Java Interface Vs Abstract Class
Abstract class can have abstract and non abstract methods. Difference between abstract class and interface in java multiple inheritance of abstract class and interface in java despite the fact that both abstract class and interface are primarily used for abstraction they are quite different from each other.
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A class can extend only one abstract class while a class can implement multiple interfaces.
Java interface vs abstract class. 7 an abstract class can be extended using keyword extends. An interface can be implemented using keyword implements. 8 a java abstract class can.
Abstract class vs interface. An abstract class permits you to make functionality that subclasses can implement or override whereas an interface only permits you to state functionality but not to implement it. The interface keyword is used to declare interface.
Interface can have only abstract methods. Abstract class in java 2. An abstract class may contain non final variables.
6 an abstract class can extend another java class and implement multiple java interfaces. Members of a java interface are public by default. A java abstract class can have the usual flavors of class members like private protected etc.
Variables declared in a java interface are by default final. From java 8 it can have default and static methods also. Variables declared in a java interface is by default final.
An interface can extend another java interface only. While an abstract class is a class an interface is an interface. An abstract class may contain non final variables.
A java abstract class can have instance methods that implements a default behavior. In this article we will discuss the difference between abstract class and interface in java with examples i have covered the abstract class and interface in separate tutorials of oops concepts so i would recommend you to read them first before going though the differences.
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