Freaky ClassCastException

[cristina1234]

I have a constructor that takes a java.awt.Component as an argument:
public DesignContainer(Component comp,...){...}
If I pass it a javax.media.opengl.GLCanvas object,it takes it,but the lines :
comp instanceof GLCanvas -returns false
GLCanvas canv=(GLCanvas)comp -gives ClassCastException
(-->I cannot downcast)
AND
comp.getClass().toString().equals("class javax.media.opengl,GLCanvas") - returns true
I am puzzled:
is the object I am passing a GLCanvas or what?!! how can I verify what it is because I need to downcast...
The interesting thing is that the program DOES draw a GLCanvas,so it should be right...(but I can't continue my work if I can't test for GLCanvas,i use it a lot in my project)

[r035198x]

I have a constructor that takes a java.awt.Component as an argument:
public DesignContainer(Component comp,...){...}
If I pass it a javax.media.opengl.GLCanvas object,it takes it,but the lines :
comp instanceof GLCanvas -returns false
GLCanvas canv=(GLCanvas)comp -gives ClassCastException
(-->I cannot downcast)
AND
comp.getClass().toString().equals("class javax.media.opengl,GLCanvas") - returns true
I am puzzled:
is the object I am passing a GLCanvas or what?!! how can I verify what it is because I need to downcast...
The interesting thing is that the program DOES draw a GLCanvas,so it should be right...(but I can't continue my work if I can't test for GLCanvas,i use it a lot in my project)

Have a look at this