java与模式随书源码,作者阎宏博士,包括书中各个设计模式的实现,没有密码,

				package com.javapatterns.visitor.inventory;
				
				public class Case extends Equipment 
				{
					public double price()
				    {
				        return 30.00;
				    }
				
					public void accept(Visitor v)
				    {
				        System.out.println("Case has been visited.");
				        v.visitCase(this);
				    }
				}