{"id":66556,"date":"2025-05-03T15:37:38","date_gmt":"2025-05-03T07:37:38","guid":{"rendered":"https:\/\/fwq.ai\/blog\/66556\/"},"modified":"2025-05-03T15:37:38","modified_gmt":"2025-05-03T07:37:38","slug":"java%e6%80%8e%e4%b9%88%e4%bb%8e%e6%96%87%e4%bb%b6%e4%b8%ad%e8%af%bb%e5%8f%96%e6%95%b4%e5%9e%8b%e6%95%b0%e7%bb%84-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/66556\/","title":{"rendered":"java\u600e\u4e48\u4ece\u6587\u4ef6\u4e2d\u8bfb\u53d6\u6574\u578b\u6570\u7ec4"},"content":{"rendered":"

\n \u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u4ece\u6587\u4ef6\u4e2d\u8bfb\u53d6\u6574\u578b\u6570\u7ec4\uff1a1. \u6253\u5f00\u6587\u4ef6\uff1a\u4f7f\u7528 scanner \u7c7b\u521b\u5efa\u4e00\u4e2a file \u5bf9\u8c61\uff0c\u5e76\u7528 nextint() \u65b9\u6cd5\u8bfb\u53d6\u6bcf\u4e2a\u6574\u6570\u30022. \u521b\u5efa\u6570\u7ec4\uff1a\u6839\u636e\u6587\u4ef6\u7684\u6574\u6570\u6570\u91cf\u521b\u5efa\u6307\u5b9a\u5927\u5c0f\u7684\u6570\u7ec4\u30023. \u8bfb\u53d6\u6574\u6570\u5e76\u5b58\u50a8\u5728\u6570\u7ec4\u4e2d\uff1a\u4f7f\u7528\u5faa\u73af\u4ece\u6587\u4ef6\u4e2d\u8bfb\u53d6\u6bcf\u4e2a\u6574\u6570\uff0c\u5e76\u5c06\u5176\u5b58\u50a8\u5728\u6570\u7ec4\u4e2d\u3002\n<\/p><\/blockquote>\n

\"java\u600e\u4e48\u4ece\u6587\u4ef6\u4e2d\u8bfb\u53d6\u6574\u578b\u6570\u7ec4\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u4ece\u6587\u4ef6\u4e2d\u8bfb\u53d6\u6574\u578b\u6570\u7ec4<\/strong><\/p>\n

\u76f4\u63a5\u56de\u7b54\uff1a<\/strong><\/p>\n

\u4f7f\u7528 Java\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u4ece\u6587\u4ef6\u4e2d\u8bfb\u53d6\u6574\u578b\u6570\u7ec4\uff1a<\/p>\n

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

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

    \n
  1. \u6253\u5f00\u6587\u4ef6\uff1a<\/strong>\u4f7f\u7528 Scanner \u7c7b\u521b\u5efa\u4e00\u4e2a File \u5bf9\u8c61\uff0c\u5e76\u7528 nextInt() \u65b9\u6cd5\u8bfb\u53d6\u6bcf\u4e2a\u6574\u6570\u3002<\/li>\n
  2. \u521b\u5efa\u6570\u7ec4\uff1a<\/strong>\u6839\u636e\u6587\u4ef6\u7684\u6574\u6570\u6570\u91cf\u521b\u5efa\u6307\u5b9a\u5927\u5c0f\u7684\u6570\u7ec4\u3002<\/li>\n
  3. \u8bfb\u53d6\u6574\u6570\u5e76\u5b58\u50a8\u5728\u6570\u7ec4\u4e2d\uff1a<\/strong>\u4f7f\u7528\u5faa\u73af\u4ece\u6587\u4ef6\u4e2d\u8bfb\u53d6\u6bcf\u4e2a\u6574\u6570\uff0c\u5e76\u5c06\u5176\u5b58\u50a8\u5728\u6570\u7ec4\u4e2d\u3002<\/li>\n<\/ol>\n

    \u8be6\u7ec6\u4fe1\u606f\uff1a<\/strong><\/p>\n

    1. \u6253\u5f00\u6587\u4ef6\uff1a<\/strong><\/p>\n

    File file = new File(\"numbers.txt\");\nScanner scanner = new Scanner(file);<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    2. \u521b\u5efa\u6570\u7ec4\uff1a<\/strong><\/p>\n
    int[] numbers = new int[scanner.nextInt()];<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    3. \u8bfb\u53d6\u6574\u6570\u5e76\u5b58\u50a8\u5728\u6570\u7ec4\u4e2d\uff1a<\/strong><\/p>\n
    int i = 0;\nwhile (scanner.hasNextInt()) {\n    numbers[i++] = scanner.nextInt();\n}<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u793a\u4f8b\u4ee3\u7801\uff1a<\/strong><\/p>\n
    import java.io.File;\nimport java.util.Scanner;\n\npublic class ReadIntegerArrayFromFile {\n\n    public static void main(String[] args) {\n        File file = new File(\"numbers.txt\");\n\n        try (Scanner scanner = new Scanner(file)) {\n            int[] numbers = new int[scanner.nextInt()];\n            \n            int i = 0;\n            while (scanner.hasNextInt()) {\n                numbers[i++] = scanner.nextInt();\n            }\n\n            \/\/ \u4f7f\u7528 numbers \u6570\u7ec4...\n        } catch (Exception e) {\n            e.printStackTrace();\n        }\n    }\n}<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u6ce8\u610f\u4e8b\u9879\uff1a<\/strong><\/p>\n
      \n
    • \u786e\u4fdd\u6587\u4ef6\u5b58\u5728\u4e14\u5305\u542b\u683c\u5f0f\u6b63\u786e\u7684\u6574\u6570\u3002<\/li>\n
    • \u5982\u679c\u6587\u4ef6\u4e2d\u6ca1\u6709\u8db3\u591f\u7684\u6574\u6570\u6765\u586b\u5145\u6570\u7ec4\uff0c\u5219\u4f1a\u629b\u51fa ArrayIndexOutOfBoundsException \u5f02\u5e38\u3002<\/li>\n
    • \u4f7f\u7528 try-with-resources \u8bed\u6cd5\u81ea\u52a8\u5173\u95ed Scanner \u5bf9\u8c61\u3002<\/li>\n<\/ul>\n
      \u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u4ece\u6587\u4ef6\u4e2d\u8bfb\u53d6\u6574\u578b\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":"
      \u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u4ece\u6587\u4ef6\u4e2d\u8bfb\u53d6\u6574\u578b\u6570\u7ec4\uff1a1. \u6253\u5f00\u6587\u4ef6\uff1a\u4f7f\u7528 scanner \u7c7b\u521b\u5efa\u4e00\u4e2a file \u5bf9\u8c61\uff0c\u5e76\u7528 nextint() \u65b9\u6cd5\u8bfb\u53d6\u6bcf\u4e2a\u6574\u6570\u30022. \u521b\u5efa\u6570\u7ec4\uff1a\u6839\u636e\u6587\u4ef6\u7684\u6574\u6570\u6570\u91cf\u521b\u5efa\u6307\u5b9a\u5927\u5c0f\u7684\u6570\u7ec4\u30023. \u8bfb\u53d6\u6574\u6570\u5e76\u5b58\u50a8\u5728\u6570\u7ec4\u4e2d\uff1a\u4f7f\u7528\u5faa\u73af\u4ece\u6587\u4ef6\u4e2d\u8bfb\u53d6\u6bcf\u4e2a\u6574\u6570\uff0c\u5e76\u5c06\u5176\u5b58\u50a8\u5728\u6570\u7ec4\u4e2d\u3002 \u5982\u4f55\u4ece\u6587\u4ef6\u4e2d\u8bfb\u53d6\u6574\u578b\u6570\u7ec4 \u76f4\u63a5\u56de\u7b54\uff1a \u4f7f\u7528 Java\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u4ece\u6587\u4ef6\u4e2d\u8bfb\u53d6\u6574\u578b\u6570\u7ec4\uff1a \u6b65\u9aa4\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u6253\u5f00\u6587\u4ef6\uff1a\u4f7f\u7528 Scanner \u7c7b\u521b\u5efa\u4e00\u4e2a File \u5bf9\u8c61\uff0c\u5e76\u7528 nextInt() \u65b9\u6cd5\u8bfb\u53d6\u6bcf\u4e2a\u6574\u6570\u3002 \u521b\u5efa\u6570\u7ec4\uff1a\u6839\u636e\u6587\u4ef6\u7684\u6574\u6570\u6570\u91cf\u521b\u5efa\u6307\u5b9a\u5927\u5c0f\u7684\u6570\u7ec4\u3002 \u8bfb\u53d6\u6574\u6570\u5e76\u5b58\u50a8\u5728\u6570\u7ec4\u4e2d\uff1a\u4f7f\u7528\u5faa\u73af\u4ece\u6587\u4ef6\u4e2d\u8bfb\u53d6\u6bcf\u4e2a\u6574\u6570\uff0c\u5e76\u5c06\u5176\u5b58\u50a8\u5728\u6570\u7ec4\u4e2d\u3002 \u8be6\u7ec6\u4fe1\u606f\uff1a 1. \u6253\u5f00\u6587\u4ef6\uff1a File file = new File(“numbers.txt”); Scanner scanner = new Scanner(file); \u767b\u5f55\u540e\u590d\u5236 2. \u521b\u5efa\u6570\u7ec4\uff1a int[] numbers = new int[scanner.nextInt()]; \u767b\u5f55\u540e\u590d\u5236 3. \u8bfb\u53d6\u6574\u6570\u5e76\u5b58\u50a8\u5728\u6570\u7ec4\u4e2d\uff1a int i = 0; while (scanner.hasNextInt()) […]<\/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-66556","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66556","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=66556"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66556\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=66556"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=66556"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=66556"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}