What to use here, abstract class or Interface?
50570
When to use an interface instead of an abstract class and vice versa?
69315
Should you always Code To Interfaces In Java
129614
Can we instantiate an abstract class directly?
9307
Abstract class in Java
1099
Prefer composition over inheritance?
533
Encapsulation vs Abstraction?
7323
What is the point of interfaces in PHP?
38390
Is there more to an interface than having the correct methods
112804
Java Interface Usage Guidelines -- Are getters and setters in an interface bad?
4342
What is the use of creating a class inside interface and interface inside class
39482
Abstract, Interface, Classes OH MY - Question on Approach
126102
Declare IDisposable for the class or interface?
85201
"Cannot create an instance of the abstract class or interface" C# error message
66575
Why use an interface in Apex?
121498
Using HTML for interface?
91796
How do I implement interfaces in python?
110878
What is the main advantage of making a class abstract