{"id":37224,"date":"2024-11-26T13:49:05","date_gmt":"2024-11-26T05:49:05","guid":{"rendered":"https:\/\/fwq.ai\/blog\/37224\/"},"modified":"2024-11-26T13:49:05","modified_gmt":"2024-11-26T05:49:05","slug":"java%e5%ae%9a%e4%b9%89%e6%95%b0%e7%bb%84%e4%bb%a5%e5%90%8e%e6%80%8e%e4%b9%88%e8%b5%8b%e5%80%bc","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/37224\/","title":{"rendered":"java\u5b9a\u4e49\u6570\u7ec4\u4ee5\u540e\u600e\u4e48\u8d4b\u503c"},"content":{"rendered":"<blockquote><p>\n  \u5728 java \u4e2d\u4e3a\u6570\u7ec4\u8d4b\u503c\u7684\u65b9\u6cd5\u6709\uff1a\u76f4\u63a5\u4f7f\u7528\u7d22\u5f15\u8d4b\u503c\u4f7f\u7528\u6570\u7ec4\u521d\u59cb\u5316\u5668\u8d4b\u503c\u4f7f\u7528\u5faa\u73af\u904d\u5386\u6570\u7ec4\u8d4b\u503c\u8c03\u7528 arrays.fill() \u65b9\u6cd5\u8d4b\u503c\u4f7f\u7528 arrays.copyof() \u65b9\u6cd5\u521b\u5efa\u6d45\u62f7\u8d1d\u5e76\u8d4b\u503c\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111302454158937.jpg\" class=\"aligncenter\" title=\"java\u5b9a\u4e49\u6570\u7ec4\u4ee5\u540e\u600e\u4e48\u8d4b\u503c\u63d2\u56fe\" alt=\"java\u5b9a\u4e49\u6570\u7ec4\u4ee5\u540e\u600e\u4e48\u8d4b\u503c\u63d2\u56fe\" \/><\/p>\n<p><strong>Java\u6570\u7ec4\u8d4b\u503c<\/strong><\/p>\n<p>\u5728Java\u4e2d\uff0c\u6570\u7ec4\u662f\u4e00\u4e2a\u56fa\u5b9a\u5927\u5c0f\u7684\u5143\u7d20\u96c6\u5408\u3002\u58f0\u660e\u4e00\u4e2a\u6570\u7ec4\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528\u591a\u79cd\u65b9\u6cd5\u4e3a\u5176\u8d4b\u503c\u3002<\/p>\n<p><strong>1. \u76f4\u63a5\u8d4b\u503c<\/strong><\/p>\n<p>\u6700\u76f4\u63a5\u7684\u65b9\u5f0f\u662f\u76f4\u63a5\u4f7f\u7528\u6570\u7ec4\u5143\u7d20\u7684\u7d22\u5f15\u8fdb\u884c\u8d4b\u503c\uff0c\u4f8b\u5982\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] numbers = new int[5];\nnumbers[0] = 10;\nnumbers[1] = 20;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. \u6570\u7ec4\u521d\u59cb\u5316\u5668<\/strong><\/p>\n<p>\u53e6\u4e00\u79cd\u7b80\u6d01\u7684\u65b9\u6cd5\u662f\u4f7f\u7528\u6570\u7ec4\u521d\u59cb\u5316\u5668\u6765\u4e00\u6b21\u6027\u4e3a\u6240\u6709\u5143\u7d20\u8d4b\u503c\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre>int[] numbers = {10, 20, 30, 40, 50};<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>3. \u5faa\u73af\u8d4b\u503c<\/strong><\/p>\n<p>\u5982\u679c\u4f60\u9700\u8981\u6839\u636e\u67d0\u4e2a\u5faa\u73af\u6765\u8d4b\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\u6765\u904d\u5386\u6570\u7ec4\u5143\u7d20\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre>int[] numbers = new int[5];\nfor (int i = 0; i &lt; numbers.length; i++) {\n    numbers[i] = i * 10;\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>4. Arrays.fill()\u65b9\u6cd5<\/strong><\/p>\n<p>Java\u8fd8\u63d0\u4f9b\u4e86Arrays.fill()\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5c06\u6570\u7ec4\u7684\u6240\u6709\u5143\u7d20\u8d4b\u503c\u4e3a\u6307\u5b9a\u503c\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre>int[] numbers = new int[5];\nArrays.fill(numbers, 10);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>5. \u6d45\u62f7\u8d1d<\/strong><\/p>\n<p>\u53ef\u4ee5\u4f7f\u7528Arrays.copyOf()\u65b9\u6cd5\u6765\u521b\u5efa\u6570\u7ec4\u7684\u6d45\u62f7\u8d1d\uff0c\u5176\u4e2d\u539f\u59cb\u6570\u7ec4\u4e2d\u7684\u66f4\u6539\u4e5f\u4f1a\u53cd\u6620\u5230\u65b0\u6570\u7ec4\u4e2d\u3002<\/p>\n<pre>int[] original = {10, 20, 30};\nint[] copy = Arrays.copyOf(original, original.length);\n\ncopy[0] = 100; \/\/ \u66f4\u65b0copy\u6570\u7ec4\u7b2c\u4e00\u4e2a\u5143\u7d20\nSystem.out.println(original[0]); \/\/ \u8f93\u51fa100\uff08\u539f\u59cb\u6570\u7ec4\u4e5f\u88ab\u66f4\u65b0\uff09<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u5b9a\u4e49\u6570\u7ec4\u4ee5\u540e\u600e\u4e48\u8d4b\u503c\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>\u5728 java \u4e2d\u4e3a\u6570\u7ec4\u8d4b\u503c\u7684\u65b9\u6cd5\u6709\uff1a\u76f4\u63a5\u4f7f\u7528\u7d22\u5f15\u8d4b\u503c\u4f7f\u7528\u6570\u7ec4\u521d\u59cb\u5316\u5668\u8d4b\u503c\u4f7f\u7528\u5faa\u73af\u904d\u5386\u6570\u7ec4\u8d4b\u503c\u8c03\u7528 arrays.fill() \u65b9\u6cd5\u8d4b\u503c\u4f7f\u7528 arrays.copyof() \u65b9\u6cd5\u521b\u5efa\u6d45\u62f7\u8d1d\u5e76\u8d4b\u503c Java\u6570\u7ec4\u8d4b\u503c \u5728Java\u4e2d\uff0c\u6570\u7ec4\u662f\u4e00\u4e2a\u56fa\u5b9a\u5927\u5c0f\u7684\u5143\u7d20\u96c6\u5408\u3002\u58f0\u660e\u4e00\u4e2a\u6570\u7ec4\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528\u591a\u79cd\u65b9\u6cd5\u4e3a\u5176\u8d4b\u503c\u3002 1. \u76f4\u63a5\u8d4b\u503c \u6700\u76f4\u63a5\u7684\u65b9\u5f0f\u662f\u76f4\u63a5\u4f7f\u7528\u6570\u7ec4\u5143\u7d20\u7684\u7d22\u5f15\u8fdb\u884c\u8d4b\u503c\uff0c\u4f8b\u5982\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] numbers = new int[5]; numbers[0] = 10; numbers[1] = 20; \u767b\u5f55\u540e\u590d\u5236 2. \u6570\u7ec4\u521d\u59cb\u5316\u5668 \u53e6\u4e00\u79cd\u7b80\u6d01\u7684\u65b9\u6cd5\u662f\u4f7f\u7528\u6570\u7ec4\u521d\u59cb\u5316\u5668\u6765\u4e00\u6b21\u6027\u4e3a\u6240\u6709\u5143\u7d20\u8d4b\u503c\uff0c\u4f8b\u5982\uff1a int[] numbers = {10, 20, 30, 40, 50}; \u767b\u5f55\u540e\u590d\u5236 3. \u5faa\u73af\u8d4b\u503c \u5982\u679c\u4f60\u9700\u8981\u6839\u636e\u67d0\u4e2a\u5faa\u73af\u6765\u8d4b\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\u6765\u904d\u5386\u6570\u7ec4\u5143\u7d20\uff0c\u4f8b\u5982\uff1a int[] numbers = new int[5]; for (int i = 0; i &lt; numbers.length; 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-37224","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37224","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=37224"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37224\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=37224"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=37224"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=37224"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}