what is the advantage of interface over abstract classes?

Question

In Java, abstract classes give the ability to define both concrete and abstract methods whereas interfaces only give the ability to implement abstract methods. I believe overrid

Answer 1

-Method without any implementation is abstract method,whenever a class contains one or more abstract method,then it must be declared as a abstract class

-Interface is fully abstract which cannot have constructor,instance and static blocks,and it contains only two types of members 1.public abstract method 2.public-static-final variable

*Both cannot be instantiated but reference can be created.

*Which one suits better depends on the application -Interfaces are useful because Java classes will not support multiple inheritance but interfaces do.

-Abstract classes are useful when you need concrete behavior from the base class.