{"id":66837,"date":"2025-05-03T12:25:17","date_gmt":"2025-05-03T04:25:17","guid":{"rendered":"https:\/\/fwq.ai\/blog\/66837\/"},"modified":"2025-05-03T12:25:17","modified_gmt":"2025-05-03T04:25:17","slug":"java%e6%80%8e%e4%b9%88%e8%8e%b7%e5%be%97%e6%95%b0%e7%bb%84%e7%9a%84%e6%9f%90%e4%b8%aa%e5%ad%90%e9%9b%86-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/66837\/","title":{"rendered":"java\u600e\u4e48\u83b7\u5f97\u6570\u7ec4\u7684\u67d0\u4e2a\u5b50\u96c6"},"content":{"rendered":"<blockquote><p>\n  \u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4e09\u79cd\u65b9\u6cd5\u83b7\u53d6 java \u6570\u7ec4\u7684\u5b50\u96c6\uff1a\u4f7f\u7528 arrays.copyofrange() \u590d\u5236\u6307\u5b9a\u4e0b\u6807\u8303\u56f4\u7684\u5143\u7d20\uff1b\u4f7f\u7528 system.arraycopy() \u5c06\u6307\u5b9a\u4e0b\u6807\u8303\u56f4\u7684\u5143\u7d20\u590d\u5236\u5230\u65b0\u6570\u7ec4\uff1b\u4f7f\u7528 stream api \u8df3\u8fc7\u6307\u5b9a\u6570\u91cf\u7684\u5143\u7d20\u5e76\u9650\u5236\u5143\u7d20\u6570\u91cf\uff0c\u7136\u540e\u8f6c\u6362\u4e3a\u6570\u7ec4\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/17\/2024111711551688599.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u83b7\u5f97\u6570\u7ec4\u7684\u67d0\u4e2a\u5b50\u96c6\u63d2\u56fe\" alt=\"java\u600e\u4e48\u83b7\u5f97\u6570\u7ec4\u7684\u67d0\u4e2a\u5b50\u96c6\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u83b7\u53d6 Java \u6570\u7ec4\u7684\u5b50\u96c6<\/strong><\/p>\n<p>\u8981\u83b7\u53d6 Java \u6570\u7ec4\u7684\u5b50\u96c6\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/p>\n<p><strong>\u65b9\u6cd5 1\uff1a\u4f7f\u7528 Arrays.copyOfRange()<\/strong><\/p>\n<pre>int[] original = {1, 2, 3, 4, 5, 6};\nint[] subArray = Arrays.copyOfRange(original, 1, 4); \/\/ \u63d0\u53d6\u4e0b\u6807 1 \u5230 3 \u7684\u5b50\u96c6\uff08\u4e0d\u5305\u542b 4\uff09<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u65b9\u6cd5 2\uff1a\u4f7f\u7528 System.arraycopy()<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] original = {1, 2, 3, 4, 5, 6};\nint[] subArray = new int[3];\nSystem.arraycopy(original, 1, subArray, 0, 3); \/\/ \u63d0\u53d6\u4e0b\u6807 1 \u5230 3 \u7684\u5b50\u96c6\uff08\u4e0d\u5305\u542b 4\uff09<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u65b9\u6cd5 3\uff1a\u4f7f\u7528 Stream API<\/strong><\/p>\n<p><strong>Java 8 \u53ca\u66f4\u9ad8\u7248\u672c<\/strong><\/p>\n<pre>int[] original = {1, 2, 3, 4, 5, 6};\nList&lt;Integer&gt; subList = Arrays.stream(original).skip(1).limit(3).toList(); \/\/ \u63d0\u53d6\u4e0b\u6807 1 \u5230 3 \u7684\u5b50\u96c6\uff08\u4e0d\u5305\u542b 4\uff09\nint[] subArray = subList.stream().mapToInt(Integer::intValue).toArray();<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u65b9\u6cd5\u90fd\u53ef\u4ee5\u83b7\u53d6\u6570\u7ec4\u7684\u5b50\u96c6\uff0c\u5177\u4f53\u9009\u62e9\u54ea\u79cd\u65b9\u6cd5\u53d6\u51b3\u4e8e\u5177\u4f53\u9700\u6c42\u548c Java \u7248\u672c\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u83b7\u5f97\u6570\u7ec4\u7684\u67d0\u4e2a\u5b50\u96c6\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>\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4e09\u79cd\u65b9\u6cd5\u83b7\u53d6 java \u6570\u7ec4\u7684\u5b50\u96c6\uff1a\u4f7f\u7528 arrays.copyofrange() \u590d\u5236\u6307\u5b9a\u4e0b\u6807\u8303\u56f4\u7684\u5143\u7d20\uff1b\u4f7f\u7528 system.arraycopy() \u5c06\u6307\u5b9a\u4e0b\u6807\u8303\u56f4\u7684\u5143\u7d20\u590d\u5236\u5230\u65b0\u6570\u7ec4\uff1b\u4f7f\u7528 stream api \u8df3\u8fc7\u6307\u5b9a\u6570\u91cf\u7684\u5143\u7d20\u5e76\u9650\u5236\u5143\u7d20\u6570\u91cf\uff0c\u7136\u540e\u8f6c\u6362\u4e3a\u6570\u7ec4\u3002 \u5982\u4f55\u83b7\u53d6 Java \u6570\u7ec4\u7684\u5b50\u96c6 \u8981\u83b7\u53d6 Java \u6570\u7ec4\u7684\u5b50\u96c6\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\uff1a \u65b9\u6cd5 1\uff1a\u4f7f\u7528 Arrays.copyOfRange() int[] original = {1, 2, 3, 4, 5, 6}; int[] subArray = Arrays.copyOfRange(original, 1, 4); \/\/ \u63d0\u53d6\u4e0b\u6807 1 \u5230 3 \u7684\u5b50\u96c6\uff08\u4e0d\u5305\u542b 4\uff09 \u767b\u5f55\u540e\u590d\u5236 \u65b9\u6cd5 2\uff1a\u4f7f\u7528 System.arraycopy() \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] original = {1, 2, 3, 4, 5, 6}; [&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-66837","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66837","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=66837"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66837\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=66837"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=66837"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=66837"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}