public class Cooker
{
  private double temperature;
  private Dish dishInOven;

  public void setTemperature (double t)
    {
      temperature = t;
    }

  public String toString ()
    {
      return "temperature = " + temperature;
    }

  public void contains (Dish theDish)
    {
      dishInOven = theDish;
    }

  public void cook (int duration)
    {
      double dishTemp = dishInOven.getTemperature ();
      double cookerTemp = temperature;

      System.out.println ();

      // increment dish temperature slowly
      for (int i = 0; i < duration; i++)
        {
          dishTemp = dishTemp + ((cookerTemp - dishTemp) / 10);

          if (dishTemp <= cookerTemp)
            {
              dishInOven.setTemperature (dishTemp);
            }

          System.out.print (dishInOven.getTemperature () + " ");
        }

      System.out.println ();
    }

} // end of class Cooker