Tuesday, June 17, 2014

abstract class in java

declared abstract - mixture of implemented and abstract methods


abstract void dddd(a a,s s,s s,a s);


abstract method means class must be declared abstract

abstact keyword not needed in an interface

abstract is for code sharing

interface is for behaviour describibing to unrelated classes

an example is abstractMap - Collections framework

note abstract calls can implement an interface but you dont have to do the implementation - just the subclass

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