Time Converter 2017

/*
 * 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;

     public Time()
     {
       hour = 00;
       minute = 00;
     }

     public Time(int h, int m)
     {
       hour = h;
       minute = m;

       if (h <= 23 && h >= 1)
       {
         hour = h;
       }
       else
         hour = 0;

       if (m <= 59 && m >= 0)
       {
        minute = m;
       }
       else
         minute = 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()
     {
       String min = "";
       String ho = "";
       if (minute >=0 && minute <= 9)
       {
         min = "0" + minute;
       }
       else
         min = "" + minute;

       if (hour >=0 && hour <= 9)
       {
         ho = "0" + hour;
       }
       else
         ho = "" + hour;

       String newTime = ho  + min;

       return newTime;
     }

     /*
      * 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()
     {
       String tod = "";
       String min = minute + "";
       String ho = hour + "";
       String standard = "";

       if (hour > 12 && hour <=23)
       {
        tod = " PM";
       }
       else
         tod = " AM";
       if ( tod == " PM")
       {
         ho = hour - 12 + "";
       }
       if (hour == 12)
       {
         tod = " PM";
       }
       if (hour == 0)
       {
         ho = "12";
       }
       if (minute < 10)
         min = "0" + minute;

       standard = ho + ":" + min + tod;
       return standard;
     }

    /*
     * 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()
    {
      minute ++;
      if (minute == 60)
      {
      hour ++;
      minute = 0;
      }
      if (hour == 24)
      {
        hour = 0;
        minute = 0;
      }



    }

}