Java instantiates a class from a string

I have the following,

public interface SuperbInterface
public class A implements SuperbInterface
public class B extends A
public class C extends B

I want to instantiate C, but I seem to get B. what did I do wrong?

Class classz = Class.forName("C");
SuperbInterface superb = (SuperbInterface)classz.newInstance();

//Here when I debug it seems to be going to B.doWork() methods instead of C.doWork().
superb.doWork();

Solution

The only thing I can think of is that you didn't override dowork () in C

Maybe you've tried to override, but there are some spelling mistakes in the method name or wrong parameters?