Write a java program to illustrate inner class accessing inner class properties

Write a java program to illustrate inner class accessing inner class properties

Program

class A
{
    int x=10;
    void f1()
    {
        System.out.println("this if f1 method");
    }  
    void f2()
    {
        B ob=new B();
        ob.f4();
    }
    class B
    {
        int y=30;
        void f3()
        {
            System.out.println("x="+x);
            f1();
        }
        void f4()
        {
            System.out.println("this is  f4 method");
        }
    };
    
    static class C
    {
        void f5()
        {
            System.out.println("this is f5 method");
        }
    }
};

public class Main 
{
    public static void main(String[] args)  
    {
        A oa=new A();
        oa.f2();
        A.B ob=new A().new B();// non static inner class object
        ob.f3();
        A.C oc=new A.C(); // static inner class object
        oc.f5();
            
    }
}

this is f4 method
x=10
this if f1 method
this is f5 method

Note: Outer class or external class cont be declare either static or final class.

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