//return true if testObj implements interfaceObj

    return (testObje instanceof interfaceObj);

Is it a requirement that testObj has to implement ALL the interfaces
interfaceObj implements?

Su Dang

Coincidently I just bumped into what might be the solution:

========================

return interfaceObj.getClass().isAssignableFrom(testObj.getClass());

========================

This tests whether interfaceObj is the same or a superclass/interface
of testObj. Quoting the API doc:

"Determines if the class or interface represented by this Class object
is either the same as, or is a superclass or superinterface of, the
class or interface represented by the specified Class parameter. It
returns true if so; otherwise it returns false. If this Class object
represents a primitive type, this method returns true if the specified
Class parameter is exactly this Class object; otherwise it returns
false."

I guess I learned something new today :)

Thanks,
cyberco

It would be easier if you could guarantee that the first test argument
is a Class:

boolean test(Class interfaceClass, Object testObj) {
     return interfaceClass.isInstance(testObj);
}

In what cases will you need to call it with the interface NOT
represented by its Class?

Patricia