How to access anonymous inner class in main method?

Question

How to access the anonymous inner class object in main method. It is giving compile time error saying that "cannot make static reference to non static method". If I am making anonymous inner class as static then I can access ut I want to access without making it static.

How to do that. Please help.

AnonymousInnerClass2.java

abstract class AnonymousInnerClass21
{
    abstract void m();  
}

public class AnonymousInnerClass2
{
    AnonymousInnerClass21 a=new AnonymousInnerClass21()
    {
        @Override
        void m() {
            System.out.println("Hello");
        }
    };

    public static void main(String[] args)
    {
        a.m();
    }
}

Either declare `a` to be `static`, or create an instance of `AnonymousInnerClass2` in `main`. — k_ssb, May 20 '18 at 04:32
`new AnonymousInnerClass2().a.m();` or better use a getter `new AnonymousInnerClass2().getA().m();` — c0der, May 20 '18 at 04:52
THere is no class named AnonymousInnerClass2 in your code, only AnonymousInnerClass2**1*. And then, the question boils down to how to access a non static field from within a static method. Or the other way round: an anonymous class can't be accessed. You created an **instance** of that class, and that is about it. — GhostCat, May 20 '18 at 05:08

score 0 · Answer 1 · answered Jul 18 '18 at 07:29

this is because for accessing inner class (whether its is normal/named class or Anonymous class), you must create object of class in which inner class is defined, you can try below

abstract class AnonymousInnerClass21
{
    abstract void m();  
}

public class AnonymousInnerClass2
{
    AnonymousInnerClass21 a=new AnonymousInnerClass21()
    {
        @Override
        void m() {
            System.out.println("Hello");
        }
    };

    public static void main(String[] args)
    {
        AnonymousInnerClass2 anonymousInnerClass2=  new AnonymousInnerClass2 ();//create outer class object
        anonymousInnerClass2.a.m(); // access inner class object through outer class object

    }
}

How to access anonymous inner class in main method?

AnonymousInnerClass2.java

1 Answers1