java - What is an anonymous inner class?

Question

When I tried to do some sample on an abstract class in Java I accidentally got some thing like anonymous inner class in Eclipse.

I have pasted the piece of code below. I don't understand how the abstract class is related to anonymous class.

package com.Demo;

abstract class OuterClass {
    abstract void OuterClassMethod();
}

public abstract class InnerClass extends OuterClass {
    public static void main(String[] args) {
        InnerClass myInnerClass = new InnerClass() {
            @Override
            void OuterClassMethod() {
                int OuterClassVariable = 10;
                System.out.println("OuterClassVariable" + " " + OuterClassVariable);
            }
        };
    }
}

Answer 1

A anonymous class is an "in-line" concrete implementation of a class, typically (but not necessarily) of an abstract class or an interface. It is technically a subclass of the extended/implemented super class.

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