headfirst.combining.observer

Class RubberDuck

java.lang.Object

headfirst.combining.observer.RubberDuck

All Implemented Interfaces:

Quackable, QuackObservable

public class RubberDuck
extends java.lang.Object
implements Quackable

Constructor Summary

Constructors

Constructor and Description
RubberDuck()

Method Summary

Modifier and Type	Method and Description
void	notifyObservers()
void	quack()
void	registerObserver(Observer observer)
java.lang.String	toString()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

RubberDuck

public RubberDuck()

Method Detail

quack

public void quack()

Specified by:

quack in interface Quackable

registerObserver

public void registerObserver(Observer observer)

Specified by:

registerObserver in interface QuackObservable

notifyObservers

public void notifyObservers()

Specified by:

notifyObservers in interface QuackObservable

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object