{"id":65745,"date":"2025-05-03T08:45:50","date_gmt":"2025-05-03T00:45:50","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65745\/"},"modified":"2025-05-03T08:45:50","modified_gmt":"2025-05-03T00:45:50","slug":"java%e4%b8%ad%e5%ad%97%e7%ac%a6%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e6%89%a9%e5%ae%b9-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65745\/","title":{"rendered":"java\u4e2d\u5b57\u7b26\u6570\u7ec4\u600e\u4e48\u6269\u5bb9"},"content":{"rendered":"

\n java \u5b57\u7b26\u6570\u7ec4\u65e0\u6cd5\u76f4\u63a5\u6269\u5bb9\uff0c\u4f46\u53ef\u4ee5\u901a\u8fc7\u4e0b\u5217\u6b65\u9aa4\u53d8\u76f8\u6269\u5bb9\uff1a\u521b\u5efa\u65b0\u6570\u7ec4\uff0c\u957f\u5ea6\u4e3a\u539f\u6570\u7ec4\u7684\u4e24\u500d\u3002\u4f7f\u7528 system.arraycopy() \u590d\u5236\u539f\u6570\u7ec4\u5143\u7d20\u5230\u65b0\u6570\u7ec4\u3002\u5c06\u65b0\u6570\u7ec4\u8d4b\u503c\u7ed9\u539f\u53d8\u91cf\uff0c\u5373\u53ef\u4f7f\u7528\u539f\u53d8\u91cf\u8bbf\u95ee\u6269\u5bb9\u540e\u7684\u6570\u7ec4\u3002\n<\/p><\/blockquote>\n

\"java\u4e2d\u5b57\u7b26\u6570\u7ec4\u600e\u4e48\u6269\u5bb9\u63d2\u56fe\"<\/p>\n

Java \u5b57\u7b26\u6570\u7ec4\u6269\u5bb9<\/strong><\/p>\n

Java \u4e2d\u5b57\u7b26\u6570\u7ec4\u65e0\u6cd5\u76f4\u63a5\u6269\u5bb9\uff0c\u4f46\u53ef\u4ee5\u901a\u8fc7\u521b\u5efa\u65b0\u6570\u7ec4\u5e76\u590d\u5236\u73b0\u6709\u5143\u7d20\u6765\u5b9e\u73b0\u53d8\u76f8\u6269\u5bb9\u3002<\/p>\n

\u5177\u4f53\u6b65\u9aa4\uff1a<\/strong><\/p>\n

    \n
  1. \u521b\u5efa\u65b0\u6570\u7ec4\uff1a<\/strong>\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u957f\u5ea6\u6bd4\u539f\u6570\u7ec4\u5927\u3002\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u65b0\u6570\u7ec4\u7684\u957f\u5ea6\u4e3a\u539f\u6570\u7ec4\u957f\u5ea6\u7684\u4e24\u500d\u3002<\/li>\n<\/ol>\n
    char[] newArray = new char[originalArray.length * 2];<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      \n
    1.  \u590d\u5236\u73b0\u6709\u5143\u7d20\uff1a<\/strong>\u4f7f\u7528 System.arraycopy() \u65b9\u6cd5\u5c06\u539f\u6570\u7ec4\u7684\u5143\u7d20\u590d\u5236\u5230\u65b0\u6570\u7ec4\u4e2d\u3002<\/li>\n<\/ol>\n
      System.arraycopy(originalArray, 0, newArray, 0, originalArray.length);<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
        \n
      1.  \u5c06\u65b0\u6570\u7ec4\u8d4b\u503c\u7ed9\u539f\u53d8\u91cf\uff1a<\/strong>\u5c06\u65b0\u6570\u7ec4\u8d4b\u503c\u7ed9\u539f\u5148\u5b58\u50a8\u5b57\u7b26\u6570\u7ec4\u7684\u53d8\u91cf\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u4f7f\u7528\u539f\u53d8\u91cf\u8bbf\u95ee\u6269\u5bb9\u540e\u7684\u6570\u7ec4\u3002<\/li>\n<\/ol>\n
        originalArray = newArray;<\/pre>\n
         \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
        \u793a\u4f8b\uff1a<\/strong><\/p>\n
        \u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
        char[] originalArray = {'a', 'b', 'c', 'd'};\n\n\/\/ \u521b\u5efa\u65b0\u6570\u7ec4\uff0c\u957f\u5ea6\u4e3a\u539f\u6570\u7ec4\u7684\u4e24\u500d\nchar[] newArray = new char[originalArray.length * 2];\n\n\/\/ \u590d\u5236\u73b0\u6709\u5143\u7d20\nSystem.arraycopy(originalArray, 0, newArray, 0, originalArray.length);\n\n\/\/ \u5c06\u65b0\u6570\u7ec4\u8d4b\u503c\u7ed9\u539f\u53d8\u91cf\noriginalArray = newArray;\n\n\/\/ \u6dfb\u52a0\u65b0\u5143\u7d20\noriginalArray[4] = 'e';\noriginalArray[5] = 'f';\n\n\/\/ \u6253\u5370\u6269\u5bb9\u540e\u7684\u6570\u7ec4\nfor (char c : originalArray) {\n  System.out.print(c);\n}<\/pre>\n
         \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
        \u8f93\u51fa\uff1a<\/p>\n
        abcdef<\/pre>\n
         \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
        \u4ee5\u4e0a\u5c31\u662fjava\u4e2d\u5b57\u7b26\u6570\u7ec4\u600e\u4e48\u6269\u5bb9\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 \u5b57\u7b26\u6570\u7ec4\u65e0\u6cd5\u76f4\u63a5\u6269\u5bb9\uff0c\u4f46\u53ef\u4ee5\u901a\u8fc7\u4e0b\u5217\u6b65\u9aa4\u53d8\u76f8\u6269\u5bb9\uff1a\u521b\u5efa\u65b0\u6570\u7ec4\uff0c\u957f\u5ea6\u4e3a\u539f\u6570\u7ec4\u7684\u4e24\u500d\u3002\u4f7f\u7528 system.arraycopy() \u590d\u5236\u539f\u6570\u7ec4\u5143\u7d20\u5230\u65b0\u6570\u7ec4\u3002\u5c06\u65b0\u6570\u7ec4\u8d4b\u503c\u7ed9\u539f\u53d8\u91cf\uff0c\u5373\u53ef\u4f7f\u7528\u539f\u53d8\u91cf\u8bbf\u95ee\u6269\u5bb9\u540e\u7684\u6570\u7ec4\u3002 Java \u5b57\u7b26\u6570\u7ec4\u6269\u5bb9 Java \u4e2d\u5b57\u7b26\u6570\u7ec4\u65e0\u6cd5\u76f4\u63a5\u6269\u5bb9\uff0c\u4f46\u53ef\u4ee5\u901a\u8fc7\u521b\u5efa\u65b0\u6570\u7ec4\u5e76\u590d\u5236\u73b0\u6709\u5143\u7d20\u6765\u5b9e\u73b0\u53d8\u76f8\u6269\u5bb9\u3002 \u5177\u4f53\u6b65\u9aa4\uff1a \u521b\u5efa\u65b0\u6570\u7ec4\uff1a\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u957f\u5ea6\u6bd4\u539f\u6570\u7ec4\u5927\u3002\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u65b0\u6570\u7ec4\u7684\u957f\u5ea6\u4e3a\u539f\u6570\u7ec4\u957f\u5ea6\u7684\u4e24\u500d\u3002 char[] newArray = new char[originalArray.length * 2]; \u767b\u5f55\u540e\u590d\u5236 \u590d\u5236\u73b0\u6709\u5143\u7d20\uff1a\u4f7f\u7528 System.arraycopy() \u65b9\u6cd5\u5c06\u539f\u6570\u7ec4\u7684\u5143\u7d20\u590d\u5236\u5230\u65b0\u6570\u7ec4\u4e2d\u3002 System.arraycopy(originalArray, 0, newArray, 0, originalArray.length); \u767b\u5f55\u540e\u590d\u5236 \u5c06\u65b0\u6570\u7ec4\u8d4b\u503c\u7ed9\u539f\u53d8\u91cf\uff1a\u5c06\u65b0\u6570\u7ec4\u8d4b\u503c\u7ed9\u539f\u5148\u5b58\u50a8\u5b57\u7b26\u6570\u7ec4\u7684\u53d8\u91cf\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u4f7f\u7528\u539f\u53d8\u91cf\u8bbf\u95ee\u6269\u5bb9\u540e\u7684\u6570\u7ec4\u3002 originalArray = newArray; \u767b\u5f55\u540e\u590d\u5236 \u793a\u4f8b\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b char[] originalArray = {‘a’, ‘b’, ‘c’, ‘d’}; \/\/ \u521b\u5efa\u65b0\u6570\u7ec4\uff0c\u957f\u5ea6\u4e3a\u539f\u6570\u7ec4\u7684\u4e24\u500d char[] newArray = new char[originalArray.length * 2]; \/\/ \u590d\u5236\u73b0\u6709\u5143\u7d20 System.arraycopy(originalArray, 0, 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-65745","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65745","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=65745"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65745\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65745"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65745"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65745"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}