java vs c#

[mich]

Hello,
I've heard that in Java even the methods (of a class) can be generics? Are this correct? Could you give me a simple examples ? ( I come from c++ and this for me sounds strange)...
Furthermore: Does C# permit the same thing? (generic methods) ?

thanks in advance...

[David Anton]

Sure, and the syntax is nearly identical between Java and C# for this:

Java:
public static <T> short Compare(T Arg1, T Arg2)

C#:
public static short Compare<T>(T Arg1, T Arg2)


You can call it either by explicitly specifying the type or not:
Java:
o.Compare(1, 2);
o.<int>Compare(1, 2);

C#:
o.Compare(1, 2);
o.Compare<int>(1, 2);

[mich]

thanks for reply...and Can these method be virtual too? (I suppose of course for java, being in Java all methods virtual by default)...

[David Anton]

Yes:

C#:
public virtual short Compare<T>(T Arg1, T Arg2)

And as you said, all methods in Java are virtual without the need for a keyword.

[mich]

furthermore: does C# (and java) permit overloading of methods?

[David Anton]

Yes. Overloading requires no special syntax in either language - just create a new method with the same name but different signature.

If what you meant was overriding base class methods, then you can use:

C#:
protected override void TestMethod()
{
}

Java:
@Override
protected void TestMethod()
{
}

C# additionally allows shadowing base class methods:
protected new void TestMethod()
{
}

[partyk1d24]

ONE BID DIFFERANCE WITH OVERLOADING IN JAVA VS C#.........

You cannot I repeat CANNOT overload operators (this got me in a bind in my first java project). However, is some frameworks and DSLs, like groovy, this functionality is added.

[mich]

could anyone explain me the sense of the
"Comparing C# and Java Generics", Anders Hejlsberg reply at paragraph 3 ("Issue number two, and.......) ?
http://www.artima.com/intv/generics2.html
I don't understand the sense of what he says about reflection in java (is it possibile or not?)

thanks,