gistfile1.java

   /**
    * If the parameter passed to the method is numerical or can be converted to a numerical value,
    * we return true, otherwise we return false
    */
   public boolean canConvertToInteger(String value)
   {
      try
      {
         Integer.parseInt(value);
      }
      catch (Exception ex)
      {
         return false;
      }
      return true;
   }