{"id":40281,"date":"2024-11-26T16:56:22","date_gmt":"2024-11-26T08:56:22","guid":{"rendered":"https:\/\/fwq.ai\/blog\/40281\/"},"modified":"2024-11-26T16:56:22","modified_gmt":"2024-11-26T08:56:22","slug":"%e6%80%8e%e4%b9%88%e5%9c%a8java%e4%b8%ad%e5%8a%a8%e6%80%81%e8%be%93%e5%85%a5%e5%ad%97%e7%ac%a6%e4%b8%b2%e6%95%b0%e7%bb%84%e7%9a%84%e9%95%bf%e5%ba%a6","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/40281\/","title":{"rendered":"\u600e\u4e48\u5728java\u4e2d\u52a8\u6001\u8f93\u5165\u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u957f\u5ea6"},"content":{"rendered":"

\n \u5728 java \u4e2d\u52a8\u6001\u8f93\u5165\u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u957f\u5ea6\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528 arraylist \u7c7b\uff0c\u901a\u8fc7 add() \u65b9\u6cd5\u6dfb\u52a0\u5143\u7d20\u5e76\u4f7f\u7528 size() \u65b9\u6cd5\u83b7\u53d6\u957f\u5ea6\u3002\u4f7f\u7528 scanner \u7c7b\u4ece\u7528\u6237\u8f93\u5165\u4e2d\u8bfb\u53d6\u957f\u5ea6\uff0c\u7136\u540e\u521b\u5efa\u4e00\u4e2a\u5177\u6709\u6307\u5b9a\u957f\u5ea6\u7684\u6570\u7ec4\u3002\n<\/p><\/blockquote>\n

\"\u600e\u4e48\u5728java\u4e2d\u52a8\u6001\u8f93\u5165\u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u957f\u5ea6\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u5728 Java \u4e2d\u52a8\u6001\u8f93\u5165\u7684\u957f\u5ea6<\/strong><\/p>\n

\u5f15\u8a00<\/strong><\/p>\n

\u52a8\u6001\u8f93\u5165\u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u957f\u5ea6\u5141\u8bb8\u7a0b\u5e8f\u6839\u636e\u7528\u6237\u8f93\u5165\u6216\u5176\u4ed6\u52a8\u6001\u56e0\u7d20\u786e\u5b9a\u6570\u7ec4\u7684\u5927\u5c0f\u3002\u5b9e\u73b0\u8fd9\u4e00\u76ee\u6807\u6709\u51e0\u79cd\u65b9\u6cd5\uff0c\u672c\u7bc7\u6587\u7ae0\u5c06\u4ecb\u7ecd\u4e24\u79cd\u6700\u5e38\u89c1\u7684\u65b9\u5f0f\u3002<\/p>\n

\u65b9\u6cd5 1\uff1a\u4f7f\u7528 ArrayList<\/strong><\/p>\n

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

ArrayList \u662f Java \u4e2d\u4e00\u4e2a\u52a8\u6001\u6570\u7ec4\u7c7b\uff0c\u5b83\u5141\u8bb8\u60a8\u8f7b\u677e\u5730\u6dfb\u52a0\u548c\u5220\u9664\u5143\u7d20\u3002\u8981\u4f7f\u7528 ArrayList \u52a8\u6001\u8f93\u5165\u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u957f\u5ea6\uff0c\u8bf7\u6267\u884c\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n

    \n
  1. \n

    \u521b\u5efa\u4e00\u4e2a ArrayList\uff1a<\/p>\n

    ArrayList<String> myArray = new ArrayList<>();<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/li>\n
  2. \n
    \u4f7f\u7528 add() \u65b9\u6cd5\u6dfb\u52a0\u5143\u7d20\uff1a<\/p>\n
    myArray.add(\"\u5143\u7d20 1\");\nmyArray.add(\"\u5143\u7d20 2\");<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/li>\n
  3. \n
    \u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6\uff1a<\/p>\n
    int length = myArray.size();<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<\/ol>\n
    \u65b9\u6cd5 2\uff1a\u4f7f\u7528 Scanner<\/strong><\/p>\n
    Scanner \u7c7b\u5141\u8bb8\u60a8\u4ece\u7528\u6237\u8f93\u5165\u4e2d\u8bfb\u53d6\u6570\u636e\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u5b83\u6765\u63d0\u793a\u7528\u6237\u8f93\u5165\u6570\u7ec4\u7684\u957f\u5ea6\uff0c\u7136\u540e\u6839\u636e\u8f93\u5165\u521b\u5efa\u6570\u7ec4\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u4f7f\u7528 Scanner \u5b9e\u73b0\u5b83\u7684\u6b65\u9aa4\uff1a<\/p>\n
      \n
    1. \n
      \u5bfc\u5165 Scanner \u7c7b\uff1a<\/p>\n
      import java.util.Scanner;<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/li>\n
    2. \n
      \u521b\u5efa\u4e00\u4e2a Scanner \u5bf9\u8c61\uff1a<\/p>\n
      Scanner scanner = new Scanner(System.in);<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/li>\n
    3. \n
      \u63d0\u793a\u7528\u6237\u8f93\u5165\u6570\u7ec4\u7684\u957f\u5ea6\uff1a<\/p>\n
      System.out.println(\"\u8bf7\u8f93\u5165\u6570\u7ec4\u7684\u957f\u5ea6\uff1a\");<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/li>\n
    4. \n
      \u4f7f\u7528 Scanner \u8bfb\u53d6\u8f93\u5165\uff1a<\/p>\n
      int length = scanner.nextInt();<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/li>\n
    5. \n
      \u521b\u5efa\u4e00\u4e2a\u5177\u6709\u6307\u5b9a\u957f\u5ea6\u7684\u6570\u7ec4\uff1a<\/p>\n
      String[] myArray = new String[length];<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<\/ol>\n
      \u7ed3\u8bba<\/strong><\/p>\n
      \u4f7f\u7528 ArrayList \u6216 Scanner \u662f\u5728 Java \u4e2d\u52a8\u6001\u8f93\u5165\u5b57\u7b26\u4e32\u6570\u7ec4\u957f\u5ea6\u7684\u4e24\u79cd\u6709\u6548\u65b9\u6cd5\u3002\u9009\u62e9\u54ea\u79cd\u65b9\u6cd5\u53d6\u51b3\u4e8e\u60a8\u7684\u5177\u4f53\u60c5\u51b5\u548c\u504f\u597d\u3002<\/p>\n
      \u4ee5\u4e0a\u5c31\u662f\u600e\u4e48\u5728java\u4e2d\u52a8\u6001\u8f93\u5165\u7684\u957f\u5ea6\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":"
      \u5728 java \u4e2d\u52a8\u6001\u8f93\u5165\u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u957f\u5ea6\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528 arraylist \u7c7b\uff0c\u901a\u8fc7 add() \u65b9\u6cd5\u6dfb\u52a0\u5143\u7d20\u5e76\u4f7f\u7528 size() \u65b9\u6cd5\u83b7\u53d6\u957f\u5ea6\u3002\u4f7f\u7528 scanner \u7c7b\u4ece\u7528\u6237\u8f93\u5165\u4e2d\u8bfb\u53d6\u957f\u5ea6\uff0c\u7136\u540e\u521b\u5efa\u4e00\u4e2a\u5177\u6709\u6307\u5b9a\u957f\u5ea6\u7684\u6570\u7ec4\u3002 \u5982\u4f55\u5728 Java \u4e2d\u52a8\u6001\u8f93\u5165\u7684\u957f\u5ea6 \u5f15\u8a00 \u52a8\u6001\u8f93\u5165\u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u957f\u5ea6\u5141\u8bb8\u7a0b\u5e8f\u6839\u636e\u7528\u6237\u8f93\u5165\u6216\u5176\u4ed6\u52a8\u6001\u56e0\u7d20\u786e\u5b9a\u6570\u7ec4\u7684\u5927\u5c0f\u3002\u5b9e\u73b0\u8fd9\u4e00\u76ee\u6807\u6709\u51e0\u79cd\u65b9\u6cd5\uff0c\u672c\u7bc7\u6587\u7ae0\u5c06\u4ecb\u7ecd\u4e24\u79cd\u6700\u5e38\u89c1\u7684\u65b9\u5f0f\u3002 \u65b9\u6cd5 1\uff1a\u4f7f\u7528 ArrayList \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b ArrayList \u662f Java \u4e2d\u4e00\u4e2a\u52a8\u6001\u6570\u7ec4\u7c7b\uff0c\u5b83\u5141\u8bb8\u60a8\u8f7b\u677e\u5730\u6dfb\u52a0\u548c\u5220\u9664\u5143\u7d20\u3002\u8981\u4f7f\u7528 ArrayList \u52a8\u6001\u8f93\u5165\u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u957f\u5ea6\uff0c\u8bf7\u6267\u884c\u4ee5\u4e0b\u6b65\u9aa4\uff1a \u521b\u5efa\u4e00\u4e2a ArrayList\uff1a ArrayList<String> myArray = new ArrayList<>(); \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528 add() \u65b9\u6cd5\u6dfb\u52a0\u5143\u7d20\uff1a myArray.add(“\u5143\u7d20 1”); myArray.add(“\u5143\u7d20 2”); \u767b\u5f55\u540e\u590d\u5236 \u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6\uff1a int length = myArray.size(); \u767b\u5f55\u540e\u590d\u5236 \u65b9\u6cd5 2\uff1a\u4f7f\u7528 Scanner Scanner \u7c7b\u5141\u8bb8\u60a8\u4ece\u7528\u6237\u8f93\u5165\u4e2d\u8bfb\u53d6\u6570\u636e\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u5b83\u6765\u63d0\u793a\u7528\u6237\u8f93\u5165\u6570\u7ec4\u7684\u957f\u5ea6\uff0c\u7136\u540e\u6839\u636e\u8f93\u5165\u521b\u5efa\u6570\u7ec4\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u4f7f\u7528 Scanner \u5b9e\u73b0\u5b83\u7684\u6b65\u9aa4\uff1a […]<\/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-40281","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/40281","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=40281"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/40281\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=40281"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=40281"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=40281"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}