Here you can find the source of formatCurrency(double amount, int precision, Locale locale)
public static String formatCurrency(double amount, int precision, Locale locale)
//package com.java2s; /*//from w ww.java 2 s . c o m * Copyright 2002 Sun Microsystems, Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * - Redistribution in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * Neither the name of Sun Microsystems, Inc. or the names of * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * This software is provided "AS IS," without a warranty of any * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY * EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES * SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR * DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN * OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR * FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR * PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF * LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE SOFTWARE, * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. * * You acknowledge that Software is not designed, licensed or intended * for use in the design, construction, operation or maintenance of * any nuclear facility. */ import java.util.Locale; import java.text.NumberFormat; import java.text.DecimalFormat; public class Main { public static String formatCurrency(double amount, int precision, String pattern, Locale locale) { NumberFormat nf = NumberFormat.getCurrencyInstance(locale); DecimalFormat df = (DecimalFormat) nf; df.setMinimumFractionDigits(precision); df.setMaximumFractionDigits(precision); df.setDecimalSeparatorAlwaysShown(true); df.applyPattern(pattern); return df.format(amount); } public static String formatCurrency(double amount, int precision, Locale locale) { NumberFormat nf = NumberFormat.getCurrencyInstance(locale); nf.setMinimumFractionDigits(precision); nf.setMaximumFractionDigits(precision); return nf.format(amount); } }