Why do some methods in Java have a return type of an Abstract Class/Interface?
855
What does it mean to "program to an interface"?
35116
Function overloading by return type?
6853
Interface vs Abstract Class (general OO)
69594
What is the difference between an interface and abstract class?
116081
How can I refer to the class type a interface is implementing in Java?
39482
Abstract, Interface, Classes OH MY - Question on Approach
139818
Why implement interface explicitly?
144718
Methods With Same Name as Constructor - Why?
117030
Are static methods inherited in Java?
97149
Why should I use the keyword "final" on a method parameter in Java?
5495
Is List a subclass of List? Why are Java generics not implicitly polymorphic?
151760
Java - why no return type based method overloading?
133457
Two interfaces with same method signature implemented in Java class
19118
Overloading by return type
9307
Abstract class in Java
86689
How can I return an anonymous type from a method?
33679
Why should the interface for a Java class be preferred?