$/**$ Constructor for ClockDisplay objects. This constructor

$*$ creates a new clock and set at $00$:$00$:$00.$

$*/$

public ClockDisplay$()$

$\{$

hours $=$ new NumberDisplay$(24)$;

minutes $=$ new NumberDisplay$(60)$;

seconds $=$ new NumberDisplay$(60)$; $//$ create a new NumberDisplay for seconds with limit $60$

updateDisplay$()$;

$\}$

$/**$ Constructor for ClockDisplay objects. This constructor

$*$ creates a new clock set at the time specified by the parameters.

$*$ Add parameter for seconds

$*/$

public ClockDisplay$($int hour, int minute, int second$)$

$\{$

hours $=$ new NumberDisplay$(24)$;

minutes $=$ new NumberDisplay$(60)$;

seconds $=$ new NumberDisplay$(60)$;

setTime$($hour$,$ minute, second$)$;

$\}$

$/**$ This method should get called once every second $-$ it makes

$*$ the clock display go one second forward

$*/$

public void timeTick$()$

$\{$

seconds.increment$()$; $//$ increment seconds

if$($seconds$.$getVaue$()==0)//$ seconds just rolled over?

$\{$

minutes.increment$()$; $//$ increment the minutes

if$($minutes$.$getVaue$()==0)//$ minutes just rolled over?

hours.increment$()$; $//$ increment the hours

$\}$

updateDisplay$()$;

$\}$

$/**$ Set the time of the display to the specified hour, minute and second

$*$ Add second parameter to the method

$*/$

public void setTime$($int hour, int minute, int second$)$

$\{$

hours.setValue$($hour$)$;

minutes.setValue$($minute$)$;

seconds.setValue$($second$)$;

updateDisplay$()$;

$\}$

$/**$ Return the current time if this display in the format HH:MM:SS

$*/$

public String getTime$()$

$\{$

return displayString;

$\}$

$/**$ Update the internal string that represents the display

$*$ Add seconds display to include seconds in the time

$*/$

private void updateDisplay$()$

$\{$

displayString $=$ hours.getDisplayValue$()+"$:$"+$ minutes.getDisplayValue$()+"$:$"$

$+$ seconds.getDisplayValue$()$;

$\}$

$\}$