{"id":65478,"date":"2025-05-03T15:41:47","date_gmt":"2025-05-03T07:41:47","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65478\/"},"modified":"2025-05-03T15:41:47","modified_gmt":"2025-05-03T07:41:47","slug":"java%e6%80%8e%e4%b9%88%e7%bb%99%e6%95%b0%e7%bb%84%e6%8f%92%e5%85%a5%e6%95%b0%e6%8d%ae-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65478\/","title":{"rendered":"java\u600e\u4e48\u7ed9\u6570\u7ec4\u63d2\u5165\u6570\u636e"},"content":{"rendered":"

\n \u5728 java \u4e2d\u5411\u6570\u7ec4\u63d2\u5165\u6570\u636e\u53ef\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\uff1a1. \u58f0\u660e\u5e76\u521d\u59cb\u5316\u6570\u7ec4\uff1b2. \u6269\u5c55\u6570\u7ec4\uff1a\u4f7f\u7528 arrays.copyof() \u521b\u5efa\u65b0\u6570\u7ec4\uff1b3. \u5728\u6269\u5c55\u7684\u6570\u7ec4\u4e2d\u6dfb\u52a0\u65b0\u5143\u7d20\uff1b4. \u5c06\u6269\u5c55\u7684\u6570\u7ec4\u5206\u914d\u7ed9\u539f\u59cb\u6570\u7ec4\uff1b5. \u68c0\u67e5\u7ed3\u679c\u3002\n<\/p><\/blockquote>\n

\"java\u600e\u4e48\u7ed9\u6570\u7ec4\u63d2\u5165\u6570\u636e\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u5728 Java \u4e2d\u5411\u6570\u7ec4\u63d2\u5165\u6570\u636e<\/strong><\/p>\n

\u5411 Java \u6570\u7ec4\u4e2d\u63d2\u5165\u6570\u636e\u7684\u6b65\u9aa4\u5982\u4e0b\uff1a<\/p>\n

    \n
  1. \n

    \u58f0\u660e\u5e76\u521d\u59cb\u5316\u6570\u7ec4<\/strong><\/p>\n

    int[] numbers = { 1, 2, 3 };<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/li>\n
  2. \n
    \u7528\u65b0\u5143\u7d20\u6269\u5c55\u6570\u7ec4<\/strong><\/p>\n
    \u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
    Java \u4e2d\u7684\u6570\u7ec4\u662f\u56fa\u5b9a\u5927\u5c0f\u7684\uff0c\u56e0\u6b64\u5728\u63d2\u5165\u65b0\u5143\u7d20\u4e4b\u524d\u9700\u8981\u6269\u5c55\u6570\u7ec4\u3002\u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5\u6269\u5c55\u6570\u7ec4\uff0c\u5e76\u521b\u5efa\u65b0\u6570\u7ec4\u6765\u4fdd\u5b58\u539f\u59cb\u6570\u7ec4\u548c\u65b0\u5143\u7d20\u3002<\/p>\n
    int[] newArray = Arrays.copyOf(numbers, numbers.length + 1);<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/li>\n
  3. \n
    \u5728\u6269\u5c55\u7684\u6570\u7ec4\u4e2d\u6dfb\u52a0\u65b0\u5143\u7d20<\/strong><\/p>\n
    \u6269\u5c55\u540e\uff0c\u53ef\u4ee5\u5c06\u65b0\u5143\u7d20\u6dfb\u52a0\u5230\u6570\u7ec4\u4e2d\u3002\u4f7f\u7528\u6570\u7ec4\u7d22\u5f15\u6765\u8bbe\u7f6e\u503c\u3002<\/p>\n
    newArray[newArray.length - 1] = 4;<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/li>\n
  4. \n
    \u5c06\u6269\u5c55\u7684\u6570\u7ec4\u5206\u914d\u7ed9\u539f\u59cb\u6570\u7ec4<\/strong><\/p>\n
    \u5c06\u6269\u5c55\u7684\u6570\u7ec4\u5206\u914d\u7ed9\u539f\u59cb\u6570\u7ec4\uff0c\u4ee5\u66f4\u65b0\u5bf9\u6570\u7ec4\u7684\u5f15\u7528\u3002<\/p>\n
    numbers = newArray;<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/li>\n
  5. \n
    \u68c0\u67e5\u7ed3\u679c<\/strong><\/p>\n
    \u4f7f\u7528 Arrays.toString() \u65b9\u6cd5\u68c0\u67e5\u7ed3\u679c\u6570\u7ec4\u3002<\/p>\n
    System.out.println(Arrays.toString(numbers));<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<\/ol>\n
    \u8f93\u51fa\uff1a<\/strong><\/p>\n
    [1, 2, 3, 4]<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u793a\u4f8b\u4ee3\u7801\uff1a<\/strong><\/p>\n
    public class ArrayInsert {\n\n    public static void main(String[] args) {\n        int[] numbers = { 1, 2, 3 };\n        \n        \/\/ \u6269\u5c55\u6570\u7ec4\n        int[] newArray = Arrays.copyOf(numbers, numbers.length + 1);\n        \n        \/\/ \u6dfb\u52a0\u65b0\u5143\u7d20\n        newArray[newArray.length - 1] = 4;\n        \n        \/\/ \u66f4\u65b0\u539f\u59cb\u6570\u7ec4\n        numbers = newArray;\n        \n        \/\/ \u68c0\u67e5\u7ed3\u679c\n        System.out.println(Arrays.toString(numbers));\n    }\n}<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u7ed9\u6570\u7ec4\u63d2\u5165\u6570\u636e\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u5728 java \u4e2d\u5411\u6570\u7ec4\u63d2\u5165\u6570\u636e\u53ef\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\uff1a1. \u58f0\u660e\u5e76\u521d\u59cb\u5316\u6570\u7ec4\uff1b2. \u6269\u5c55\u6570\u7ec4\uff1a\u4f7f\u7528 arrays.copyof() \u521b\u5efa\u65b0\u6570\u7ec4\uff1b3. \u5728\u6269\u5c55\u7684\u6570\u7ec4\u4e2d\u6dfb\u52a0\u65b0\u5143\u7d20\uff1b4. \u5c06\u6269\u5c55\u7684\u6570\u7ec4\u5206\u914d\u7ed9\u539f\u59cb\u6570\u7ec4\uff1b5. \u68c0\u67e5\u7ed3\u679c\u3002 \u5982\u4f55\u5728 Java \u4e2d\u5411\u6570\u7ec4\u63d2\u5165\u6570\u636e \u5411 Java \u6570\u7ec4\u4e2d\u63d2\u5165\u6570\u636e\u7684\u6b65\u9aa4\u5982\u4e0b\uff1a \u58f0\u660e\u5e76\u521d\u59cb\u5316\u6570\u7ec4 int[] numbers = { 1, 2, 3 }; \u767b\u5f55\u540e\u590d\u5236 \u7528\u65b0\u5143\u7d20\u6269\u5c55\u6570\u7ec4 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b Java \u4e2d\u7684\u6570\u7ec4\u662f\u56fa\u5b9a\u5927\u5c0f\u7684\uff0c\u56e0\u6b64\u5728\u63d2\u5165\u65b0\u5143\u7d20\u4e4b\u524d\u9700\u8981\u6269\u5c55\u6570\u7ec4\u3002\u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5\u6269\u5c55\u6570\u7ec4\uff0c\u5e76\u521b\u5efa\u65b0\u6570\u7ec4\u6765\u4fdd\u5b58\u539f\u59cb\u6570\u7ec4\u548c\u65b0\u5143\u7d20\u3002 int[] newArray = Arrays.copyOf(numbers, numbers.length + 1); \u767b\u5f55\u540e\u590d\u5236 \u5728\u6269\u5c55\u7684\u6570\u7ec4\u4e2d\u6dfb\u52a0\u65b0\u5143\u7d20 \u6269\u5c55\u540e\uff0c\u53ef\u4ee5\u5c06\u65b0\u5143\u7d20\u6dfb\u52a0\u5230\u6570\u7ec4\u4e2d\u3002\u4f7f\u7528\u6570\u7ec4\u7d22\u5f15\u6765\u8bbe\u7f6e\u503c\u3002 newArray[newArray.length – 1] = 4; \u767b\u5f55\u540e\u590d\u5236 \u5c06\u6269\u5c55\u7684\u6570\u7ec4\u5206\u914d\u7ed9\u539f\u59cb\u6570\u7ec4 \u5c06\u6269\u5c55\u7684\u6570\u7ec4\u5206\u914d\u7ed9\u539f\u59cb\u6570\u7ec4\uff0c\u4ee5\u66f4\u65b0\u5bf9\u6570\u7ec4\u7684\u5f15\u7528\u3002 numbers = newArray; \u767b\u5f55\u540e\u590d\u5236 \u68c0\u67e5\u7ed3\u679c […]<\/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-65478","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65478","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=65478"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65478\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65478"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65478"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65478"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}