Now, I'm using some methods by using a jar. But these classes I use have no package names.
I can use reflection to solve the problem of using these methods.But now I want to override some of the interface and classes.
However,others can extends these classes directly without any compilation error on their computers using Elcipse, while I extends directly, I have this compilation error:
(classname) cannot be resolved to a type.
Is there any chance configuration on my Elcipse is different from others?
I'm so confused now...