Here you can find the source of decimalFormat(double d)
public static String decimalFormat(double d)
//package com.java2s; /* /* w w w . j ava 2 s .c o m*/ * Copyright (C) 2000 - 2008 TagServlet Ltd * * This file is part of Open BlueDragon (OpenBD) CFML Server Engine. * * OpenBD is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * Free Software Foundation,version 3. * * OpenBD 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 OpenBD. If not, see http://www.gnu.org/licenses/ * * Additional permission under GNU GPL version 3 section 7 * * If you modify this Program, or any covered work, by linking or combining * it with any of the JARS listed in the README.txt (or a modified version of * (that library), containing parts covered by the terms of that JAR, the * licensors of this Program grant you additional permission to convey the * resulting work. * README.txt @ http://www.openbluedragon.org/license/README.txt * * http://www.openbluedragon.org/ */ import java.text.DecimalFormatSymbols; import java.util.Locale; public class Main { public static String decimalFormat(double d) { java.text.DecimalFormat DF = new java.text.DecimalFormat("#,##0.00", new DecimalFormatSymbols(Locale.US)); return DF.format(d); } }