class A{
A(){
System.out.println("A: super constructor");
}
}
class B extends A{
B(){
super();
System.out.println("B: constructor\n");
}
B(int i){
System.out.println("B: constructor " + i );
}
B(int i, int j){
this(i);
System.out.println("B: constructor " + j);
}
public static void main(String[] args){
B b1 = new B();
B b2 = new B(2, 3);
}
}