#67 More on Interfaces in Java
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In this lecture we will learn:
- Implementation of multiple interfaces
- Inheritance in between interfaces
- Method calling of an interface
#1
- We can have a class implementing multiple interfaces.
class B implemets A,X
{
}
(here, A and X are two different interfaces)
- Implementation of all the methods that are present in those interfaces should be given in a class.
- Inheritance is also valid in between interfaces.
- Inheritance can be achieved in between interfaces by using the extend keyword.
- Whenever you create a reference of an interface and create an object of a class, then you can only call those methods by that reference that are present in that interface of which the refernce is created.
- Methods of another interface can be called by using another reference variable for that interface with the object of a class.
#2
*
class - class - extends
class - interface - implements
interface - interface - extends
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