teachableprogrammer.java

来自「疯狂Java讲义_源码(含Java设计模式CHM」· Java 代码 · 共 41 行

/**
 * Description:
 * <br/>Copyright (C), 2005-2008, Yeeku.H.Lee
 * <br/>This program is protected by copyright laws.
 * <br/>Program Name:
 * <br/>Date:
 * @author  Yeeku.H.Lee [e-mail]
 * @version  1.0
 */
public class TeachableProgrammer extends Programmer
{
	public TeachableProgrammer(){}
	public TeachableProgrammer(String name)
	{
		super(name);
	}
	//教学工作依然由TeachableProgrammer类定义
	private void teach()
	{
		System.out.println(getName() + "教师在讲台上讲解...");
	}
	private class Closure implements Teachable
	{
		/*
		 非静态内部类回调外部类实现work方法，非静态内部类引用的作用仅仅是
		 向客户类提供一个回调外部类的途径
		 */
		public void work()
		{
			teach();
		}	
	}
	//返回一个非静态内部类引用，允许外部类通过该非静态内部类引用来回调外部类的方法
	public Teachable getCallbackReference()
	{
		return new Closure();
	}
}