What if class implements two interfaces having same method?

What if class implements two interfaces having same method?

A class implementation of a method takes precedence over a default method. So, if the class already has the same method as an Interface, then the default method from the implemented Interface does not take effect. However, if two interfaces implement the same default method, then there is a conflict.

How can we implement the same method of two interfaces in Java?

If a type implements two interfaces, and each interface define a method that has identical signature, then in effect there is only one method, and they are not distinguishable. If, say, the two methods have conflicting return types, then it will be a compilation error.

How can we implement the two interfaces having same method names?

Answer: If we have two interface with same method name then a class need to implement interface explicitly in a program. [Note: For this interview question, an interviewer expects explanation of explicit interface implementation with a complete program example.

Can a class implement two interfaces that each contain the same method signature?

Yes, a class can implement two two interfaces with the same method signature but that method should be implemented only once in the class.

Can we implement two interfaces?

Yes, a class can implement multiple interfaces. Each interface provides contract for some sort of behavior.

Why you can implement multiple interfaces but can extend only one class?

Since interfaces cannot have implementations, this same problem does not arise. If two interfaces contain methods that have identical signatures, then there is effectively only one method and there still is no conflict.

Can an interface implement another interface?

An interface can extend any number of interfaces but one interface cannot implement another interface, because if any interface is implemented then its methods must be defined and interface never has the definition of any method.

CAN 2 interface have same method?

If two interfaces contain a method with the same signature but different return types, then it is impossible to implement both the interface simultaneously. 2) methods with same signature is not allowed in this case.

Can interface implement multiple interfaces?

Yes, we can do it. An interface can extend multiple interfaces in Java.

WHAT IS interface in Java can we implement multiple interfaces in one class?

We can implement multiple Java Interfaces by a Java class. All methods of an interface are implicitly public and abstract. The word abstract means these methods have no method body, only method signature. Java Interface also represents the IS-A relationship of inheritance between two classes.

Does Java support multiple interfaces?

The Java programming language supports multiple inheritance of type, which is the ability of a class to implement more than one interface. An object can have multiple types: the type of its own class and the types of all the interfaces that the class implements.

Can you implement multiple interfaces?