{"id":65640,"date":"2025-05-03T11:42:44","date_gmt":"2025-05-03T03:42:44","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65640\/"},"modified":"2025-05-03T11:42:44","modified_gmt":"2025-05-03T03:42:44","slug":"java%e6%80%8e%e4%b9%88%e7%94%a8%e6%96%b9%e6%b3%95%e8%8e%b7%e5%8f%96%e6%95%b0%e7%bb%84-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65640\/","title":{"rendered":"java\u600e\u4e48\u7528\u65b9\u6cd5\u83b7\u53d6\u6570\u7ec4"},"content":{"rendered":"<blockquote><p>\n  \u6709\u516d\u79cd\u65b9\u6cd5\u5728 java \u4e2d\u83b7\u53d6\u6570\u7ec4\uff1a\u76f4\u63a5\u58f0\u660e\uff0c\u4f7f\u7528 new \u5173\u952e\u5b57\u521b\u5efa\uff0c\u4ece\u53e6\u4e00\u4e2a\u6570\u7ec4\u590d\u5236\uff0c\u4f7f\u7528 arrays.copyof() \u65b9\u6cd5\uff0c\u4f7f\u7528 arrays.copyofrange() \u65b9\u6cd5\uff0c\u4ee5\u53ca\u4f7f\u7528 stream.toarray() \u65b9\u6cd5\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111306094042431.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u7528\u65b9\u6cd5\u83b7\u53d6\u6570\u7ec4\u63d2\u56fe\" alt=\"java\u600e\u4e48\u7528\u65b9\u6cd5\u83b7\u53d6\u6570\u7ec4\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u4f7f\u7528 Java \u65b9\u6cd5\u83b7\u53d6\u6570\u7ec4<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u6709\u51e0\u79cd\u65b9\u6cd5\u53ef\u4ee5\u83b7\u53d6\u6570\u7ec4\uff1a<\/p>\n<p><strong>1. \u76f4\u63a5\u58f0\u660e\u5e76\u521d\u59cb\u5316\u6570\u7ec4<\/strong><\/p>\n<pre>int[] numbers = {1, 2, 3, 4, 5};<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. \u4f7f\u7528 new \u5173\u952e\u5b57\u521b\u5efa\u6570\u7ec4<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] numbers = new int[5];<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u7136\u540e\u4f7f\u7528\u7d22\u5f15\u4e3a\u6570\u7ec4\u5143\u7d20\u8d4b\u503c\uff1a<\/p>\n<pre>numbers[0] = 1;\nnumbers[1] = 2;\nnumbers[2] = 3;\nnumbers[3] = 4;\nnumbers[4] = 5;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>3. \u4ece\u53e6\u4e00\u4e2a\u6570\u7ec4\u4e2d\u590d\u5236\u6570\u7ec4<\/strong><\/p>\n<pre>int[] numbers1 = {1, 2, 3, 4, 5};\nint[] numbers2 = new int[numbers1.length];\nSystem.arraycopy(numbers1, 0, numbers2, 0, numbers1.length);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>4. \u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5<\/strong><\/p>\n<pre>int[] numbers1 = {1, 2, 3, 4, 5};\nint[] numbers2 = Arrays.copyOf(numbers1, numbers1.length);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>5. \u4f7f\u7528 Arrays.copyOfRange() \u65b9\u6cd5<\/strong><\/p>\n<pre>int[] numbers1 = {1, 2, 3, 4, 5};\nint[] numbers2 = Arrays.copyOfRange(numbers1, 1, 3); \/\/ \u590d\u5236\u4ece\u7d22\u5f15 1 \u5230 2\uff08\u4e0d\u5305\u62ec\uff09\u7684\u5143\u7d20<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>6. \u4f7f\u7528 Stream.toArray() \u65b9\u6cd5<\/strong><\/p>\n<pre>List&lt;Integer&gt; list = Arrays.asList(1, 2, 3, 4, 5);\nint[] numbers = list.stream().mapToInt(Integer::intValue).toArray();<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u7528\u65b9\u6cd5\u83b7\u53d6\u6570\u7ec4\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>\u6709\u516d\u79cd\u65b9\u6cd5\u5728 java \u4e2d\u83b7\u53d6\u6570\u7ec4\uff1a\u76f4\u63a5\u58f0\u660e\uff0c\u4f7f\u7528 new \u5173\u952e\u5b57\u521b\u5efa\uff0c\u4ece\u53e6\u4e00\u4e2a\u6570\u7ec4\u590d\u5236\uff0c\u4f7f\u7528 arrays.copyof() \u65b9\u6cd5\uff0c\u4f7f\u7528 arrays.copyofrange() \u65b9\u6cd5\uff0c\u4ee5\u53ca\u4f7f\u7528 stream.toarray() \u65b9\u6cd5\u3002 \u5982\u4f55\u4f7f\u7528 Java \u65b9\u6cd5\u83b7\u53d6\u6570\u7ec4 \u5728 Java \u4e2d\uff0c\u6709\u51e0\u79cd\u65b9\u6cd5\u53ef\u4ee5\u83b7\u53d6\u6570\u7ec4\uff1a 1. \u76f4\u63a5\u58f0\u660e\u5e76\u521d\u59cb\u5316\u6570\u7ec4 int[] numbers = {1, 2, 3, 4, 5}; \u767b\u5f55\u540e\u590d\u5236 2. \u4f7f\u7528 new \u5173\u952e\u5b57\u521b\u5efa\u6570\u7ec4 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] numbers = new int[5]; \u767b\u5f55\u540e\u590d\u5236 \u7136\u540e\u4f7f\u7528\u7d22\u5f15\u4e3a\u6570\u7ec4\u5143\u7d20\u8d4b\u503c\uff1a numbers[0] = 1; numbers[1] = 2; numbers[2] = 3; numbers[3] = 4; numbers[4] = 5; [&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-65640","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65640","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=65640"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65640\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65640"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65640"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65640"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}