import java.text.*;

  public class NumberFormatTests
  {
    public static void main (String[] args)
    {
      double amount = 100.0;
      NumberFormat nf = new DecimalFormat("#,###.00");
      for ( double d=0; d<200; d+=50.5 )
      {
        amount = amount + d;
        System.out.println( "" );
        System.out.println( "amount without formatting: " + amount );
        System.out.println( "amount with    formatting: " + nf.format(amount) );
      }
    }
  }