purpose of interface in classes
7323
What is the point of interfaces in PHP?
45379
Why are interface variables static and final by default?
89994
Why do we need immutable class?
152816
Abstract base classes that implement an interface
112492
Why is there no multiple inheritance in Java, but implementing multiple interfaces is allowed?
88182
Traits vs. interfaces
27022
The difference between Classes, Objects, and Instances
137841
Private Interfaces
85865
Optional Methods in Java Interface
141587
Is there any reason to declare optional parameters in an interface?
150146
Final arguments in interface methods - what's the point?
15691
Interface vs Base class
134042
Why do many Collection classes in Java extend the abstract class and implement the interface as well?
8789
Can anonymous class implement interface?
126102
Declare IDisposable for the class or interface?
153259
What is the use of creating a constructor for an abstract class in Java?
151319
What is Interface method in salesforce