Overriding and Polymorphism Question, Whizzlabs 11 of 15 on sample test

[Robert Elbourn]

class SuperBase { void print(SuperBase a){System.out.println("SuperBase");}}
class Based extends SuperBase { void print(Based a){System.out.println("Based");}}
class Derived extends Based {static void print(Derived a){System.out.println("Derived");}}

public class SuperBaseTest {

public static void main(String[] args) {


SuperBase a1= new SuperBase();
SuperBase a2 = new Based();
SuperBase a3 = new Derived();

Based b2 = new Based();
Based b3 = new Derived();

Derived d3 = new Derived();

a1.print(new SuperBase());//SuperBase
a1.print(new Based());//SuperBase
a1.print(new Derived());//SuperBase

a2.print(new SuperBase());//SuperBase
a2.print(new Based()); //SuperBase
a2.print(new Derived()); //SuperBase

a3.print(new SuperBase()); //SuperBase
a3.print(new Based());//SuperBase
a3.print(new Derived());//SuperBase

b2.print(new SuperBase()); //SuperBase
b2.print(new Based()); //Based
b2.print(new Derived()); //Based

b3.print(new SuperBase());//SuperBase
b3.print(new Based()); //Based
b3.print(new Derived()); //Based

d3.print(new SuperBase()); //SuperBase
d3.print(new Based()); //Based
d3.print(new Derived()); //Derived
}

}


I have created this compilable class( Base is now Based as I had a class already defined that I couldn't be bothered to package differently)
this prints out all the valid permutations and combinations that the question could have to offer (I think)