设计模式之六：命令模式(简单实现(餐厅点餐模拟流程))

package com.jyu.command;

/**命令接口*/
public interface Command {

public void execute();
}

package com.jyu.command;

public class LightOnCommand implements Command {

Light light;

public LightOnCommand(Light light) {
this.light = light;
}

@Override
public void execute() {
light.on();
}

}

package com.jyu.command;

public class RemoteCOntrolTest {

/**
* @param args
*/
public static void main(String[] args) {

SimpleRemoteControl remote = new SimpleRemoteControl();
Light light = new Light();
LightOnCommand lightOn = new LightOnCommand(light);

remote.setCommand(lightOn);
remote.buttonWasPressed();
}

}

package com.jyu.command;

/**遥控器*/
public class SimpleRemoteControl {

Command slot;

public SimpleRemoteControl() {    }

public void setCommand(Command command) {
this.slot = command;
}

public void buttonWasPressed(){
slot.execute();
}

}

package com.jyu.command;

public class Light {

public void on(){
System.out.println("The Light is on...");
}

public void off(){
System.out.println("The Light is off...");
}
}