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I have a problem with comparing generic types. In C# I've always done something like: class Element<T, V> where T : IComparable<T>.
My question is how can it be written in java?
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Comparability expresses the innate ability to be sorted in a list, and so many Java types are comparable, like Integer, String, etc. The way a class implements this interface is that T must be the class itself, for example, if you look at the String class: public class String implements Comparable<String> ...
Whenever you want to restrict the type parameter to subtypes of a particular class you can use the bounded type parameter. If you just specify a type (class) as bounded parameter, only sub types of that particular class are accepted by the current generic class. These are known as bounded-types in generics in Java.
You cannot inherit a generic type. // class Derived20 : T {}// NO!
I suspect you want something like:
class Element<T extends Comparable<T>>
... using the Comparable interface and a bounded type parameter.
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