Program for Question-Answer

/* Program for Question-Answer */

import java.io.DataInputStream;     // to load DataInputStream class        

class P26
{
    public static void main(String args[ ])
    {
        String ans = new String();
        boolean flag=false;
        DataInputStream in = new DataInputStream(System.in);

        System.out.println("You have only three attempts to give answer of following Question");
        for(int i=0;i<3;i++)
        {
            try
            {
                 System.out.print(" Who is the inventor of C++ ? : ");
                 ans = in.readLine();
            }
            catch(Exception e) {  System.out.println("I/O Error");   }

            if(ans.equals("Bjarne Stroustrup")||ans.equals("bjarne stroustrup"))
            {
                System.out.println(" Good ");
                flag = true;
                break;
            }
            else if(i<=1)
                    System.out.println(" Try again..... ");
        }

        if(flag==false)
        {
            System.out.println("\n Your three attempts are over..... ");
            System.out.println("\n C++ was invented by Bjarne Stroustrup in 1979");
        }
    }
}