control.java

来自「《Java与模式》一书的源代码」· Java 代码 · 共 32 行

package com.javapatterns.command.television;

public class Control
{
    private Command onCommand;
    private Command offCommand;
    private Command changeChannel;

    public Control(Command on, Command off, Command channel)
    {
        onCommand = on;
        offCommand = off;
        changeChannel = channel;
    }

    public void turnOn()
    {
        onCommand.execute();
    }

    public void turnOff()
    {
        offCommand.execute();
    }

    public void changeChannel()
    {
        changeChannel.execute();
    }
}