public class ClockDisplay
{
    private NumberDisplay hours;
    private NumberDisplay minutes;
    private String displayString;    // simulates the actual display

    /**
     * Constructor for ClockDisplay objects. This constructor
     * creates a new clock set at 00:00.
     */
    public ClockDisplay()
    {
        hours = new NumberDisplay(13);
        minutes = new NumberDisplay(60);
        updateDisplay();
    }

    /**
     * Constructor for ClockDisplay objects. This constructor
     * creates a new clock set at the time specified by the
     * parameters.
     */
    public ClockDisplay(int hour, int minute)
    {
        hours = new NumberDisplay(13);
        minutes = new NumberDisplay(60);
        setTime(hour, minute);
    }

    /**
     * This method should get called once every minute - it makes
     * the clock display go one minute forward.
     */
public void timeTick()
 {
    int hour;

    minutes.increment();
    if(minutes.getValue() == 0) {  // it just rolled over!
    hours.increment();
    hour = hours.getValue() + 1;
   {
    if(hours.getValue() > 12)

    hour = hours.getValue() - 12;
   }
    }
    {
    updateDisplay();
    }
    }

public void timeMode()
{
           int hours = 0;  //initializing = setting a value
           int minutes = 0;
           if(hours ==0 && minutes == 0){
           System.out.println("It is currently Midnight");
           if(hours == 12 && minutes == 0)
           System.out.println("It is currently Noon");
           if(hours > 0) {
           System.out.println("It is currently AM");
           if(hours > 12)
           System.out.println("It is currently PM");
           }
           }
}

    public void setTime(int hour, int minute)
    {
        hours.setValue(hour);
        minutes.setValue(minute);
        updateDisplay();
    }

    /**
     * Return the current time of this display in the format HH:MM.
     */
    public String getTime()
    {
        return displayString;
    }

    /**
     * Update the internal string that represents the display.
     */
    private void updateDisplay()
    {
        displayString = hours.getDisplayValue() + ":" +
                        minutes.getDisplayValue();
    }


}