How does inheritance of instance fields work in this particular code?

Question

class A
{
    int a = 2, b = 3;
    public void display()
    {
        int c = a + b;
        System.out.println(c);
    }
}
class B extends A
{
    int a = 5, b =          


        

Answer 1

When you compile your code it pretty much becomes like:

class A extends java.lang.Object
{
    int a=2,b=3;
    public void display()
    {
        int c=a+b;
        System.out.println(c);
    }
}
class B extends A
{
    int a = 5, b = 6;
    public void display()
    {
      super(); //When you call y.display() then this statement executes.
    }
}
class Tester
{
    public static void main(String arr[])
    {
        A x = new A();
        B y = new B();
        x.display();
        y.display();
    }
}

And hence, when super calls, the method of class A is being called.

Now go to method of class A. Here int c = a + b; means c = this.a + this.b; which is 2 + 3.

And the result is 5.