Explain Difference Between Interface and abstract class
Explain Difference Between Interface and abstract class
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Basically interface is much more abstract thing - it just specifies certain number of brehaviours
taht the object should demonstrate, otherwise it does not specify much about the actual
"meat" of the object
Abstract class on the contrary will often specify almost everything about the object, but say one or two
behaviors leaves open, so that some subclasses of this abstract class implement these behaviors in one way and other
suvbclasses - in another way
taht the object should demonstrate, otherwise it does not specify much about the actual
"meat" of the object
Abstract class on the contrary will often specify almost everything about the object, but say one or two
behaviors leaves open, so that some subclasses of this abstract class implement these behaviors in one way and other
suvbclasses - in another way
interface is a collection of methods which need to be implemented by any class which cliams to implement the interface
abstract class is a class which has one or more methods which were not implemented and should be implemenetd in the
non-abstract sub-class of this class
so those are in fact very different entities.
interface does not include any iomplementation of any methods - only signatures
which need to be followed by implmeneting classes
abstract class can have implementation of all methods with the exception of one
and abstrcat class can have instance variable and everything
interfcae can have only method signtures and constants and nothing else