{"id":65287,"date":"2025-05-03T12:55:19","date_gmt":"2025-05-03T04:55:19","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65287\/"},"modified":"2025-05-03T12:55:19","modified_gmt":"2025-05-03T04:55:19","slug":"java-%e6%80%8e%e4%b9%88%e5%ae%9a%e4%b9%89%e5%ad%97%e7%ac%a6%e6%95%b0%e7%bb%84-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65287\/","title":{"rendered":"java \u600e\u4e48\u5b9a\u4e49\u5b57\u7b26\u6570\u7ec4"},"content":{"rendered":"

\n \u5728 java \u4e2d\uff0c\u5b57\u7b26\u6570\u7ec4\u53ef\u5b58\u50a8\u5b57\u7b26\uff0c\u53ef\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u5b9a\u4e49\uff1achararray = new char[size]\uff0c\u5176\u4e2d chararray \u4e3a\u6570\u7ec4\u540d\uff0csize \u4e3a\u6570\u7ec4\u5927\u5c0f\u3002\u8981\u8bbf\u95ee\u5143\u7d20\uff0c\u4f7f\u7528\u7d22\u5f15\uff08\u4ece 0 \u5f00\u59cb\uff0c\u6700\u9ad8\u4e3a size-1\uff09\uff1b\u8981\u4fee\u6539\u5143\u7d20\uff0c\u4f7f\u7528\u8d4b\u503c\u8fd0\u7b97\u7b26\uff1b\u8981\u83b7\u53d6\u957f\u5ea6\uff0c\u4f7f\u7528 length \u5c5e\u6027\u3002\u6ce8\u610f\uff0c\u5b57\u7b26\u6570\u7ec4\u662f\u4e0d\u53ef\u53d8\u7684\uff0c\u65e0\u6cd5\u66f4\u6539\u957f\u5ea6\uff0c\u4f46\u53ef\u4ee5\u4f7f\u7528 arrays.copyof() \u521b\u5efa\u65b0\u6570\u7ec4\u5e76\u8c03\u6574\u5927\u5c0f\u3002\n<\/p><\/blockquote>\n

\"java<\/p>\n

\u5728 Java \u4e2d\u5b9a\u4e49\u5b57\u7b26\u6570\u7ec4<\/strong><\/p>\n

\u5728 Java \u4e2d\uff0c\u5b57\u7b26\u6570\u7ec4\u662f\u4e00\u79cd\u6709\u5e8f\u96c6\u5408\uff0c\u7528\u4e8e\u5b58\u50a8\u5b57\u7b26\u3002\u5b83\u53ef\u4ee5\u7528\u6765\u5b58\u50a8\u5b57\u7b26\u4e32\u503c\u6216\u5b57\u7b26\u5e8f\u5217\u3002<\/p>\n

\u5b9a\u4e49\u5b57\u7b26\u6570\u7ec4<\/strong><\/p>\n

\u8981\u5b9a\u4e49\u5b57\u7b26\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a<\/p>\n

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

char[] charArray = new char[size];<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5176\u4e2d\uff1a<\/p>\n
    \n
  • charArray \u662f\u5b57\u7b26\u6570\u7ec4\u7684\u540d\u79f0\u3002<\/li>\n
  • size \u662f\u6570\u7ec4\u4e2d\u8981\u5b58\u50a8\u7684\u5b57\u7b26\u6570\u91cf\u3002<\/li>\n<\/ul>\n
    \u793a\u4f8b<\/strong><\/p>\n
    \u4ee5\u4e0b\u4ee3\u7801\u521b\u5efa\u4e00\u4e2a\u957f\u5ea6\u4e3a 5 \u7684\u5b57\u7b26\u6570\u7ec4\uff1a<\/p>\n
    char[] charArray = new char[5];<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u5b57\u7b26\u6570\u7ec4\u4e2d\u7684\u6240\u6709\u5143\u7d20\u90fd\u521d\u59cb\u5316\u4e3a Unicode \u5b57\u7b26 u0000 (\u7a7a\u5b57\u7b26)\u3002<\/p>\n
    \u8bbf\u95ee\u6570\u7ec4\u5143\u7d20<\/strong><\/p>\n
    \u8981\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u6570\u7ec4\u7d22\u5f15\u3002\u7d22\u5f15\u4ece 0 \u5f00\u59cb\uff0c\u6700\u9ad8\u7d22\u5f15\u4e3a size – 1\u3002<\/p>\n
    \u4ee5\u4e0b\u4ee3\u7801\u8bbf\u95ee\u7b2c\u4e00\u4e2a\u6570\u7ec4\u5143\u7d20\uff1a<\/p>\n
    char firstChar = charArray[0];<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u4fee\u6539\u6570\u7ec4\u5143\u7d20<\/strong><\/p>\n
    \u8981\u4fee\u6539\u6570\u7ec4\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u8d4b\u503c\u8fd0\u7b97\u7b26\u3002<\/p>\n
    \u4ee5\u4e0b\u4ee3\u7801\u5c06\u7b2c\u4e00\u4e2a\u6570\u7ec4\u5143\u7d20\u8bbe\u7f6e\u4e3a\u5b57\u6bcd ‘a’\uff1a<\/p>\n
    charArray[0] = 'a';<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u6570\u7ec4\u957f\u5ea6<\/strong><\/p>\n
    \u8981\u83b7\u53d6\u6570\u7ec4\u957f\u5ea6\uff0c\u53ef\u4ee5\u4f7f\u7528 length \u5c5e\u6027\u3002<\/p>\n
    int length = charArray.length;<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u6ce8\u610f<\/strong><\/p>\n
      \n
    • \u5b57\u7b26\u6570\u7ec4\u662f\u4e0d\u53ef\u53d8\u7684\uff0c\u8fd9\u610f\u5473\u7740\u4e00\u65e6\u521b\u5efa\uff0c\u5c31\u4e0d\u80fd\u66f4\u6539\u5176\u957f\u5ea6\u3002<\/li>\n
    • \u53ef\u4ee5\u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5\u521b\u5efa\u65b0\u6570\u7ec4\uff0c\u5e76\u8c03\u6574\u5927\u5c0f\u3002<\/li>\n<\/ul>\n
      \u4ee5\u4e0a\u5c31\u662fjava \u600e\u4e48\u5b9a\u4e49\u5b57\u7b26\u6570\u7ec4\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\uff0c\u5b57\u7b26\u6570\u7ec4\u53ef\u5b58\u50a8\u5b57\u7b26\uff0c\u53ef\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u5b9a\u4e49\uff1achararray = new char[size]\uff0c\u5176\u4e2d chararray \u4e3a\u6570\u7ec4\u540d\uff0csize \u4e3a\u6570\u7ec4\u5927\u5c0f\u3002\u8981\u8bbf\u95ee\u5143\u7d20\uff0c\u4f7f\u7528\u7d22\u5f15\uff08\u4ece 0 \u5f00\u59cb\uff0c\u6700\u9ad8\u4e3a size-1\uff09\uff1b\u8981\u4fee\u6539\u5143\u7d20\uff0c\u4f7f\u7528\u8d4b\u503c\u8fd0\u7b97\u7b26\uff1b\u8981\u83b7\u53d6\u957f\u5ea6\uff0c\u4f7f\u7528 length \u5c5e\u6027\u3002\u6ce8\u610f\uff0c\u5b57\u7b26\u6570\u7ec4\u662f\u4e0d\u53ef\u53d8\u7684\uff0c\u65e0\u6cd5\u66f4\u6539\u957f\u5ea6\uff0c\u4f46\u53ef\u4ee5\u4f7f\u7528 arrays.copyof() \u521b\u5efa\u65b0\u6570\u7ec4\u5e76\u8c03\u6574\u5927\u5c0f\u3002 \u5728 Java \u4e2d\u5b9a\u4e49\u5b57\u7b26\u6570\u7ec4 \u5728 Java \u4e2d\uff0c\u5b57\u7b26\u6570\u7ec4\u662f\u4e00\u79cd\u6709\u5e8f\u96c6\u5408\uff0c\u7528\u4e8e\u5b58\u50a8\u5b57\u7b26\u3002\u5b83\u53ef\u4ee5\u7528\u6765\u5b58\u50a8\u5b57\u7b26\u4e32\u503c\u6216\u5b57\u7b26\u5e8f\u5217\u3002 \u5b9a\u4e49\u5b57\u7b26\u6570\u7ec4 \u8981\u5b9a\u4e49\u5b57\u7b26\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b char[] charArray = new char[size]; \u767b\u5f55\u540e\u590d\u5236 \u5176\u4e2d\uff1a charArray \u662f\u5b57\u7b26\u6570\u7ec4\u7684\u540d\u79f0\u3002 size \u662f\u6570\u7ec4\u4e2d\u8981\u5b58\u50a8\u7684\u5b57\u7b26\u6570\u91cf\u3002 \u793a\u4f8b \u4ee5\u4e0b\u4ee3\u7801\u521b\u5efa\u4e00\u4e2a\u957f\u5ea6\u4e3a 5 \u7684\u5b57\u7b26\u6570\u7ec4\uff1a char[] charArray = new char[5]; \u767b\u5f55\u540e\u590d\u5236 \u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u5b57\u7b26\u6570\u7ec4\u4e2d\u7684\u6240\u6709\u5143\u7d20\u90fd\u521d\u59cb\u5316\u4e3a Unicode \u5b57\u7b26 u0000 (\u7a7a\u5b57\u7b26)\u3002 \u8bbf\u95ee\u6570\u7ec4\u5143\u7d20 \u8981\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u6570\u7ec4\u7d22\u5f15\u3002\u7d22\u5f15\u4ece 0 \u5f00\u59cb\uff0c\u6700\u9ad8\u7d22\u5f15\u4e3a […]<\/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-65287","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65287","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=65287"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65287\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65287"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65287"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65287"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}