public class DecFtDemo  {  
   public static void main ( String f [  ]  )   {  
     DecimalFormat df = new DecimalFormat (  ) ; 
     System.out.println (  df.format (  -4.3279 )   ) ; 
     System.out.println (  df.format (  2174534.3279 )   ) ; 
    }  
  }