Difference between Abstract clase and the Interface in Java

Abstract Class	Interface
An abstract class is a class that cannot be instantiated, but can be subclassed.	An interface is a collection of abstract methods that can be implemented by a class.
An abstract class can have both abstract and non-abstract methods.	An interface can only have abstract methods.
An abstract class can have instance variables.	An interface cannot have instance variables.
A subclass can only extend one abstract class.	A class can implement multiple interfaces.
An abstract class can provide default implementation for some of its methods.	An interface cannot provide default implementation for its methods until Java 8.
Abstract classes are generally used for defining base classes in a class hierarchy.	Interfaces are generally used for defining contracts that classes can implement.