What’s the Output?What is the output of the following code? Give an explanation.   public...

What’s the Output?

What is the output of the following code? Give an explanation.

   public class Papa   {     protected int x;

     public Papa()     {       x = 0;     }

     public Papa(int y)     {       x = y;     }   }

   public class Son extends Papa   {     public Son()     {}     public Son(int x)     {}     public static void main(String[] args)     {       Son s = new Son();       System.out.println(s.x);       Papa t = new Son(2);       System.out.println(t.x);     }   }