Interface

Interface:
1)It is a keyword,we use it when an method is incomplete in a class
2)It can be achieve by implements keyword
3)Instantly,it allows to access multiple parent class in a child class
4)It allows to create a abstract method and method with defaut keyword
5)After the 8th version of java,main method is allowed in interface concept
6)We no need to specify keyword for abstract
7)It won't allows to create object,instance variable,constructor,non abstract class