public class TimeConvert
{

        public String doConverstion(String input)
        {
                String result = "";
                String []array = null;
                String ampm = "AM";

                try
                {
                        array= input.split("[:]");
                        if (array[0].length() < 2)
                        {
                                throw new TimeFormatException();
                        }

                        int hour = Integer.parseInt(array[0]);
                        int min = Integer.parseInt(array[1]);

						if (hour > 12)
						{
							hour-=12;
							ampm = "PM";
						}
                        result = "" + hour + ":" + min + ampm;


                        if(hour > 24)
                        {
                                System.out.println("Hours must be equal to or less than 24");
                        }

                        if (min > 59)
						{
								System.out.println("Minutes must be less than 60");
						}
                }
                catch(TimeFormatException tfe)
                {
                        System.out.println(tfe.getMessage());
                }
                catch(Exception ex)
				{
						System.out.println(ex.getMessage());
				}
                return result;
        }
}