shutdowncommand.java

程序设计模式java入门源码大全

public class ShutDownCommand implements Command
{
  Receiver receiver;

  public ShutDownCommand(Receiver r)
  {
    receiver = r;
  }

  public void execute()
  {
    receiver.connect();
    receiver.shutdown();
    receiver.disconnect();
    System.out.println();
  }

  public void undo()
  {
    System.out.println("Undoing...");
    receiver.connect();
    receiver.reboot();
    receiver.disconnect();
    System.out.println();
  }
}