JennyQuestion

class A
{
    public A()
    {
        System.out.println("a");
    }
}

class X
{
    public X()
    {
        System.out.println("x");
    }
}

class B extends A
{
    public B()
    {
        System.out.println("b");
    }

    private X data_x = new X();
}

class App {
    public static void main(String[] args) {
        myB = new B();
    }
}