substance.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.chemical;

/*
 * 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.
 */
/**
 * This class represents a batch of chemicals.
 *
 * @author Steven J. Metsker
 *
 */
public class Substance 
{
	protected double grams;
	protected Chemical_1 chemical;


/**
 * Return the number of moles in this substance. 
 *
 * @return the number of moles in this substance. See 
 *         the glossary in "The Design Patterns Java 
 *         Workbook" for a definition of "mole."
 */
public double getMoles()
{
	return chemical.moles(grams);
}
}