12.18 java中的view，ibatis dao
Java内部类当初的设计目的应该是实现多重继承，后来发现内部类还带来了其他好处，如可以使用内部类包装一些函数，实现函数级别的权限控制等。
Java中，LIst.subList()等方法产生的是一个view，即不是传值，而仅是引用。似乎在java中除了primitive类，其他类都需new才能产生新对象。
iBatis DAO框架图
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import java.util.Random;
/**
* 排序测试类
*
* 排序算法的分类如下：
* 1.插入排序（直接插入排序、折半插入排序、希尔排序）；
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package org.lambdasoft.web.support;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
import javax.servlet.http.HttpSession;
import org.apache.struts2.ServletActionContext;
import org.lambdasoft.web.Enviroment;
public class SessionSupport {
private SessionS ......
/*
* CookieSupport.java
* Copyright (C) 2007-3-19 <JustinLei@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version ......
