Abstract classes and interfaces in Java serve fundamentally different purposes. Learn the differences between these Java language elements and how to use them in your programs. Abstract classes and ...
Design patterns have evolved to solve problems often encountered in software applications. The factory method design pattern and the abstract factory design pattern are both creational patterns.
1.if we don't know anything about implementation just we have requirement specification then we should go for interface. 2.inside interface every method is always public and abstract whether we are ...