Here you can find the source of formatDouble(Double d, NumberFormat format)
public static String formatDouble(Double d, NumberFormat format)
//package com.java2s; /*//from w w w.j ava 2 s .com * B3P Commons Core is a library with commonly used classes for webapps. * Included are clieop3, oai, security, struts, taglibs and other * general helper classes and extensions. * * Copyright 2000 - 2008 B3Partners BV * * This file is part of B3P Commons Core. * * B3P Commons Core is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * B3P Commons Core is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with B3P Commons Core. If not, see <http://www.gnu.org/licenses/>. */ import java.text.NumberFormat; public class Main { /** * Formatteert d volgens format. Geeft lege String indien d null is. */ public static String formatDouble(Double d, NumberFormat format) { if (d == null) { return ""; } else { return format.format(d.doubleValue()); } } /** * Formatteert d volgens format */ public static String formatDouble(double d, NumberFormat format) { return format.format(d); } }