命令模式(撤销) - 代码(Java)

/** * @time 2014年6月16日 */ package command; import javax.crypto.spec.IvParameterSpec; /** * @author C.L.Wang * */ public class RemoteLoader { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub RemoteControl remoteControl = new RemoteControl(); Light livingRoomLight = new Light("Living Room"); Light kitchenLight = new Light("Kitchen"); CeilingFan ceilingFan = new CeilingFan("Living Room"); GarageDoor garageDoor = new GarageDoor(""); Stereo stereo = new Stereo("Living Room"); LightOnCommand livingRoomLightOn = new LightOnCommand(livingRoomLight); LightOffCommand livingRoomLightOff = new LightOffCommand(livingRoomLight); LightOnCommand kitchenLightOn = new LightOnCommand(kitchenLight); LightOffCommand kitchenLightOff = new LightOffCommand(kitchenLight); CeilingFanHighCommand ceilingFanHigh = new CeilingFanHighCommand(ceilingFan); CeilingFanMediumCommand ceilingFanMedium = new CeilingFanMediumCommand(ceilingFan); CeilingFanOffCommand ceilingFanOff = new CeilingFanOffCommand(ceilingFan); GarageDoorOnCommand garageDoorOn = new GarageDoorOnCommand(garageDoor); GarageDoorOffCommand garageDoorOff = new GarageDoorOffCommand(garageDoor); StereoOnWithCDCommand stereoOnWithCD = new StereoOnWithCDCommand(stereo); StereoOffCommand stereoOffCommand = new StereoOffCommand(stereo); remoteControl.setCommand(0, livingRoomLightOn, livingRoomLightOff); //设这遥控器 remoteControl.setCommand(1, kitchenLightOn, kitchenLightOff); remoteControl.setCommand(2, ceilingFanHigh, ceilingFanOff); remoteControl.setCommand(3, ceilingFanMedium, ceilingFanOff); remoteControl.setCommand(4, stereoOnWithCD, stereoOffCommand); remoteControl.onButtonWasPushed(2); //高速 remoteControl.offButtonWasPushed(2); //关闭高速 System.out.println(remoteControl); remoteControl.undoButtonWasPushed(); //退回高速 System.out.println(); remoteControl.onButtonWasPushed(3); //中速 System.out.println(remoteControl); remoteControl.undoButtonWasPushed(); //高速 } }