When to use interfaces compared to Abstract classes?
50570
When to use an interface instead of an abstract class and vice versa?
100925
Does an interface by default extend Object?
29840
Why can't I seem to grasp interfaces?
35653
Should methods in a Java interface be declared with or without a public access modifier?
33115
Interface naming in Java
81041
Why an abstract class implementing an interface can miss the declaration/implementation of one of the interface's methods?
129614
Can we instantiate an abstract class directly?
131176
Collection versus List what should you use on your interfaces?
90035
Creating the instance of abstract class or anonymous class
32263
C# Interfaces. Implicit implementation versus Explicit implementation
41552
Do interfaces inherit from Object class in java
69594
What is the difference between an interface and abstract class?
69939
Implement an interface and override methods in Java?
112492
Why is there no multiple inheritance in Java, but implementing multiple interfaces is allowed?
154776
When should we implement Serializable interface?
132306
Java - Interface, instantiating an interface?
102832
Difference between generic argument constrained to an interface and just using the interface