TERM 2 Assignment 1

/*
 * AP CS MOOC
 * Term 2 - Assignment 1: Time
 * A class which represents the time of day in hours and seconds.
 */

public class Time
{
     private int hour;
     private int minute;

     /* Complete required constructors and methods here */

     /*
      *Default constructor that sets time to 0000.
      */
     public Time()
     {
       hour = 0;
       minute = 0;

     }

     /*
      * If h is between 1 and 23 inclusive, set the hour to h.
      * Otherwise, set the hour to 0. If m is between 0 and 59 inclusive,
      * set the minutes to m. Otherwise, set the minutes to 0.
      */
     public Time(int h, int m)
     {
       if (h >= 1 && h <= 23)
         hour = h;
       else
         hour = 0;
       if (m >= 0 && m <= 59)
         minute = m;
       else
         m = 0;
     }

     /* Returns the time as a String of length 4 in the format: 0819.
      * Notice that if the hour or minute is one digit, it should
      * print a zero first. For example, 6 should print as 06.
     */
     public String toString()
     {
       if (hour/10 == 0)
         System.out.print("0" + hour);
       else
         System.out.print(hour);
       if (minute/10 == 0)
         System.out.print("0" + minute);
       else
         System.out.print(minute);
       return "";
     }

     /*
      * Returns the time as a String converted from military time
      * to standard time. For example, 0545 becomes 5:45 AM and
      * 1306 becomes 1:06 PM.
      */
     public String convert()
     {
       int flag = 0;
       int f2 = 0;
       int h = hour;
       if (hour > 12)
       {
         h -= 12;
         flag = 1;
       }
       else if (hour == 0)
         h = 12;
       if (minute/10 == 0)
         f2 = 1;
       if (f2 == 0)
       System.out.print(h + ":" + minute + " ");
       else
         System.out.print(h + ":0" + minute + " ");
       if (flag == 1)
         System.out.print("PM");
       else
         System.out.print("AM");

       return "";
     }

    /*
     * Advances the time by one minute.
     * Remember that 60 minutes = 1 hour.
     * Therefore, if your time was 0359, and you add one minute,
     * it becomes 0400. 2359 should increment to 0000.
     */
    public void increment()
    {
      if (minute < 59)
        minute++;
      else
      {
        if (hour < 23)
          hour++;
        else
          hour = 0;
        minute = 0;
      }

    }

}