Inner Class Demo

public class A {
	
	void f(){
		System.out.println("AAA");
	}
	class B{
		void f(){
			System.out.println("BBB");
		}
		void bf(){
			A.this.f();
			this.f();//a plain "this" would be Inner's this
		}
	}
	
	
	public static void main(String[] args) {
		A a = new A();
		B b = a.new B();
		b.bf();
	}
}

// output: AAA
//         BBB