تفاوت بین Abstract class و اینترفیس در جاوا

تفاوت interface و Abstract class در جاوا به شرح زیر می باشد:

Abstract Class	Interface
contains zero or more abstract methods	interface contains all abstract methods
Abstract class can contain variable	interface contains only constant
Abstract class contains constructor	interface does not have any constructor
extend keyword is used for abstract class for provide body of abstract methods	Implement keyword is used to provide methods of interface