<%
int num = 1234567890;

DecimalFormat number_for = new DecimalFormat("###,###,###,###");
String num_format = number_for.format(num);

out.println(num_format);
out.println("<br>");

NumberFormat numfor = NumberFormat.getNumberInstance();
String num_for = numfor.format(num);
out.println(num_for);

%>