Practical 13

Aim:- Refine the student manager program to manipulate the student information from files by using the DataInputStream and DataOutputStream. Assume suitable data.

JAVA Code :-

import java.lang.*;

import java.io.*;

public class pra13 {

    public static void main(String args[]) throws IOException

   {

        DataInputStream dataIS = new DataInputStream(new FileInputStream("ab.txt"));

        DataOutputStream dataOS = new DataOutputStream(new FileOutputStream("abc.txt"));

       

        String str;

        while ((str = dataIS.readLine()) != null)

       {

            String upper = str.toUpperCase();

            System.out.println(upper);

            dataOS.writeBytes(upper + "  ,");

        }

      

        dataIS.close();

        dataOS.close();

    }

}

  

Output:-