rundiagnosticscommand.java

来自「程序设计模式java入门源码大全」· Java 代码 · 共 24 行

public class RunDiagnosticsCommand implements Command
{
  Receiver receiver;

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

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

  public void undo()
  {
    System.out.println("Can't Undo.");
    System.out.println();
  }
}