To reverse the numbers

class ReverseNumber
{
   public static void main(String args[])
   {
      int n, reverse = 0;

     
     
      n = 123;

      while( n != 0 )
      {
          reverse = reverse * 10;
          reverse = reverse + n%10;
          n = n/10;
      }

      System.out.println("Reverse of entered number is "+reverse);
   }
}