[sukatoa]

Same rule,

If this is not a compilable code, why?
If this is, what's the output?

Code:

public class test extends B{

	public test(){
		this.printA();
		this.printB();
	}

	public static void main(String args[]){
		new test().printA();
	}
}

abstract class B extends A{
	public void printA(){
		System.out.println("class B");
	}		
}

abstract class A{
	public void printB(){
		System.out.println("class A");
	}
}