Question

I am getting some “Stack Over Flow” Exception while I am executing below code.
I am making an “Anonymous Inner class”.

public class Prac_RegularInnerClass {
    public static void main(String args[])
    {
        Child1 c1=new Child1();
        c1.method4();
    }
}

class Parent1{
    public int z=10;
    public void method1()
    {
        System.out.println("We are in Method 1!!!!!!!!!\n\n");
    }

    public void method2()
    {
        System.out.println("We are in Method 2!!!!!!!!!\n\n\n");
    }
}

class Child1 extends Parent1{
    //Anonymous Inner class.
    Parent1 p1=new Child1(){
        public void method1()
        {

        }
    };

    public void method4()
    {
        p1.method1();
        p1.method2();

    }
}

I have made parent class Parent1. I have made a chile class Child1.
Can anyone explain?

Answer 1

That may be because within Child1 in construction phase you are setting the p1 property as an anonymous subclass of Child1 itself, which makes a new Child1 object instantiate, which makes a new Child1 object instantiate, which makes a new Child1 object instantiate, which makes a new Child1 object instantiate, and so on.

Instead that, either assign new objects after constructing them or assign an object of a different type which doesn’t end in recursion.