{"id":38560,"date":"2024-11-26T17:53:13","date_gmt":"2024-11-26T09:53:13","guid":{"rendered":"https:\/\/fwq.ai\/blog\/38560\/"},"modified":"2024-11-26T17:53:13","modified_gmt":"2024-11-26T09:53:13","slug":"java%e6%80%8e%e4%b9%88%e5%be%80%e6%95%b0%e7%bb%84%e9%87%8c%e6%b7%bb%e5%8a%a0%e6%95%b0%e5%ad%97","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/38560\/","title":{"rendered":"java\u600e\u4e48\u5f80\u6570\u7ec4\u91cc\u6dfb\u52a0\u6570\u5b57"},"content":{"rendered":"

\n java\u4e2d\u5411\u6570\u7ec4\u6dfb\u52a0\u6570\u5b57\u53ef\u4ee5\u901a\u8fc7\u4e24\u79cd\u65b9\u5f0f\uff1a\u521b\u5efa\u65b0\u6570\u7ec4\uff1a\u76f4\u63a5\u4f7f\u7528\u5927\u62ec\u53f7\u521d\u59cb\u5316\u5305\u542b\u6570\u5b57\u7684\u65b0\u6570\u7ec4\u3002\u4f7f\u7528\u73b0\u6709\u6570\u7ec4\uff1a\u901a\u8fc7system.arraycopy()\u65b9\u6cd5\u5c06\u73b0\u6709\u6570\u7ec4\u590d\u5236\u5230\u65b0\u6570\u7ec4\uff0c\u5e76\u5728\u65b0\u6570\u7ec4\u672b\u5c3e\u6dfb\u52a0\u6570\u5b57\u3002\u901a\u8fc7arrays.copyof()\u65b9\u6cd5\u8fd4\u56de\u73b0\u6709\u6570\u7ec4\u7684\u526f\u672c\uff0c\u5e76\u5728\u6b64\u526f\u672c\u672b\u5c3e\u6dfb\u52a0\u6570\u5b57\u3002\n<\/p><\/blockquote>\n

\"java\u600e\u4e48\u5f80\u6570\u7ec4\u91cc\u6dfb\u52a0\u6570\u5b57\u63d2\u56fe\"<\/p>\n

Java\u4e2d\u5411\u6570\u7ec4\u6dfb\u52a0\u6570\u5b57<\/strong><\/p>\n

\u5728Java\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4e24\u79cd\u4e3b\u8981\u65b9\u5f0f\u5411\u6570\u7ec4\u6dfb\u52a0\u6570\u5b57\uff1a\u521b\u5efa\u65b0\u6570\u7ec4\u6216\u4f7f\u7528\u73b0\u6709\u7684\u6570\u7ec4\u3002<\/p>\n

\u521b\u5efa\u65b0\u6570\u7ec4<\/strong><\/p>\n

\u5982\u679c\u60f3\u8981\u521b\u5efa\u4e00\u4e2a\u5305\u542b\u7279\u5b9a\u6570\u5b57\u7684\u65b0\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a<\/p>\n

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

int[] numbers = {1, 2, 3, 4, 5};<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8fd9\u5c06\u521b\u5efa\u4e00\u4e2a\u5305\u542b\u4e94\u4e2a\u6570\u5b57\u7684\u6570\u7ec4\u3002<\/p>\n
\u4f7f\u7528\u73b0\u6709\u6570\u7ec4<\/strong><\/p>\n
\u5982\u679c\u5df2\u6709\u4e00\u4e2a\u6570\u7ec4\u5e76\u4e14\u60f3\u8981\u5411\u5176\u4e2d\u6dfb\u52a0\u6570\u5b57\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4e24\u79cd\u65b9\u5f0f\uff1a<\/p>\n
    \n
  • \u4f7f\u7528System.arraycopy()\u65b9\u6cd5<\/strong><\/li>\n<\/ul>\n
    \u6b64\u65b9\u6cd5\u5141\u8bb8\u5c06\u4e00\u4e2a\u6570\u7ec4\u7684\u5143\u7d20\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\u3002\u4ee5\u4e0b\u4ee3\u7801\u663e\u793a\u4e86\u5982\u4f55\u4f7f\u7528\u5b83\uff1a<\/p>\n
    int[] existingArray = {1, 2, 3};\nint[] newArray = new int[existingArray.length + 1];\n\nSystem.arraycopy(existingArray, 0, newArray, 0, existingArray.length);\nnewArray[newArray.length - 1] = 4;<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u8fd9\u4f1a\u521b\u5efa\u4e00\u4e2a\u540d\u4e3anewArray\u7684\u65b0\u6570\u7ec4\uff0c\u5176\u4e2d\u5305\u542b\u539f\u59cb\u6570\u7ec4\u7684\u5143\u7d20\u4ee5\u53ca\u6570\u5b574\u3002<\/p>\n
      \n
    • \u4f7f\u7528Arrays.copyOf()\u65b9\u6cd5<\/strong><\/li>\n<\/ul>\n
      \u6b64\u65b9\u6cd5\u8fd4\u56de\u4e00\u4e2a\u5305\u542b\u73b0\u6709\u6570\u7ec4\u5143\u7d20\u7684\u526f\u672c\u3002\u4ee5\u4e0b\u4ee3\u7801\u663e\u793a\u4e86\u5982\u4f55\u4f7f\u7528\u5b83\uff1a<\/p>\n
      int[] existingArray = {1, 2, 3};\nint[] newArray = Arrays.copyOf(existingArray, existingArray.length + 1);\nnewArray[newArray.length - 1] = 4;<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      \u8fd9\u4e5f\u4f1a\u521b\u5efa\u4e00\u4e2a\u540d\u4e3anewArray\u7684\u65b0\u6570\u7ec4\uff0c\u5176\u4e2d\u5305\u542b\u539f\u59cb\u6570\u7ec4\u7684\u5143\u7d20\u4ee5\u53ca\u6570\u5b574\u3002<\/p>\n
      \u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u5f80\u6570\u7ec4\u91cc\u6dfb\u52a0\u6570\u5b57\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":"
      java\u4e2d\u5411\u6570\u7ec4\u6dfb\u52a0\u6570\u5b57\u53ef\u4ee5\u901a\u8fc7\u4e24\u79cd\u65b9\u5f0f\uff1a\u521b\u5efa\u65b0\u6570\u7ec4\uff1a\u76f4\u63a5\u4f7f\u7528\u5927\u62ec\u53f7\u521d\u59cb\u5316\u5305\u542b\u6570\u5b57\u7684\u65b0\u6570\u7ec4\u3002\u4f7f\u7528\u73b0\u6709\u6570\u7ec4\uff1a\u901a\u8fc7system.arraycopy()\u65b9\u6cd5\u5c06\u73b0\u6709\u6570\u7ec4\u590d\u5236\u5230\u65b0\u6570\u7ec4\uff0c\u5e76\u5728\u65b0\u6570\u7ec4\u672b\u5c3e\u6dfb\u52a0\u6570\u5b57\u3002\u901a\u8fc7arrays.copyof()\u65b9\u6cd5\u8fd4\u56de\u73b0\u6709\u6570\u7ec4\u7684\u526f\u672c\uff0c\u5e76\u5728\u6b64\u526f\u672c\u672b\u5c3e\u6dfb\u52a0\u6570\u5b57\u3002 Java\u4e2d\u5411\u6570\u7ec4\u6dfb\u52a0\u6570\u5b57 \u5728Java\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4e24\u79cd\u4e3b\u8981\u65b9\u5f0f\u5411\u6570\u7ec4\u6dfb\u52a0\u6570\u5b57\uff1a\u521b\u5efa\u65b0\u6570\u7ec4\u6216\u4f7f\u7528\u73b0\u6709\u7684\u6570\u7ec4\u3002 \u521b\u5efa\u65b0\u6570\u7ec4 \u5982\u679c\u60f3\u8981\u521b\u5efa\u4e00\u4e2a\u5305\u542b\u7279\u5b9a\u6570\u5b57\u7684\u65b0\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] numbers = {1, 2, 3, 4, 5}; \u767b\u5f55\u540e\u590d\u5236 \u8fd9\u5c06\u521b\u5efa\u4e00\u4e2a\u5305\u542b\u4e94\u4e2a\u6570\u5b57\u7684\u6570\u7ec4\u3002 \u4f7f\u7528\u73b0\u6709\u6570\u7ec4 \u5982\u679c\u5df2\u6709\u4e00\u4e2a\u6570\u7ec4\u5e76\u4e14\u60f3\u8981\u5411\u5176\u4e2d\u6dfb\u52a0\u6570\u5b57\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4e24\u79cd\u65b9\u5f0f\uff1a \u4f7f\u7528System.arraycopy()\u65b9\u6cd5 \u6b64\u65b9\u6cd5\u5141\u8bb8\u5c06\u4e00\u4e2a\u6570\u7ec4\u7684\u5143\u7d20\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\u3002\u4ee5\u4e0b\u4ee3\u7801\u663e\u793a\u4e86\u5982\u4f55\u4f7f\u7528\u5b83\uff1a int[] existingArray = {1, 2, 3}; int[] newArray = new int[existingArray.length + 1]; System.arraycopy(existingArray, 0, newArray, 0, existingArray.length); newArray[newArray.length – 1] = 4; \u767b\u5f55\u540e\u590d\u5236 \u8fd9\u4f1a\u521b\u5efa\u4e00\u4e2a\u540d\u4e3anewArray\u7684\u65b0\u6570\u7ec4\uff0c\u5176\u4e2d\u5305\u542b\u539f\u59cb\u6570\u7ec4\u7684\u5143\u7d20\u4ee5\u53ca\u6570\u5b574\u3002 \u4f7f\u7528Arrays.copyOf()\u65b9\u6cd5 \u6b64\u65b9\u6cd5\u8fd4\u56de\u4e00\u4e2a\u5305\u542b\u73b0\u6709\u6570\u7ec4\u5143\u7d20\u7684\u526f\u672c\u3002\u4ee5\u4e0b\u4ee3\u7801\u663e\u793a\u4e86\u5982\u4f55\u4f7f\u7528\u5b83\uff1a int[] existingArray = {1, 2, 3}; int[] newArray […]<\/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-38560","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/38560","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=38560"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/38560\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=38560"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=38560"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=38560"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}