Learn when and how to use default methods in interfaces. Discover when to declare a static method in an interface. We have seen interfaces so far use abstract methods. Like the Swimmable interface ...

You’ll also learn how the interface has evolved in Java 8, with the addition of default and static methods, and in Java 9 with the new private methods. These additions make interfaces more ...

We all understand that we should code to interfaces. Interfaces give the client a contract which they should use without relying on implementation details (i.e. classes). Hence, promoting loose ...

We know that interface provide methods without body or functionality but in abstract class we can provide default functionality of methods. so in interface we can't give method body and can't ...

Interfaces always contained only method declaration and there was no way of defining method definition in the interfaces because java did not allow multiple inheritance of classes. java only allowed ...

Can have default and static methods (introduced in Java 8). Can have private methods with the implementation (introduced in Java 9). Can have any kind of methods.