headfirst.combining.observer

Class QuackCounter

java.lang.Object

headfirst.combining.observer.QuackCounter

All Implemented Interfaces:

Quackable, QuackObservable

public class QuackCounter
extends java.lang.Object
implements Quackable

Field Summary

Fields

Modifier and Type	Field and Description
(package private) Quackable	duck
(package private) static int	numberOfQuacks

Constructor Summary

Constructors

Constructor and Description
QuackCounter(Quackable duck)

Method Summary

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

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

duck

Quackable duck

numberOfQuacks

static int numberOfQuacks

Constructor Detail

QuackCounter

public QuackCounter(Quackable duck)

Method Detail

quack

public void quack()

Specified by:

quack in interface Quackable

getQuacks

public static int getQuacks()

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