[ayende]

From OO perspective, there really isn't any difference between Java and C#

There are certain features (such as linq, genetics,etc) that I consider C# superior, but OOPness isn't one of them.

That said, for historical reasons, Java has a lot more emphasis on class hierarchies, etc

[dragonwriter]

> From OO perspective, there really isn't any difference between Java and C#

I'd say that properties, reified generics, and extension methods are all highly relevant to statically-typed, class-based OOP, and significant C# vs Java differences.

[Danao]

Are these features (properties, reified generics, extension methods etc.) implemented in C# or in Java?

[dragonwriter]

All three in C#, not Java (Java has properties, but they aren't the same kind of thing as C# properties.)