{"id":65620,"date":"2025-05-03T09:03:36","date_gmt":"2025-05-03T01:03:36","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65620\/"},"modified":"2025-05-03T09:03:36","modified_gmt":"2025-05-03T01:03:36","slug":"java%e6%95%b0%e7%bb%84%e7%b4%a2%e5%bc%95%e8%b6%8a%e7%95%8c%e6%80%8e%e4%b9%88%e8%a7%a3%e5%86%b3-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65620\/","title":{"rendered":"java\u6570\u7ec4\u7d22\u5f15\u8d8a\u754c\u600e\u4e48\u89e3\u51b3"},"content":{"rendered":"<blockquote><p>\n  java \u6570\u7ec4\u7d22\u5f15\u8d8a\u754c\u95ee\u9898\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u89e3\u51b3\uff1a\u8303\u56f4\u68c0\u67e5\uff1a\u9a8c\u8bc1\u7d22\u5f15\u662f\u5426\u5728\u6709\u6548\u8303\u56f4\u5185\uff0c\u9632\u6b62\u8d8a\u754c\u5f02\u5e38\u3002try-catch \u5757\uff1a\u6355\u83b7 arrayindexoutofboundsexception \u5e76\u91c7\u53d6\u9002\u5f53\u64cd\u4f5c\u3002\u6570\u7ec4\u5b9e\u7528\u7c7b\uff1a\u4f7f\u7528 arrays.copyofrange() \u548c aslist() \u65b9\u6cd5\u5b89\u5168\u5730\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u3002\u52a8\u6001\u6570\u7ec4\u7ed3\u6784\uff1a\u4f7f\u7528 arraylist \u6216 linkedlist \u7b49\u7ed3\u6784\u52a8\u6001\u8c03\u6574\u6570\u7ec4\u5927\u5c0f\uff0c\u6d88\u9664\u8d8a\u754c\u98ce\u9669\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111305395712943.jpg\" class=\"aligncenter\" title=\"java\u6570\u7ec4\u7d22\u5f15\u8d8a\u754c\u600e\u4e48\u89e3\u51b3\u63d2\u56fe\" alt=\"java\u6570\u7ec4\u7d22\u5f15\u8d8a\u754c\u600e\u4e48\u89e3\u51b3\u63d2\u56fe\" \/><\/p>\n<h2>Java \u6570\u7ec4\u7d22\u5f15\u8d8a\u754c\u89e3\u51b3\u65b9\u6848<\/h2>\n<p>Java \u6570\u7ec4\u7d22\u5f15\u8d8a\u754c\u662f\u6307\u8bbf\u95ee\u6570\u7ec4\u4e2d\u8d85\u51fa\u6709\u6548\u8303\u56f4\u7684\u7d22\u5f15\u3002\u8fd9\u4f1a\u5bfc\u81f4 <strong>ArrayIndexOutOfBoundsException<\/strong> \u3002<\/p>\n<h3>\u89e3\u51b3\u65b9\u6cd5<\/h3>\n<p>\u6709\u51e0\u79cd\u65b9\u6cd5\u53ef\u4ee5\u89e3\u51b3Java \u6570\u7ec4\u7d22\u5f15\u8d8a\u754c\u95ee\u9898\uff1a<\/p>\n<p><strong>1. \u8303\u56f4\u68c0\u67e5<\/strong><\/p>\n<p>\u6700\u5e38\u89c1\u7684\u65b9\u6cd5\u662f\u5728\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u4e4b\u524d\u68c0\u67e5\u7d22\u5f15\u662f\u5426\u5728\u6709\u6548\u8303\u56f4\u5185\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] arr = {1, 2, 3};\nint index = 2;\n\nif (index &gt;= 0 &amp;&amp; index &lt; arr.length) {\n    System.out.println(arr[index]);\n} else {\n    System.out.println(\"\u7d22\u5f15\u8d8a\u754c\");\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. \u4f7f\u7528 try-catch \u5757<\/strong><\/p>\n<p>\u53ef\u4ee5\u4f7f\u7528 try-catch \u5757\u6765\u6355\u83b7 <strong>ArrayIndexOutOfBoundsException<\/strong> \u3002\u5982\u679c\u51fa\u73b0\u8d8a\u754c\u5f02\u5e38\uff0c\u53ef\u4ee5\u5728 catch \u5757\u4e2d\u91c7\u53d6\u9002\u5f53\u7684\u64cd\u4f5c\uff0c\u4f8b\u5982\u6253\u5370\u9519\u8bef\u6d88\u606f\u6216\u7ec8\u6b62\u7a0b\u5e8f\u3002<\/p>\n<pre>int[] arr = {1, 2, 3};\nint index = 4;\n\ntry {\n    System.out.println(arr[index]);\n} catch (ArrayIndexOutOfBoundsException e) {\n    System.out.println(\"\u7d22\u5f15\u8d8a\u754c: \" + e.getMessage());\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>3. \u4f7f\u7528\u6570\u7ec4\u5b9e\u7528\u7c7b<\/strong><\/p>\n<p>Java \u63d0\u4f9b\u4e86\u4e00\u4e2a <strong>Arrays<\/strong> \u5b9e\u7528\u7c7b\uff0c\u53ef\u4ee5\u7528\u6765\u5b89\u5168\u5730\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u3002\u8be5\u7c7b\u63d0\u4f9b\u4e86\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li> <strong>copyOfRange()<\/strong> \uff1a\u590d\u5236\u6570\u7ec4\u6307\u5b9a\u8303\u56f4\u5185\u7684\u5143\u7d20\uff0c\u4ece\u800c\u907f\u514d\u7d22\u5f15\u8d8a\u754c\u3002<\/li>\n<li> <strong>asList()<\/strong> \uff1a\u5c06\u6570\u7ec4\u8f6c\u6362\u4e3a List\uff0cList \u5177\u6709\u5185\u7f6e\u7684\u754c\u5185\u68c0\u67e5\u529f\u80fd\u3002<\/li>\n<\/ul>\n<pre>int[] arr = {1, 2, 3};\nint index = 4;\n\ntry {\n    System.out.println(Arrays.copyOfRange(arr, 0, index)[index]);\n} catch (ArrayIndexOutOfBoundsException e) {\n    System.out.println(\"\u7d22\u5f15\u8d8a\u754c: \" + e.getMessage());\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>4. \u8c03\u6574\u6570\u7ec4\u5927\u5c0f<\/strong><\/p>\n<p>\u5982\u679c\u6570\u7ec4\u7684\u6709\u6548\u8303\u56f4\u9700\u8981\u52a8\u6001\u589e\u957f\uff0c\u53ef\u4ee5\u4f7f\u7528 <strong>ArrayList<\/strong> \u6216 <strong>LinkedList<\/strong> \u7b49\u52a8\u6001\u6570\u7ec4\u7ed3\u6784\u3002\u8fd9\u4e9b\u6570\u636e\u7ed3\u6784\u53ef\u4ee5\u81ea\u52a8\u8c03\u6574\u5927\u5c0f\u4ee5\u5bb9\u7eb3\u66f4\u591a\u5143\u7d20\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u7d22\u5f15\u8d8a\u754c\u600e\u4e48\u89e3\u51b3\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>java \u6570\u7ec4\u7d22\u5f15\u8d8a\u754c\u95ee\u9898\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u89e3\u51b3\uff1a\u8303\u56f4\u68c0\u67e5\uff1a\u9a8c\u8bc1\u7d22\u5f15\u662f\u5426\u5728\u6709\u6548\u8303\u56f4\u5185\uff0c\u9632\u6b62\u8d8a\u754c\u5f02\u5e38\u3002try-catch \u5757\uff1a\u6355\u83b7 arrayindexoutofboundsexception \u5e76\u91c7\u53d6\u9002\u5f53\u64cd\u4f5c\u3002\u6570\u7ec4\u5b9e\u7528\u7c7b\uff1a\u4f7f\u7528 arrays.copyofrange() \u548c aslist() \u65b9\u6cd5\u5b89\u5168\u5730\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u3002\u52a8\u6001\u6570\u7ec4\u7ed3\u6784\uff1a\u4f7f\u7528 arraylist \u6216 linkedlist \u7b49\u7ed3\u6784\u52a8\u6001\u8c03\u6574\u6570\u7ec4\u5927\u5c0f\uff0c\u6d88\u9664\u8d8a\u754c\u98ce\u9669\u3002 Java \u6570\u7ec4\u7d22\u5f15\u8d8a\u754c\u89e3\u51b3\u65b9\u6848 Java \u6570\u7ec4\u7d22\u5f15\u8d8a\u754c\u662f\u6307\u8bbf\u95ee\u6570\u7ec4\u4e2d\u8d85\u51fa\u6709\u6548\u8303\u56f4\u7684\u7d22\u5f15\u3002\u8fd9\u4f1a\u5bfc\u81f4 ArrayIndexOutOfBoundsException \u3002 \u89e3\u51b3\u65b9\u6cd5 \u6709\u51e0\u79cd\u65b9\u6cd5\u53ef\u4ee5\u89e3\u51b3Java \u6570\u7ec4\u7d22\u5f15\u8d8a\u754c\u95ee\u9898\uff1a 1. \u8303\u56f4\u68c0\u67e5 \u6700\u5e38\u89c1\u7684\u65b9\u6cd5\u662f\u5728\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u4e4b\u524d\u68c0\u67e5\u7d22\u5f15\u662f\u5426\u5728\u6709\u6548\u8303\u56f4\u5185\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] arr = {1, 2, 3}; int index = 2; if (index &gt;= 0 &amp;&amp; index &lt; arr.length) { System.out.println(arr[index]); } else { System.out.println(&#8220;\u7d22\u5f15\u8d8a\u754c&#8221;); } \u767b\u5f55\u540e\u590d\u5236 2. \u4f7f\u7528 try-catch [&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-65620","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65620","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=65620"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65620\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65620"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65620"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65620"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}