What output is produced by the following code?  Explain how it works.
public class A {
int a = 1;
int b = 2;
public int getSum(int a, int b) {
   this.a+=a;
   this.b+=b;
   return this.a + this.b;
}
}
public class B extends A {
int a = 3;
int b = 4;
public int getSum(int a, int b) {
   this.b=a;
   super.b=b+b;
   return super.a+this.b;
}
}
public class q2 {
public static void main(String[] args){
A a = new A();
B b = new B();
System.out.println(a.a + \" \"+ b.b);
System.out.println(a.getSum(a.a,b.b));Â Â
System.out.println(a.b + \" \"+ b.b);
System.out.println(b.getSum(a.b,b.b));
System.out.println(a.a+\"\"+a.b + \" \" +b.a+\"\"+b.b);
}
}
