使用 StringTokenizer 进行类型转换

Question

我需要将nextToken（）的输出转换为int和double类型。我这样做的方式目前不起作用，并给我一个错误，说java.lang.String无法转换为int。谢谢！

     int id,age;
       String name;
       double gpa;
       String line = null;
  while( inputStream.hasNextLine())
   {
       line = inputStream.nextLine();
       size ++;
       StringTokenizer tokens  = new StringTokenizer(line," .,?"");
       while(tokens.hasMoreTokens())
       {
          id = (int) tokens.nextToken();   //need to convert this
          name = tokens.nextToken();
          age =(int) tokens.nextToken();   //need to convert this 
          gpa = (double) tokens.nextToken();  //need to convert this
       }
   }

Answer 1

试试这个：

id = Integer.parseInt(tokens.nextToken());