billingcheckus.java

本书透彻讲解了经典的《设计模式：可复用面向对象软件的基础》一书涵盖的23种基本设计模式。本书将这些设计模式分成五类：接口型模式、责任型模式、构造型模式、操作型模式

package com.oozinoz.check.us;

import com.oozinoz.check.*;

/*
 * Copyright (c) 2001 Steven J. Metsker.
 * 
 * Steve Metsker makes no representations or warranties about
 * the fitness of this software for any particular purpose, 
 * including the implied warranty of merchantability.
 *
 * Please use this software as you wish with the sole
 * restriction that you may not claim that you wrote it.
 */
/**
 * Instances of this class can check attributes of 
 * a billing address in the U.S.
 */
public class BillingCheckUS implements BillingCheck 
{



/**
 * Return true if this billing address is residential.
 *
 * @return true if this billing address is residential
 */
public boolean isResidential()
{
	return true;
}
}