I read about object of an interface. But really it is an object of a class with no any name.
How it is possible to have a class with no any name when we try to create object for interface.

InterfaceName obj = new ImplementedClassName();

and

InterfaceName obj = new (InterfaceName) AnyClassName();

what is happening here?

Technically they do have names, but you cannot reference them. but your examples aren't anonymous classes

To use an anonymous class that implements an interface, you'd use the syntax:
InterfaceName obj = new InterfaceName(){
// methods here
}

Your examples are just using the interface as a reference type. In your second example, you will get a classcastexception if the class doesn't implement the interface. implementing the methods is insufficient.

This post was edited by carteblanche on Dec 4 2013 07:04am