is there a way to add a default constructor to an interface

Question

With default methods now added to Java 8, is there any way to create a default constructor?

I\'ve tried:

public interface KadContent
{
    publ         


        

Answer 1

Yes, kind of! You can do:

public interface MyInterface {
  MyInterface NO_OP = new MyInterface() {};
}

Answer 2

Constructors are when the objects come into picture and the fact that a object for an interface cannot be constructed is SOUND, be it Java, C# or Java8

So... if you have any functionality that you would want to define by default in the interface level, Java8 introduces the concept of Default Methods.

Answer 3

You need to add the default constructor to the class you want to serialize.

Answer 4

It does not make sense to provide an Constructor in an Interface.

Check if it makes sense for you to provide a default initialize() method instead.

Answer 5

No, this is not possible.

1. It does not make sense in an interface
2. If you implement an interface, the class has already a default constructor (the one without arguments)

You may want to use an abstract class if you want implementations have a "default constructor".