{"id":65251,"date":"2025-05-03T10:15:48","date_gmt":"2025-05-03T02:15:48","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65251\/"},"modified":"2025-05-03T10:15:48","modified_gmt":"2025-05-03T02:15:48","slug":"java%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e8%bf%9e%e6%8e%a5-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65251\/","title":{"rendered":"java\u6570\u7ec4\u600e\u4e48\u8fde\u63a5"},"content":{"rendered":"

\n java\u4e2d\u53ef\u4ee5\u4f7f\u7528system.arraycopy()\u3001arrays.copyof()\u548carrays.copyofrange()\u65b9\u6cd5\u8fde\u63a5\u6570\u7ec4\uff0c\u5206\u522b\u9002\u7528\u4e8e\u8fde\u63a5\u76f8\u540c\u7c7b\u578b\u7684\u6570\u7ec4\u5143\u7d20\u3001\u8fde\u63a5\u76f8\u540c\u7c7b\u578b\u7684\u6570\u7ec4\u5143\u7d20\u5e76\u8fd4\u56de\u65b0\u6570\u7ec4\u4ee5\u53ca\u8fde\u63a5\u4e0d\u540c\u7c7b\u578b\u7684\u6570\u7ec4\u5143\u7d20\u5e76\u8fd4\u56de\u4e00\u4e2aobject[]\u6570\u7ec4\u3002\n<\/p><\/blockquote>\n

\"java\u6570\u7ec4\u600e\u4e48\u8fde\u63a5\u63d2\u56fe\"<\/p>\n

Java\u6570\u7ec4\u8fde\u63a5<\/strong><\/p>\n

\u8fde\u63a5\u591a\u4e2aJava\u6570\u7ec4<\/strong><\/p>\n

\u5728Java\u4e2d\uff0c\u8fde\u63a5\u4e24\u4e2a\u6216\u591a\u4e2a\u6570\u7ec4\u53ef\u4ee5\u4f7f\u7528System.arraycopy()\u65b9\u6cd5\u3002\u8be5\u65b9\u6cd5\u63a5\u53d7\u4e09\u4e2a\u53c2\u6570\uff1a<\/p>\n

    \n
  1. \u6e90\u6570\u7ec4\uff1a<\/strong>\u5f85\u8fde\u63a5\u7684\u6570\u7ec4\u4e4b\u4e00\u3002<\/li>\n
  2. \u6e90\u6570\u7ec4\u8d77\u59cb\u7d22\u5f15\uff1a<\/strong>\u6e90\u6570\u7ec4\u4e2d\u8981\u5f00\u59cb\u590d\u5236\u5143\u7d20\u7684\u7d22\u5f15\u3002<\/li>\n
  3. \u76ee\u6807\u6570\u7ec4\uff1a<\/strong>\u7ed3\u679c\u6570\u7ec4\uff08\u8fde\u63a5\u7684\u6570\u7ec4\uff09\u3002<\/li>\n
  4. \u76ee\u6807\u6570\u7ec4\u8d77\u59cb\u7d22\u5f15\uff1a<\/strong>\u76ee\u6807\u6570\u7ec4\u4e2d\u8981\u5f00\u59cb\u590d\u5236\u5143\u7d20\u7684\u7d22\u5f15\u3002<\/li>\n
  5. \u590d\u5236\u7684\u5143\u7d20\u6570\uff1a<\/strong>\u8981\u4ece\u6e90\u6570\u7ec4\u590d\u5236\u5230\u76ee\u6807\u6570\u7ec4\u7684\u5143\u7d20\u6570\u3002<\/li>\n<\/ol>\n

    \u4ee5\u4e0b\u793a\u4f8b\u6f14\u793a\u5982\u4f55\u8fde\u63a5\u4e24\u4e2a\u6574\u6570\u6570\u7ec4\uff1a<\/p>\n

    \u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n

    int[] arr1 = {1, 2, 3};\nint[] arr2 = {4, 5, 6};\nint[] arr3 = new int[arr1.length + arr2.length];\n\nSystem.arraycopy(arr1, 0, arr3, 0, arr1.length);\nSystem.arraycopy(arr2, 0, arr3, arr1.length, arr2.length);\n\nfor (int i : arr3) {\n    System.out.print(i + \" \");\n}<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u8f93\u51fa\uff1a<\/p>\n
    1 2 3 4 5 6<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u8fde\u63a5\u76f8\u540c\u7c7b\u578b\u6570\u7ec4\u7684\u5143\u7d20<\/strong><\/p>\n
    \u9664\u4e86\u4f7f\u7528System.arraycopy()\u65b9\u6cd5\u5916\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528\u8bed\u6cd5\u7cd6Arrays.copyOf()\u548cArrays.copyOfRange()\u65b9\u6cd5\u6765\u8fde\u63a5\u76f8\u540c\u7c7b\u578b\u6570\u7ec4\u7684\u5143\u7d20\u3002<\/p>\n
    \u4ee5\u4e0b\u793a\u4f8b\u6f14\u793a\u5982\u4f55\u4f7f\u7528Arrays.copyOf()\u65b9\u6cd5\u8fde\u63a5\u4e24\u4e2a\uff1a<\/p>\n
    String[] arr1 = {\"a\", \"b\", \"c\"};\nString[] arr2 = {\"d\", \"e\", \"f\"};\nString[] arr3 = Arrays.copyOf(arr1, arr1.length + arr2.length);\nSystem.arraycopy(arr2, 0, arr3, arr1.length, arr2.length);\n\nfor (String str : arr3) {\n    System.out.print(str + \" \");\n}<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u8f93\u51fa\uff1a<\/p>\n
    a b c d e f<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u8fde\u63a5\u4e0d\u540c\u7c7b\u578b\u6570\u7ec4\u7684\u5143\u7d20<\/strong><\/p>\n
    \u5982\u679c\u8981\u8fde\u63a5\u4e0d\u540c\u7c7b\u578b\u6570\u7ec4\u7684\u5143\u7d20\uff0c\u5219\u53ef\u4ee5\u4f7f\u7528Object[]\u6570\u7ec4\uff0c\u8be5\u6570\u7ec4\u53ef\u4ee5\u5b58\u50a8\u4efb\u4f55\u7c7b\u578b\u7684\u5bf9\u8c61\u3002<\/p>\n
    \u4ee5\u4e0b\u793a\u4f8b\u6f14\u793a\u5982\u4f55\u4f7f\u7528Object[]\u6570\u7ec4\u8fde\u63a5\u4e00\u4e2a\u6574\u6570\u548c\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4\uff1a<\/p>\n
    int[] arr1 = {1, 2, 3};\nString[] arr2 = {\"a\", \"b\", \"c\"};\nObject[] arr3 = new Object[arr1.length + arr2.length];\n\nfor (int i = 0; i < arr1.length; i++) {\n    arr3[i] = arr1[i];\n}\n\nfor (int i = 0; i < arr2.length; i++) {\n    arr3[arr1.length + i] = arr2[i];\n}\n\nfor (Object obj : arr3) {\n    System.out.print(obj + \" \");\n}<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u8f93\u51fa\uff1a<\/p>\n
    1 2 3 a b c<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u600e\u4e48\u8fde\u63a5\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    java\u4e2d\u53ef\u4ee5\u4f7f\u7528system.arraycopy()\u3001arrays.copyof()\u548carrays.copyofrange()\u65b9\u6cd5\u8fde\u63a5\u6570\u7ec4\uff0c\u5206\u522b\u9002\u7528\u4e8e\u8fde\u63a5\u76f8\u540c\u7c7b\u578b\u7684\u6570\u7ec4\u5143\u7d20\u3001\u8fde\u63a5\u76f8\u540c\u7c7b\u578b\u7684\u6570\u7ec4\u5143\u7d20\u5e76\u8fd4\u56de\u65b0\u6570\u7ec4\u4ee5\u53ca\u8fde\u63a5\u4e0d\u540c\u7c7b\u578b\u7684\u6570\u7ec4\u5143\u7d20\u5e76\u8fd4\u56de\u4e00\u4e2aobject[]\u6570\u7ec4\u3002 Java\u6570\u7ec4\u8fde\u63a5 \u8fde\u63a5\u591a\u4e2aJava\u6570\u7ec4 \u5728Java\u4e2d\uff0c\u8fde\u63a5\u4e24\u4e2a\u6216\u591a\u4e2a\u6570\u7ec4\u53ef\u4ee5\u4f7f\u7528System.arraycopy()\u65b9\u6cd5\u3002\u8be5\u65b9\u6cd5\u63a5\u53d7\u4e09\u4e2a\u53c2\u6570\uff1a \u6e90\u6570\u7ec4\uff1a\u5f85\u8fde\u63a5\u7684\u6570\u7ec4\u4e4b\u4e00\u3002 \u6e90\u6570\u7ec4\u8d77\u59cb\u7d22\u5f15\uff1a\u6e90\u6570\u7ec4\u4e2d\u8981\u5f00\u59cb\u590d\u5236\u5143\u7d20\u7684\u7d22\u5f15\u3002 \u76ee\u6807\u6570\u7ec4\uff1a\u7ed3\u679c\u6570\u7ec4\uff08\u8fde\u63a5\u7684\u6570\u7ec4\uff09\u3002 \u76ee\u6807\u6570\u7ec4\u8d77\u59cb\u7d22\u5f15\uff1a\u76ee\u6807\u6570\u7ec4\u4e2d\u8981\u5f00\u59cb\u590d\u5236\u5143\u7d20\u7684\u7d22\u5f15\u3002 \u590d\u5236\u7684\u5143\u7d20\u6570\uff1a\u8981\u4ece\u6e90\u6570\u7ec4\u590d\u5236\u5230\u76ee\u6807\u6570\u7ec4\u7684\u5143\u7d20\u6570\u3002 \u4ee5\u4e0b\u793a\u4f8b\u6f14\u793a\u5982\u4f55\u8fde\u63a5\u4e24\u4e2a\u6574\u6570\u6570\u7ec4\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] arr1 = {1, 2, 3}; int[] arr2 = {4, 5, 6}; int[] arr3 = new int[arr1.length + arr2.length]; System.arraycopy(arr1, 0, arr3, 0, arr1.length); System.arraycopy(arr2, 0, arr3, arr1.length, arr2.length); for (int i : arr3) { System.out.print(i + ” “); } \u767b\u5f55\u540e\u590d\u5236 \u8f93\u51fa\uff1a 1 2 […]<\/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-65251","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65251","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=65251"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65251\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65251"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65251"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65251"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}