Question

我得到的运行时错误是：

----jGRASP exec: javac -g Programmmm1.java

Programmmm1.java:95: error: cannot find symbol
      StringTokenizer token = new StringTokenizer(infile.nextLine());
      ^
  symbol:   class StringTokenizer
  location: class Programmmm1
Programmmm1.java:95: error: cannot find symbol
      StringTokenizer token = new StringTokenizer(infile.nextLine());

这是我的实际细分，为什么说它找不到符号？它与我的Main有关吗？

 public static void Display()throws IOException, FileNotFoundException
   {
      Scanner infile = new Scanner(new FileReader("G:\\DataFile.txt")); 
      StringTokenizer token = new StringTokenizer(infile.nextLine());
      StringElement str = new StringElement();

      while(token.hasMoreTokens())
      {
         str.setString(token.nextToken());
         stringList.insert(str);
      }
      stringList.print();
   }

Answer 1

您需要在导入语句中添加它

import java.util.StringTokenizer;

<强>更新

 public static void Display()throws IOException, FileNotFoundException
 {
    Scanner infile = new Scanner(new FileReader("G:\\DataFile.txt"));
    StringTokenizer token = null;
    String line=null;
    while((line=infile.nextLine())!=null && !"".equals(line.trim()))
    {
        token = new StringTokenizer(line);
        StringElement str = new StringElement();

         while(token.hasMoreTokens())
         {
            str.setString(token.nextToken());
            stringList.insert(str);
         }
    }
    stringList.print();
}

运行时错误。请让我理解我做错了什么

1 个答案: