Slip 21 - A) Write a java program to display each word from a file in reverse order.

Solution :

import java.io.*;

import java.util.Scanner;

class Slip21A{

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

        FileReader fr = new FileReader("a.txt");

        FileWriter fw = new FileWriter("b.txt");

        try (Scanner dr = new Scanner(fr)) {

            while(dr.hasNextLine()){

                String s=dr.nextLine();

                StringBuffer buffer = new StringBuffer(s);

                buffer=buffer.reverse();

                String ans = buffer.toString();

                fw.write(ans);

            }

        }catch(Exception e){

            System.out.print("Error...!");

        }

        fr.close();

        fw.close();

    }

}

Output:

a.txt

b.txt