Practical 12: Refine the student manager program to manipulate the student information from files by using the BufferedReader and BufferedWriter

Program:

import java.io.*;

import java.util.*;

class practical12

{

public static void main(String pqr[]) throws Exception

{

        BufferedReader bufRead = new BufferedReader(new FileReader("stdinfo.txt"));

        BufferedWriter bufWrite = new BufferedWriter(new FileWriter("newstdinfo.txt"));

        int i;

        // manipulate the student information from files

        do {

            i = bufRead.read();

            if (i != -1) {

                if (Character.isUpperCase((char) i)) {

                    bufWrite.write(Character.toLowerCase((char) i));

                   

                } else {

                    bufWrite.write((char) i);

                }

            }

        } while (i != -1);

         System.out.println("All the character of stdinfo change to Upaer case: ");

        bufRead.close();

        bufWrite.close();

}

}

Output :