{"id":34786,"date":"2024-11-26T11:38:05","date_gmt":"2024-11-26T03:38:05","guid":{"rendered":"https:\/\/fwq.ai\/blog\/34786\/"},"modified":"2024-11-26T11:38:05","modified_gmt":"2024-11-26T03:38:05","slug":"java%e4%b8%ad%e6%80%8e%e4%b9%88%e5%ae%9e%e4%be%8b%e5%8c%96%e5%a4%9a%e4%b8%aa%e6%95%b0%e7%bb%84","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/34786\/","title":{"rendered":"java\u4e2d\u600e\u4e48\u5b9e\u4f8b\u5316\u591a\u4e2a\u6570\u7ec4"},"content":{"rendered":"<blockquote><p>\n  java \u4e2d\u5b9e\u4f8b\u5316\u591a\u4e2a\u6570\u7ec4\u7684\u65b9\u6cd5\uff1a\u4f7f\u7528\u6570\u7ec4\u6587\u5b57\u76f4\u63a5\u8d4b\u503c\u3002\u5b9a\u4e49\u6570\u7ec4\u7c7b\u578b\u53ca\u957f\u5ea6\uff0c\u9010\u4e2a\u8d4b\u503c\u3002\u4f7f\u7528 arrays.copyof() \u65b9\u6cd5\u590d\u5236\u73b0\u6709\u6570\u7ec4\u3002\u4f7f\u7528 arrays.fill() \u65b9\u6cd5\u586b\u5145\u6570\u7ec4\u3002\u4f7f\u7528\u6d41\u6620\u5c04\u4e3a int \u6570\u7ec4\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/03\/2024110302515080260.jpg\" class=\"aligncenter\" title=\"java\u4e2d\u600e\u4e48\u5b9e\u4f8b\u5316\u591a\u4e2a\u6570\u7ec4\u63d2\u56fe\" alt=\"java\u4e2d\u600e\u4e48\u5b9e\u4f8b\u5316\u591a\u4e2a\u6570\u7ec4\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5728 Java \u4e2d\u5b9e\u4f8b\u5316\u591a\u4e2a\u6570\u7ec4<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u6709\u591a\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5b9e\u4f8b\u5316\u591a\u4e2a\u6570\u7ec4\uff1a<\/p>\n<p><strong>1. \u4f7f\u7528\u6570\u7ec4\u6587\u5b57<\/strong><\/p>\n<pre>int[] numbers1 = {1, 2, 3};\nint[] numbers2 = new int[]{4, 5, 6};<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. \u4f7f\u7528\u6570\u7ec4\u7c7b\u578b\u548c\u957f\u5ea6<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] numbers1 = new int[3];\nnumbers1[0] = 1;\nnumbers1[1] = 2;\nnumbers1[2] = 3;\n\nint[] numbers2 = new int[3];\nnumbers2[0] = 4;\nnumbers2[1] = 5;\nnumbers2[2] = 6;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>3. \u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5<\/strong><\/p>\n<pre>int[] numbers1 = {1, 2, 3};\nint[] numbers2 = Arrays.copyOf(numbers1, numbers1.length);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>4. \u4f7f\u7528 Arrays.fill() \u65b9\u6cd5<\/strong><\/p>\n<pre>int[] numbers1 = new int[3];\nArrays.fill(numbers1, 42);\n\nint[] numbers2 = new int[3];\nArrays.fill(numbers2, 42);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>5. \u4f7f\u7528\u6d41<\/strong><\/p>\n<pre>List&lt;Integer&gt; numbers1 = Arrays.asList(1, 2, 3);\nint[] array1 = numbers1.stream().mapToInt(i -&gt; i).toArray();\n\nList&lt;Integer&gt; numbers2 = Arrays.asList(4, 5, 6);\nint[] array2 = numbers2.stream().mapToInt(i -&gt; i).toArray();<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u4e2d\u600e\u4e48\u5b9e\u4f8b\u5316\u591a\u4e2a\u6570\u7ec4\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>java \u4e2d\u5b9e\u4f8b\u5316\u591a\u4e2a\u6570\u7ec4\u7684\u65b9\u6cd5\uff1a\u4f7f\u7528\u6570\u7ec4\u6587\u5b57\u76f4\u63a5\u8d4b\u503c\u3002\u5b9a\u4e49\u6570\u7ec4\u7c7b\u578b\u53ca\u957f\u5ea6\uff0c\u9010\u4e2a\u8d4b\u503c\u3002\u4f7f\u7528 arrays.copyof() \u65b9\u6cd5\u590d\u5236\u73b0\u6709\u6570\u7ec4\u3002\u4f7f\u7528 arrays.fill() \u65b9\u6cd5\u586b\u5145\u6570\u7ec4\u3002\u4f7f\u7528\u6d41\u6620\u5c04\u4e3a int \u6570\u7ec4\u3002 \u5982\u4f55\u5728 Java \u4e2d\u5b9e\u4f8b\u5316\u591a\u4e2a\u6570\u7ec4 \u5728 Java \u4e2d\uff0c\u6709\u591a\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5b9e\u4f8b\u5316\u591a\u4e2a\u6570\u7ec4\uff1a 1. \u4f7f\u7528\u6570\u7ec4\u6587\u5b57 int[] numbers1 = {1, 2, 3}; int[] numbers2 = new int[]{4, 5, 6}; \u767b\u5f55\u540e\u590d\u5236 2. \u4f7f\u7528\u6570\u7ec4\u7c7b\u578b\u548c\u957f\u5ea6 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] numbers1 = new int[3]; numbers1[0] = 1; numbers1[1] = 2; numbers1[2] = 3; int[] numbers2 = new int[3]; numbers2[0] = 4; [&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-34786","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34786","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=34786"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34786\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=34786"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=34786"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=34786"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}