static void Main(string[] args)
{
Printer printer = new Printer();
printer.PowerOn();
printer.PrintDocument();
printer.AddPaper(3);
printer.PrintDocument();
printer.PrintDocument();
printer.PrintDocument();
printer.PrintDocument();
printer.PowerOff();
Console.ReadKey();
}
public WaitingState(Printer printer)
{
_printer = printer;
}
public PowerOffState(Printer printer)
{
_printer = printer;
}
public PrintState(Printer printer)
{
_printer = printer;
}