How come generic type parameter says "extends" Comparable not "implements"?
63820
Java generics - why is "extends T" allowed but not "implements T"?
1820
What does Java's type parameter wildcard really mean? What's the real difference between Foo and Foo?
124087
Why can't add element in a upper bound generics List?
12573
Why can't a Generic Type Parameter have a lower bound in Java?
80510
Implements vs extends: When to use? What's the difference?
20655
How do I make the method return type generic?
22843
Why can't I use a type argument in a type parameter with multiple bounds?
115894
Extend a generic type in Java
157124
How are C# Generics implemented?
31009
How can I require a generic parameter to be an enum that implements an interface?
126935
Getting error for generic interface: The interface Observer cannot be implemented more than once with different arguments:
131969
How to get the type of T from a member of a generic class or method?
4255
"implements Runnable" vs "extends Thread" in Java
106745
Generics: casting and value types, why is this illegal?
61861
Extension methods must be defined in a non-generic static class
22021
How to check if a generic type implements a specific type of generic interface in java?
122797
Why are C# 4 optional parameters defined on interface not enforced on implementing class?