What is the difference between an interface and abstract class?
Dec 16, 2009 · An interface is a contract: The person writing the interface says, " hey, I accept things looking that way ", and the person using the interface says " OK, the class I write looks …
oop - When to use an interface instead of an abstract class and …
Jan 26, 2009 · This may be a generic OOP question. I wanted to do a generic comparison between an interface and an abstract class on the basis of their usage. When would one want …
oop - Interface vs Abstract Class (general OO) - Stack Overflow
Apr 17, 2009 · I didn't know what he wanted to hear but he wasn't satisfied either. See Also: When to use an interface instead of an abstract class and vice versa Interfaces vs. Abstract …
c# - Interfaces vs. abstract classes - Stack Overflow
It seems to show the answerer's bias ("advantages of abstract class" followed by four bullets of advantages followed by "interfaces are merely" followed by a single "however" in favor of …
Interface or an Abstract Class: which one to use? - Stack Overflow
May 24, 2018 · The main difference is an abstract class can contain default implementation whereas an interface cannot. An interface is a contract of behaviour without any implementation.
How should I have explained the difference between an Interface …
Sep 13, 2013 · In one of my interviews, I have been asked to explain the difference between an Interface and an Abstract class. Here's my response: Methods of a Java interface are implicitly …
oop - What is the difference between interface and abstract class …
May 1, 2018 · A bigger difference in TypeScript is that (abstract) classes are available at runtime, while interfaces are compile time only. This means that you cannot, for example, use …
Abstract Class vs Interface in C++ - Stack Overflow
Aug 26, 2014 · An "interface" embodies the concept of a contract between clients and an implementation. An "abstract class" contains code that you want to share between multiple …
What are the differences between abstract classes and interfaces …
Mar 23, 2014 · Abstract classes could have them, interfaces could not. Java 8 though introduces default implementations for interfaces, meaning this is no longer the critical difference between …
When to use: Java 8+ interface default method, vs. abstract method
Java 8 allows for default implementation of methods in interfaces called Default Methods. I am confused between when would I use that sort of interface default method, instead of an …