y superclass constructor is called automatically

[_ShivamKapoOr_]

class A {

    A() {
        System.out.println("Class : A");
    }
}

class B extends A{

    B() {
        System.out.println("Class : B");
    }
}

public class Myclass {

    public static void main(String[] args) {
        [COLOR="Red"]new B();[/COLOR]
    }
}

In this program when the red line is executed the constructor of class B is supposed to be called Only as far as I know........ but the constructor of super class is also called. y??????????????

[_ShivamKapoOr_]

Guys I got the answer. Thnx n e ways :)
If a constructor does not explicitly invoke a superclass constructor, the Java compiler automatically inserts a call to the no-arguement constructor of the superclass. If the super class doesnot have a no-arguement constructor, you will get a compile-time error.