{"id":34698,"date":"2024-11-26T12:21:51","date_gmt":"2024-11-26T04:21:51","guid":{"rendered":"https:\/\/fwq.ai\/blog\/34698\/"},"modified":"2024-11-26T12:21:51","modified_gmt":"2024-11-26T04:21:51","slug":"java%e4%ba%8c%e7%bb%b4%e6%95%b0%e7%bb%84%e8%b6%8a%e7%95%8c%e6%80%8e%e4%b9%88%e4%bf%ae%e6%94%b9","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/34698\/","title":{"rendered":"Java\u4e8c\u7ef4\u6570\u7ec4\u8d8a\u754c\u600e\u4e48\u4fee\u6539"},"content":{"rendered":"<blockquote><p>\n  \u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4e24\u79cd\u65b9\u6cd5\u4fee\u6539 java \u4e8c\u7ef4\u6570\u7ec4\u8d8a\u754c\u95ee\u9898\uff1a\u4f7f\u7528\u8fb9\u754c\u68c0\u67e5\uff0c\u5728\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u4e4b\u524d\u68c0\u67e5\u7d22\u5f15\u662f\u5426\u5728\u6570\u7ec4\u8303\u56f4\u5185\u3002\u4f7f\u7528\u6570\u7ec4\u5b9e\u7528\u7c7b\uff0c\u5982 arrays.copyofrange()\uff0c\u521b\u5efa\u65b0\u6570\u7ec4\uff0c\u5176\u4e2d\u5305\u542b\u6307\u5b9a\u7684\u8303\u56f4\uff0c\u4ece\u800c\u907f\u514d\u8d8a\u754c\u95ee\u9898\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/03\/2024110301181942075.jpg\" class=\"aligncenter\" title=\"Java\u4e8c\u7ef4\u6570\u7ec4\u8d8a\u754c\u600e\u4e48\u4fee\u6539\u63d2\u56fe\" alt=\"Java\u4e8c\u7ef4\u6570\u7ec4\u8d8a\u754c\u600e\u4e48\u4fee\u6539\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u4fee\u6539 Java \u4e8c\u7ef4\u6570\u7ec4\u8d8a\u754c\u95ee\u9898<\/strong><\/p>\n<p><strong>\u95ee\u9898\uff1a<\/strong>\u5f53\u8bbf\u95ee Java \u4e8c\u7ef4\u6570\u7ec4\u8d85\u51fa\u5176\u8fb9\u754c\u65f6\u5982\u4f55\u4fee\u6539\u8d8a\u754c\u95ee\u9898\uff1f<\/p>\n<p><strong>\u7b54\u6848\uff1a<\/strong>\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4e24\u79cd\u65b9\u6cd5\u4e4b\u4e00\u4fee\u6539\u4e8c\u7ef4\u6570\u7ec4\u8d8a\u754c\u95ee\u9898\uff1a<\/p>\n<p><strong>\u65b9\u6cd5 1\uff1a\u4f7f\u7528\u8fb9\u754c\u68c0\u67e5<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p>\u5728\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u4e4b\u524d\uff0c\u6dfb\u52a0\u8fb9\u754c\u68c0\u67e5\u4ee5\u786e\u4fdd\u7d22\u5f15\u5728\u6570\u7ec4\u8303\u56f4\u5185\u3002\u5982\u679c\u7d22\u5f15\u8d85\u51fa\u8303\u56f4\uff0c\u5219\u629b\u51fa\u5f02\u5e38\u6216\u91c7\u53d6\u5176\u4ed6\u9002\u5f53\u63aa\u65bd\u3002<\/p>\n<pre>int[][] arr = {{1, 2, 3}, {4, 5, 6}};\n\ntry {\n    int value = arr[0][3]; \/\/ \u629b\u51fa ArrayIndexOutOfBoundsException\n} catch (ArrayIndexOutOfBoundsException e) {\n    \/\/ \u5904\u7406\u8d8a\u754c\u5f02\u5e38\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u65b9\u6cd5 2\uff1a\u4f7f\u7528\u6570\u7ec4\u5b9e\u7528\u7c7b<\/strong><\/p>\n<p>\u4f7f\u7528 Arrays.copyOfRange() \u6216 Arrays.copyOf() \u7b49\u6570\u7ec4\u5b9e\u7528\u7c7b\u6765\u521b\u5efa\u65b0\u6570\u7ec4\uff0c\u8be5\u6570\u7ec4\u5177\u6709\u6307\u5b9a\u7684\u8303\u56f4\uff0c\u4ece\u800c\u907f\u514d\u8d8a\u754c\u95ee\u9898\u3002<\/p>\n<pre>int[][] arr = {{1, 2, 3}, {4, 5, 6}};\n\n\/\/ \u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5176\u4e2d\u5305\u542b arr \u4e2d\u524d\u4e24\u884c\u7684\u503c\nint[][] newArr = Arrays.copyOfRange(arr, 0, 2);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fJava\u4e8c\u7ef4\u6570\u7ec4\u8d8a\u754c\u600e\u4e48\u4fee\u6539\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":"<p>\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4e24\u79cd\u65b9\u6cd5\u4fee\u6539 java \u4e8c\u7ef4\u6570\u7ec4\u8d8a\u754c\u95ee\u9898\uff1a\u4f7f\u7528\u8fb9\u754c\u68c0\u67e5\uff0c\u5728\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u4e4b\u524d\u68c0\u67e5\u7d22\u5f15\u662f\u5426\u5728\u6570\u7ec4\u8303\u56f4\u5185\u3002\u4f7f\u7528\u6570\u7ec4\u5b9e\u7528\u7c7b\uff0c\u5982 arrays.copyofrange()\uff0c\u521b\u5efa\u65b0\u6570\u7ec4\uff0c\u5176\u4e2d\u5305\u542b\u6307\u5b9a\u7684\u8303\u56f4\uff0c\u4ece\u800c\u907f\u514d\u8d8a\u754c\u95ee\u9898\u3002 \u5982\u4f55\u4fee\u6539 Java \u4e8c\u7ef4\u6570\u7ec4\u8d8a\u754c\u95ee\u9898 \u95ee\u9898\uff1a\u5f53\u8bbf\u95ee Java \u4e8c\u7ef4\u6570\u7ec4\u8d85\u51fa\u5176\u8fb9\u754c\u65f6\u5982\u4f55\u4fee\u6539\u8d8a\u754c\u95ee\u9898\uff1f \u7b54\u6848\uff1a\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4e24\u79cd\u65b9\u6cd5\u4e4b\u4e00\u4fee\u6539\u4e8c\u7ef4\u6570\u7ec4\u8d8a\u754c\u95ee\u9898\uff1a \u65b9\u6cd5 1\uff1a\u4f7f\u7528\u8fb9\u754c\u68c0\u67e5 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u5728\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u4e4b\u524d\uff0c\u6dfb\u52a0\u8fb9\u754c\u68c0\u67e5\u4ee5\u786e\u4fdd\u7d22\u5f15\u5728\u6570\u7ec4\u8303\u56f4\u5185\u3002\u5982\u679c\u7d22\u5f15\u8d85\u51fa\u8303\u56f4\uff0c\u5219\u629b\u51fa\u5f02\u5e38\u6216\u91c7\u53d6\u5176\u4ed6\u9002\u5f53\u63aa\u65bd\u3002 int[][] arr = {{1, 2, 3}, {4, 5, 6}}; try { int value = arr[0][3]; \/\/ \u629b\u51fa ArrayIndexOutOfBoundsException } catch (ArrayIndexOutOfBoundsException e) { \/\/ \u5904\u7406\u8d8a\u754c\u5f02\u5e38 } \u767b\u5f55\u540e\u590d\u5236 \u65b9\u6cd5 2\uff1a\u4f7f\u7528\u6570\u7ec4\u5b9e\u7528\u7c7b \u4f7f\u7528 Arrays.copyOfRange() \u6216 Arrays.copyOf() \u7b49\u6570\u7ec4\u5b9e\u7528\u7c7b\u6765\u521b\u5efa\u65b0\u6570\u7ec4\uff0c\u8be5\u6570\u7ec4\u5177\u6709\u6307\u5b9a\u7684\u8303\u56f4\uff0c\u4ece\u800c\u907f\u514d\u8d8a\u754c\u95ee\u9898\u3002 int[][] arr = {{1, 2, 3}, [&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-34698","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34698","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=34698"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34698\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=34698"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=34698"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=34698"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}