yingyu.java

2、 声明测试类TestStudent完成对多态性的测试：（1）在主方法中声明Student类的数组（含五个元素）。（2）生成五个对象存入数组

import java.io.*;
import java.util.*;
class yingyu
{
  public static void main(String[] args)
  {
    String fileName="D:/yingyu.txt";
    String line;
    try
    {
      BufferedReader in=new BufferedReader(new FileReader(fileName));
      line=in.readLine();
      while(line!=null)
      {
        StringTokenizer m=new StringTokenizer(line);
        while(m.hasMoreTokens())
        System.out.println(m.nextToken());
        line=in.readLine();
      }
      in.close();
     }
     catch(IOException iox)
     {
       System.out.println("Problem reading"+fileName);
      }
     }
}