Covariance in Java
- by Bobby
Why does the following not work in Java? It would work in C#:
public static final List<String> Split(String str, char delimiter)
{
if ((str == null) || "".equals(str))
{
return new CopyOnWriteArrayList<String>();
}
}
I get an error saying this method has to return List. CopyOnWriteArrayList implements the List interface. Why does covariance not apply on return values in Java?
