Java program to convert the number in time format

Given below is the java program to print the time given in number format to String format.

For example: if you give input as 5 45, the below program will print Quarter to six

import java.util.*;
class TimeTest 
{
 public static void main(String[] args) 
 {
  String addString="";
  HashMap<Integer,String> hm=new HashMap<Integer,String>();
  hm.put(1,"one");hm.put(2,"two");hm.put(3,"three");hm.put(4,"four");hm.put(5,"five");
  hm.put(6,"six");hm.put(7,"seven");hm.put(8,"eight");hm.put(9,"nine");hm.put(10,"ten");
  hm.put(11,"eleven");hm.put(12,"twelve");hm.put(13,"thirteen");hm.put(14,"forteen");hm.put(15,"fifteen");
  hm.put(16,"sixteen");hm.put(17,"seventeen");hm.put(18,"eighteen");hm.put(19,"ninteen");hm.put(20,"twenty");
  hm.put(21,"twenty one");hm.put(22,"twenty two");hm.put(23,"twenty three");hm.put(24,"twenty four");hm.put(25,"twenty five");
  hm.put(26,"twenty six");hm.put(27,"twenty seven");hm.put(28,"twenty eight");hm.put(29,"twenty nine");hm.put(30,"thirty");

  Scanner scn=new Scanner(System.in);

  int hour=scn.nextInt();
  int minute=scn.nextInt();

  if(minute==00)
  {
   addString=hm.get(hour)+" o' clock";
  }
  else
   if(minute==15)
  {
   addString="quarter past "+hm.get(hour);
  }
  else
   if(minute==30)
  {
   addString="half past "+hm.get(hour);
  }
  else 
   if(minute>30&&minute==45)
  {
   addString="quarter to "+hm.get(hour+1); 
  }
  else
   if(minute>30&&minute!=45)
  {
   minute=60-minute;
   String midString="minute";
   String min=String.valueOf(minute);
   if(min.length()>1)
   {
    midString="minutes";
   }
   addString=hm.get(minute)+" "+midString+" to "+hm.get(hour+1); 
  }
  
  else
  {
   String midString="minute";
   String min=String.valueOf(minute);
   if(min.length()>1)
   {
    midString="minutes";
   }
   
   addString=hm.get(minute)+" "+midString+" past "+hm.get(hour); 
  }

  System.out.println(addString);

 }
}

Sample output