Singleton Method Ruby vs Java

I thought this was cool

// This was the closest i could get in java.

// still confused about the terminology 'SingletonMethod'
public class SingletonMethodJava {

    void theOnlyMethod(){
        System.out.println("theOnlyMethod");
    }

    public static void main(String[] args){

         new SingletonMethodJava(){
              void addedOneMoreMethod(){
                System.out.println("addedOneMoreMethod");
              }
         }.addedOneMoreMethod();
    }
}

But isn't this cooler ?

class SingletonMethodRuby

    def theOnlyMethod
        puts "theOnlyMethod";
    end
end

singleton_method = SingletonMethodRuby.new

def singleton_method.addedOneMoreMethod
 puts "addedOneMoreMethod";
end

singleton_method.addedOneMoreMethod