public class A
{
    public A()
    {
        printA();
    }
    public static void printA()
    {
        System.out.println("Klasse A");
    }
    public A(boolean print)
    {
        if(print)
            printA();
    }
}
public class B extends A
{
    public B()
    {
        super(false);
        System.out.println("Klasse B");
        A.printA();
    }
}