{"id":65396,"date":"2025-05-03T10:56:52","date_gmt":"2025-05-03T02:56:52","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65396\/"},"modified":"2025-05-03T10:56:52","modified_gmt":"2025-05-03T02:56:52","slug":"java-object%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e6%b7%bb%e5%8a%a0-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65396\/","title":{"rendered":"java object\u6570\u7ec4\u600e\u4e48\u6dfb\u52a0"},"content":{"rendered":"<blockquote><p>\n  \u5728 java \u4e2d\uff0c\u5411\u5bf9\u8c61\u6570\u7ec4\u6dfb\u52a0\u5143\u7d20\u53ef\u4ee5\u901a\u8fc7\u4e24\u79cd\u65b9\u6cd5\u5b9e\u73b0\uff1a\u4f7f\u7528 arrays.copyof() \u6269\u5c55\u6570\u7ec4\u5bb9\u91cf\u5e76\u6dfb\u52a0\u5143\u7d20\u3002\u4f7f\u7528 system.arraycopy() \u590d\u5236\u73b0\u6709\u6570\u7ec4\u5e76\u6dfb\u52a0\u5143\u7d20\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/12\/2024111223184286131.jpg\" class=\"aligncenter\" title=\"java object\u6570\u7ec4\u600e\u4e48\u6dfb\u52a0\u63d2\u56fe\" alt=\"java object\u6570\u7ec4\u600e\u4e48\u6dfb\u52a0\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5411 Java \u5bf9\u8c61\u6570\u7ec4\u6dfb\u52a0\u5143\u7d20<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u5bf9\u8c61\u6570\u7ec4\u662f\u4e00\u79cd\u53ef\u4ee5\u5b58\u50a8\u4efb\u610f\u6570\u636e\u7c7b\u578b\u7684\u5143\u7d20\u7684\u6570\u636e\u7ed3\u6784\u3002\u4e86\u89e3\u5982\u4f55\u5411\u5bf9\u8c61\u6570\u7ec4\u6dfb\u52a0\u5143\u7d20\u5bf9\u4e8e\u9ad8\u6548\u7ba1\u7406\u548c\u5904\u7406\u6570\u636e\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<p><strong>\u65b9\u6cd5 1\uff1a\u4f7f\u7528 Arrays.copyOf()<\/strong><\/p>\n<p>Arrays.copyOf() \u65b9\u6cd5\u8fd4\u56de\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5b83\u662f\u6307\u5b9a\u6570\u7ec4\u7684\u526f\u672c\uff0c\u5e76\u5177\u6709\u6307\u5b9a\u7684\u957f\u5ea6\u3002\u53ef\u4ee5\u901a\u8fc7\u6307\u5b9a\u590d\u5236\u6570\u7ec4\u7684\u957f\u5ea6\u6765\u589e\u52a0\u5176\u5bb9\u91cf\uff0c\u4ece\u800c\u5411\u5176\u4e2d\u6dfb\u52a0\u5143\u7d20\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>\/\/ \u521b\u5efa\u4e00\u4e2a\u6570\u7ec4 [1, 2, 3]\nint[] array = {1, 2, 3};\n\n\/\/ \u4f7f\u7528 Arrays.copyOf() \u5c06\u6570\u7ec4\u5bb9\u91cf\u589e\u52a0\u5230 5\nint[] newArray = Arrays.copyOf(array, 5);\n\n\/\/ \u5411 newArray \u6dfb\u52a0\u5143\u7d20 4 \u548c 5\nnewArray[3] = 4;\nnewArray[4] = 5;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u65b9\u6cd5 2\uff1a\u4f7f\u7528 System.arraycopy()<\/strong><\/p>\n<p>System.arraycopy() \u65b9\u6cd5\u5c06\u4e00\u4e2a\u6570\u7ec4\u7684\u4e00\u90e8\u5206\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\u3002\u53ef\u4ee5\u901a\u8fc7\u6307\u5b9a\u6e90\u6570\u7ec4\u3001\u76ee\u6807\u6570\u7ec4\u3001\u76ee\u6807\u6570\u7ec4\u4e2d\u7684\u5f00\u59cb\u4f4d\u7f6e\u548c\u8981\u590d\u5236\u7684\u5143\u7d20\u6570\u91cf\u6765\u5411\u5bf9\u8c61\u6570\u7ec4\u6dfb\u52a0\u5143\u7d20\uff1a<\/p>\n<pre>\/\/ \u521b\u5efa\u4e00\u4e2a\u6570\u7ec4 [1, 2, 3]\nint[] array = {1, 2, 3};\n\n\/\/ \u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4 [1, 2, 3, 4, 5]\nint[] newArray = new int[5];\n\n\/\/ \u4f7f\u7528 System.arraycopy() \u5c06 array \u590d\u5236\u5230 newArray\nSystem.arraycopy(array, 0, newArray, 0, array.length);\n\n\/\/ \u5411 newArray \u6dfb\u52a0\u5143\u7d20 4 \u548c 5\nnewArray[3] = 4;\nnewArray[4] = 5;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava object\u6570\u7ec4\u600e\u4e48\u6dfb\u52a0\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>\u5728 java \u4e2d\uff0c\u5411\u5bf9\u8c61\u6570\u7ec4\u6dfb\u52a0\u5143\u7d20\u53ef\u4ee5\u901a\u8fc7\u4e24\u79cd\u65b9\u6cd5\u5b9e\u73b0\uff1a\u4f7f\u7528 arrays.copyof() \u6269\u5c55\u6570\u7ec4\u5bb9\u91cf\u5e76\u6dfb\u52a0\u5143\u7d20\u3002\u4f7f\u7528 system.arraycopy() \u590d\u5236\u73b0\u6709\u6570\u7ec4\u5e76\u6dfb\u52a0\u5143\u7d20\u3002 \u5982\u4f55\u5411 Java \u5bf9\u8c61\u6570\u7ec4\u6dfb\u52a0\u5143\u7d20 \u5728 Java \u4e2d\uff0c\u5bf9\u8c61\u6570\u7ec4\u662f\u4e00\u79cd\u53ef\u4ee5\u5b58\u50a8\u4efb\u610f\u6570\u636e\u7c7b\u578b\u7684\u5143\u7d20\u7684\u6570\u636e\u7ed3\u6784\u3002\u4e86\u89e3\u5982\u4f55\u5411\u5bf9\u8c61\u6570\u7ec4\u6dfb\u52a0\u5143\u7d20\u5bf9\u4e8e\u9ad8\u6548\u7ba1\u7406\u548c\u5904\u7406\u6570\u636e\u81f3\u5173\u91cd\u8981\u3002 \u65b9\u6cd5 1\uff1a\u4f7f\u7528 Arrays.copyOf() Arrays.copyOf() \u65b9\u6cd5\u8fd4\u56de\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5b83\u662f\u6307\u5b9a\u6570\u7ec4\u7684\u526f\u672c\uff0c\u5e76\u5177\u6709\u6307\u5b9a\u7684\u957f\u5ea6\u3002\u53ef\u4ee5\u901a\u8fc7\u6307\u5b9a\u590d\u5236\u6570\u7ec4\u7684\u957f\u5ea6\u6765\u589e\u52a0\u5176\u5bb9\u91cf\uff0c\u4ece\u800c\u5411\u5176\u4e2d\u6dfb\u52a0\u5143\u7d20\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \/\/ \u521b\u5efa\u4e00\u4e2a\u6570\u7ec4 [1, 2, 3] int[] array = {1, 2, 3}; \/\/ \u4f7f\u7528 Arrays.copyOf() \u5c06\u6570\u7ec4\u5bb9\u91cf\u589e\u52a0\u5230 5 int[] newArray = Arrays.copyOf(array, 5); \/\/ \u5411 newArray \u6dfb\u52a0\u5143\u7d20 4 \u548c 5 newArray[3] = 4; newArray[4] = 5; \u767b\u5f55\u540e\u590d\u5236 \u65b9\u6cd5 [&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-65396","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65396","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=65396"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65396\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65396"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65396"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65396"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}