 10); \/\/ using limit() to get the first 5 elements list<integer> limitedlist = numbers.stream() .limit(5) .collect(collectors.tolist()); system.out.println(“first […]<\/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-34519","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34519","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=34519"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34519\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=34519"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=34519"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=34519"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}