Abstract Class vs Interface in Java

Difference between Abstract class and Interface#

Points	Abstract Class	Interface
Type of Methods	Can have both abstract and concrete methods	Can have only abstract methods (until Java 7), from Java 8 can have default and static methods, and from Java 9 can have private methods
Variables	Can have final, non-final, static, and non-static variables	Only static and final variables
Inheritance	Can extend only one class (abstract or not)	A class can implement multiple interfaces
Constructors	Can have constructors	Cannot have constructors
Implementation	Can provide the implementation of interface methods	Cannot provide the implementation of abstract class methods