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 that way ". An …

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 Classes How do …

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 interfaces) …

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 …

Nov 29, 2009 · The technical differences between an abstract class and an interface are already listed in the other answers precisely. I want to add an explanation to choose between a class and an …

Apr 6, 2012 · I know the basic difference between abstract class and interface. use abstract class when the requirement is such that we need to implement the same functionality in every subclass for a …

Jun 28, 2021 · This picture table helps me for concise difference between Interface and Abstract class after java 8. Based on these differences we can choose one which suits our use case.

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 an interface …

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 …

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 to use an interface …