Need help identifying the 'override method' pattern used in this code

The following is a simplification from a project I am working on.

We have Talker niceTalker who says "Good morning! My name is Joe". Then we have a schitzophrenic rudeTalker, who says "He is me".

It took me a while to understand what the code does. To me, this seems an awfully complicated way of overriding Talkers talk() method. Furher more, TalkModifier is used as a command in Command pattern (not shown).

Why take this approach, instead of say polymorphism through inheritance? Is this a known pattern, which one?

public interface Talker {
    String getName();
    void talk();
}

-

public interface TalkModifier {
    public Talker modify(Talker talker);
}

-

class NiceGuy implements Talker {
    @Override
    public void talk() {
        System.out.println("Good morning! My name is " + getName() +".");
    }
    @Override
    public String getName() {
        return "Joe";
    }
}

public class Application {

    public static void main(String[] args) {
        Talker niceTalker = new NiceGuy();

        TalkModifier rudeTalker = new TalkModifier() {
            public Talker modify(final Talker talker) {
                return new Talker() {
                    @Override
                    public void talk() {
                        System.out.println("He is me.");
                    }
                    @Override
                    public String getName() {
                        return talker.getName();
                    }
                };
            }
        };

        niceTalker.talk();
        System.out.println();
        rudeTalker.modify(niceTalker).talk();   
    }
}