[Amit]

I have this code taken from. Java Fundamentals I and II and yet I can’t solve this:

public class Time2
{
   private int hour;   // 0 - 23
   private int minute; // 0 - 59
   private int second=0; // 0 - 59
 
   // Time2 no-argument constructor: initializes each instance variable
   // to zero; ensures that Time2 objects start in a consistent state
   public Time2()
   {
      this( 0, 0, 0 ); // invoke Time2 constructor with three arguments
   } // end Time2 no-argument constructor

   // Time2 constructor: hour supplied, minute and second defaulted to 0
   public Time2( int h )
   {
      this( h, 0, 0 ); // invoke Time2 constructor with three arguments
   } // end Time2 one-argument constructor

   // Time2 constructor: hour and minute supplied, second defaulted to 0
   public Time2( int h, int m )
   {
      this( h, m, 0 ); // invoke Time2 constructor with three arguments
   } // end Time2 two-argument constructor

   // Time2 constructor: hour, minute and second supplied
   public Time2( int h, int m, int s )
   {
      setTime( h, m, s ); // invoke setTime to validate time
   } // end Time2 three-argument constructor

   // Time2 constructor: another Time2 object supplied
   public Time2( Time2 time )
   {
      // invoke Time2 three-argument constructor
      this( time.getHour(), time.getMinute(), time.getSecond() );
   } // end Time2 constructor with a Time2 object argument

   // Set Methods
   // set a new time value using universal time; ensure that
   // the data remains consistent by setting invalid values to zero
   public void setTime( int h, int m, int s )
   {
      setHour( h );   // set the hour
      setMinute( m ); // set the minute
      setSecond( s ); // set the second
   } // end method setTime

   // validate and set hour
   public void setHour( int h )
   {
      hour= ((h>=0 && h<24) ? h:0;
   
   } // end method setHour

   // validate and set minute
   public void setMinute( int m )
   {
     minute= ((m>=0 && m<60) ? m:0;
 
   } // end method setMinute

   // validate and set second
   public void setSecond( int s )
   {
       second= ((s>=0 && s<60) ? s:0;
 
   } // end method setSecond

   // Get Methods
   // get hour value
   public int getHour()
   {
       return hour;
   } // end method getHour

   // get minute value
   public int getMinute()
   {
      return minute;
     
   } // end method getMinute

   // get second value
   public int getSecond()
   {
      return second;
   } // end method getSecond

   // convert to String in universal-time format (HH:MM:SS)
   public String toUniversalString()
   {
      return String.format(
         "%02d:%02d:%02d", getHour(), getMinute(), getSecond() );
   } // end method toUniversalString

   // convert to String in standard-time format (H:MM:SS AM or PM)
   public String toString()
   {
      return String.format( "%d:%02d:%02d %s",
         ( (getHour() == 0 || getHour() == 12) ? 12 : getHour() % 12 ),
         getMinute(), getSecond(), ( getHour() < 12 ? "AM" : "PM" ) );
   } // end method toString
} // end class Time2

What I need to do is reduce properties in the clas to only one and display everything in seconds. I am not allowed to modify anything except getters and setters...So, can anybody help?

[Abhey]

Given a single property representing the number of seconds, you should be able to break it down into a number of whole hours, whole minutes and remaining seconds.

Suppose you have 5000 seconds, this is the same as 1 hour, 23 minutes, 20 seconds.

So store the data in a total_seconds property. Rewrite the getters to use the the right math: getHour() { return total_seconds % 3600;} and so forth. Then the setters do the opposite:

setHour( int h ) {
int hr = (h >= 0 && h <= 23) ? h : 0;
total_seconds = 3600 * hr + 60 * getMinute() + getSecond();
}