Computer scienceProgramming languagesJavaCode organizationObject-oriented programmingClass hierarchiesInterfaces and abstract classes

Abstract class vs interface

The differences and similarities between abstract classes and interfaces

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What are the differences and similarities between abstract classes and interfaces?

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An abstract class implements an interface while an interface extends another interface.

An abstract class can have multiple constructors when an interface can have only a single constructor.

An abstract class and an interface can extend each other.

An abstract class and an interface cannot be instantiated directly.

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