//Time1.java
// Time1 class definition

import java.text.DecimalFormat;  // used for number formatting

// This class maintains the time in 24-hour format
public class Time1  {

   private int hour;     // 0 - 23
   private int minute;   // 0 - 59
   private int second;   // 0 - 59


   public Time1() // no-argument (default) constructor           
   {
      setTime( 0, 0, 0 ); // initializes instance variables to 0 through mutator method

   }


   // Set a new time value using universal time. Perform 
   // validity checks on the data. Set invalid values to zero.
   public void setTime( int h, int m, int s )  // mutator method
   {
      hour = ( ( h >= 0 && h < 24 ) ? h : 0 );
      minute = ( ( m >= 0 && m < 60 ) ? m : 0 );
      second = ( ( s >= 0 && s < 60 ) ? s : 0 );
   }

   // Convert to String in universal-time format

   public String toUniversalString()
   {
      DecimalFormat twoDigits = new DecimalFormat( "00" );
      return twoDigits.format( hour ) + ":" +
             twoDigits.format( minute ) + ":" +
             twoDigits.format( second );
   }

   // Convert to String in standard-time format

   public String toString()
   {
      DecimalFormat twoDigits = new DecimalFormat( "00" ); 
      return ( (hour == 12 || hour == 0) ? 12 : hour % 12 ) +
             ":" + twoDigits.format( minute ) +
             ":" + twoDigits.format( second ) +
             ( hour < 12 ? " AM" : " PM" );
   }
}