Why use an interface in Apex?
39482
Abstract, Interface, Classes OH MY - Question on Approach
23198
Why explicit interface implementation?
65730
implicit super-interface in Java?
29840
Why can't I seem to grasp interfaces?
34847
Counterpart to anonymous interface implementations in C#
33679
Why should the interface for a Java class be preferred?
146553
Why an interface can not implement another interface?
27078
When do Java generics require  instead of  and is there any downside of switching?
116081
How can I refer to the class type a interface is implementing in Java?
88182
Traits vs. interfaces
90903
Hibernate HQL with interfaces
848
Why can't I define a static method in a Java interface?
132306
Java - Interface, instantiating an interface?
80633
Java - declaring from Interface type instead of Class
91796
How do I implement interfaces in python?
45379
Why are interface variables static and final by default?
69594
What is the difference between an interface and abstract class?