设计模式 命令模式

这个例子用java写成，我现在发现，java与c#差别不很大

先写一个厨师类

public class Barbecuer {
	public void BakeMutton()
	{
		System.out.println("烤羊肉串");
	}
	
	public void BakeChickenWing()
	{
		System.out.println("烤鸡翅！");
	}
}

在写一个命令类

public abstract class Command {
	protected Barbecuer receiver;
	public Command(Barbecuer receiver)
	{
		this.receiver=receiver;
	}
	abstract public void ExecuteCommand();
}

写两个类继承command类

public class BakeMuttonCommand extends Command{

	public BakeMuttonCommand(Barbecuer receiver) {
		super(receiver);
		// TODO Auto-generated constructor stub
	}

	@Override
	public void ExecuteCommand() {
		// TODO Auto-generated method stub
		receiver.BakeMutton();
	}
	

}

public class BakeChickenWingCommand  extends Command{

	public BakeChickenWingCommand(Barbecuer receiver) {
		super(receiver);
		// TODO Auto-generated constructor stub
	}

	@Override
	public void ExecuteCommand() {
		// TODO Auto-generated method stub
		receiver.BakeChickenWing();
	}

}

写服务员类

public class Waiter {
	private Command command;
	
	public void SetOrder(Command command)
	{
		this.command=command;
	}
	
	public void Notify()
	{
		command.ExecuteCommand();
	}
}

写测试类

public class Program {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		
		//开店前得准备
		Barbecuer boy =new Barbecuer();
		Command bakeMuttonCommand1 = new BakeMuttonCommand(boy);
		Command bakeMuttonCommand2= new BakeMuttonCommand(boy);
		Command bakeChickenWingCommand1 = new BakeChickenWingCommand(boy);
		Waiter girl=new Waiter();
		
		//开门营业
		girl.SetOrder(bakeMuttonCommand1);
		girl.Notify();
		girl.SetOrder(bakeMuttonCommand2);
		girl.Notify();
		girl.SetOrder(bakeChickenWingCommand1);
		girl.Notify();
		

	}

}