{"id":38556,"date":"2024-11-26T10:32:14","date_gmt":"2024-11-26T02:32:14","guid":{"rendered":"https:\/\/fwq.ai\/blog\/38556\/"},"modified":"2024-11-26T10:32:14","modified_gmt":"2024-11-26T02:32:14","slug":"java%e6%80%8e%e4%b9%88%e5%90%91%e6%95%b0%e7%bb%84%e5%86%85%e6%b7%bb%e5%8a%a0%e6%95%b0%e6%8d%ae","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/38556\/","title":{"rendered":"java\u600e\u4e48\u5411\u6570\u7ec4\u5185\u6dfb\u52a0\u6570\u636e"},"content":{"rendered":"<blockquote><p>\n  \u5411 java \u6570\u7ec4\u6dfb\u52a0\u6570\u636e\u7684\u56db\u79cd\u65b9\u6cd5\uff1a\u76f4\u63a5\u8d4b\u503c\uff1a\u521d\u59cb\u5316\u6570\u7ec4\u5e76\u6307\u5b9a\u5143\u7d20\u503c\u3002arrays.fill()\uff1a\u5c06\u6570\u7ec4\u4e2d\u6240\u6709\u5143\u7d20\u586b\u5145\u4e3a\u6307\u5b9a\u503c\u3002\u4f7f\u7528\u5faa\u73af\uff1a\u9010\u4e2a\u5143\u7d20\u8d4b\u503c\uff0c\u6839\u636e\u7d22\u5f15\u8ba1\u7b97\u503c\u3002\u590d\u5236\u6570\u7ec4\uff1a\u521b\u5efa\u65b0\u6570\u7ec4\uff0c\u5c06\u73b0\u6709\u6570\u7ec4\u590d\u5236\u5230\u5176\u4e2d\uff0c\u5e76\u6dfb\u52a0\u65b0\u5143\u7d20\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/15\/2024111503092038903.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u5411\u6570\u7ec4\u5185\u6dfb\u52a0\u6570\u636e\u63d2\u56fe\" alt=\"java\u600e\u4e48\u5411\u6570\u7ec4\u5185\u6dfb\u52a0\u6570\u636e\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5411 Java \u6570\u7ec4\u6dfb\u52a0\u6570\u636e<\/strong><\/p>\n<p>Java \u6570\u7ec4\u662f\u4e00\u4e2a\u56fa\u5b9a\u5927\u5c0f\u7684\u6570\u636e\u7ed3\u6784\uff0c\u5b83\u5b58\u50a8\u540c\u4e00\u7c7b\u578b\u7684\u6570\u636e\u5143\u7d20\u3002 \u5411\u6570\u7ec4\u4e2d\u6dfb\u52a0\u6570\u636e\u6d89\u53ca\u51e0\u4e2a\u6b65\u9aa4\uff1a<\/p>\n<p><strong>\u65b9\u6cd5 1\uff1a\u521d\u59cb\u5316\u6570\u7ec4\u5e76\u76f4\u63a5\u8d4b\u503c<\/strong><\/p>\n<pre>int[] arr = new int[5];\narr[0] = 10;\narr[1] = 20;\narr[2] = 30;\n\/\/ \u5982\u6b64\u7c7b\u63a8<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u65b9\u6cd5 2\uff1a\u4f7f\u7528 Arrays.fill() \u65b9\u6cd5<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] arr = new int[5];\nArrays.fill(arr, 10); \/\/ \u5c06\u6570\u7ec4\u4e2d\u7684\u6240\u6709\u5143\u7d20\u586b\u5145\u4e3a 10<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u65b9\u6cd5 3\uff1a\u4f7f\u7528\u5faa\u73af<\/strong><\/p>\n<pre>int[] arr = new int[5];\nfor (int i = 0; i &lt; arr.length; i++) {\n    arr[i] = i * 10; \/\/ \u5c06\u6bcf\u4e2a\u5143\u7d20\u8bbe\u7f6e\u4e3a i*10\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u65b9\u6cd5 4\uff1a\u590d\u5236\u6570\u7ec4<\/strong><\/p>\n<pre>int[] arr1 = {10, 20, 30};\nint[] arr2 = new int[arr1.length + 1]; \/\/ \u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5176\u957f\u5ea6\u6bd4 arr1 \u5927 1\nSystem.arraycopy(arr1, 0, arr2, 0, arr1.length); \/\/ \u5c06 arr1 \u590d\u5236\u5230 arr2\narr2[arr2.length - 1] = 40; \/\/ \u5411 arr2 \u6dfb\u52a0\u4e00\u4e2a\u65b0\u5143\u7d20<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u6ce8\u610f\uff1a<\/strong><\/p>\n<ul>\n<li>Java \u6570\u7ec4\u7684\u5927\u5c0f\u5728\u521b\u5efa\u540e\u65e0\u6cd5\u66f4\u6539\u3002<\/li>\n<li>\u6570\u7ec4\u7d22\u5f15\u4ece 0 \u5f00\u59cb\uff0c\u6570\u7ec4\u7684\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u7684\u7d22\u5f15\u4e3a length &#8211; 1\u3002<\/li>\n<li>\u5c1d\u8bd5\u8bbf\u95ee\u8d85\u51fa\u6570\u7ec4\u8303\u56f4\u7684\u5143\u7d20\u4f1a\u5bfc\u81f4 ArrayIndexOutOfBoundsException\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u5411\u6570\u7ec4\u5185\u6dfb\u52a0\u6570\u636e\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>\u5411 java \u6570\u7ec4\u6dfb\u52a0\u6570\u636e\u7684\u56db\u79cd\u65b9\u6cd5\uff1a\u76f4\u63a5\u8d4b\u503c\uff1a\u521d\u59cb\u5316\u6570\u7ec4\u5e76\u6307\u5b9a\u5143\u7d20\u503c\u3002arrays.fill()\uff1a\u5c06\u6570\u7ec4\u4e2d\u6240\u6709\u5143\u7d20\u586b\u5145\u4e3a\u6307\u5b9a\u503c\u3002\u4f7f\u7528\u5faa\u73af\uff1a\u9010\u4e2a\u5143\u7d20\u8d4b\u503c\uff0c\u6839\u636e\u7d22\u5f15\u8ba1\u7b97\u503c\u3002\u590d\u5236\u6570\u7ec4\uff1a\u521b\u5efa\u65b0\u6570\u7ec4\uff0c\u5c06\u73b0\u6709\u6570\u7ec4\u590d\u5236\u5230\u5176\u4e2d\uff0c\u5e76\u6dfb\u52a0\u65b0\u5143\u7d20\u3002 \u5982\u4f55\u5411 Java \u6570\u7ec4\u6dfb\u52a0\u6570\u636e Java \u6570\u7ec4\u662f\u4e00\u4e2a\u56fa\u5b9a\u5927\u5c0f\u7684\u6570\u636e\u7ed3\u6784\uff0c\u5b83\u5b58\u50a8\u540c\u4e00\u7c7b\u578b\u7684\u6570\u636e\u5143\u7d20\u3002 \u5411\u6570\u7ec4\u4e2d\u6dfb\u52a0\u6570\u636e\u6d89\u53ca\u51e0\u4e2a\u6b65\u9aa4\uff1a \u65b9\u6cd5 1\uff1a\u521d\u59cb\u5316\u6570\u7ec4\u5e76\u76f4\u63a5\u8d4b\u503c int[] arr = new int[5]; arr[0] = 10; arr[1] = 20; arr[2] = 30; \/\/ \u5982\u6b64\u7c7b\u63a8 \u767b\u5f55\u540e\u590d\u5236 \u65b9\u6cd5 2\uff1a\u4f7f\u7528 Arrays.fill() \u65b9\u6cd5 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] arr = new int[5]; Arrays.fill(arr, 10); \/\/ \u5c06\u6570\u7ec4\u4e2d\u7684\u6240\u6709\u5143\u7d20\u586b\u5145\u4e3a 10 \u767b\u5f55\u540e\u590d\u5236 \u65b9\u6cd5 3\uff1a\u4f7f\u7528\u5faa\u73af int[] arr = new int[5]; for (int i = [&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-38556","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/38556","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=38556"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/38556\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=38556"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=38556"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=38556"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}