public class InnerClassExample{
    class InnerClass{
        String name = "Naulej";     
        @Override
        public String toString() {
            System.out.println(name);
            return super.toString();
        }
    }

    public InnerClassExample(){
        InnerClass innerClass = new InnerClass();
        System.out.println(innerClass.toString());
    }
    public static void main(String[] args){     
        new InnerClassExample();        
    }
}

Output

Naulej
InnerClassExample$InnerClass@19821f

Description:- The above code demonstrates you an Inner Class. An inner class is a class defined inside another class. Here, we have created a class named InnerClassExample and inside it, we have defined another class named InnerClass. Inside this class, we have created a toString method which return the string to its object.