Which scenario use Abstract Class and Interface

Question

Hai All In which scenario I use Abstract Classes and Interfaces and one more thing i can use both.

Jignesh Trivedi · Answer

hi An Abstract class without any implementation just looks like an Interface; however there are lot of differences than similarities between an Abstract class and an Interface. Interfaces are useful when you do not want classes to inherit from unrelated classes just to get the required functionality.It is used where there of chances adding new method in future. Interfaces are more used to set standards. interface gave merely a specificationnothing implemented for any standalone project which can be changed at will its more design flexible and it can be utilized to model multiple inheritance. please refer www.codeproject.com/Articles/11155/Abstract-Class-versus-Interface hope this help.

venkata saibabu · Answer

one key differnce between abstract classes and interfaces is that a class may implement an unlimited number of interfaces but may inherit from only one abstract class. for example: Interface Ivechicle { void start(); void stop(); void faster(); void slower(); } Abstract class Vechicle:Ivechicle { int Currentspeed; void start(){ Currentspeed =1}; void stop(){ Currentspeed=0}; void faster(){Currentspeed =+1}; void slower(){Currentspeed=-1); }