Difference between Enumeration<? extends ZipEntry> and Enumeration?

Question

Is there a difference between Enumeration and Enumeration? If so, what is the difference?

Answer 1

Now you've just gone and reminded me of something I wish we had over in the C# world.

Other than the links provided, there's some good links about C# and Java in relation to this topic in the answers to this question: Logic and its application to Collections.Generic and inheritance

A selection of which are:

• Contravariance and Covariance in C# (code is C# specific, and theoretical since the syntax doesn't exist [yet], but covers the topics in general very well.)
• Java generics and the covariance and contravariance of arguments
• Java generics tutorial from Sun.