Hi All,

I have an abstract class,called Mybase.java, for example. I have a derived class called MyDerived.java that extends Mybase.java.

From the window command line, I compile the Mybase.java successfully, as it should be. When I compile Myderived.java I got the error:

C:\test\Myderiv ed.java:3: cannot fsymbol: class Mybase
public class Myderived extends Mybase

Please give me some...