Here you can find the source of getDecimalFormat(int decimalPlaces, Locale locale)
private static DecimalFormat getDecimalFormat(int decimalPlaces, Locale locale)
//package com.java2s; /*/*from w ww . j a v a2 s . co m*/ * Utility class to simplify the use of BigDecimals * Copyright (C) 2012 Martin Absmeier, IT Consulting Services * * This program 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. * * This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */ import java.text.DecimalFormat; import java.util.Locale; public class Main { private static DecimalFormat getDecimalFormat(int decimalPlaces, Locale locale) { StringBuffer sb = new StringBuffer(); sb.append("#,###,##0."); for (int i = 0; i < decimalPlaces; i++) { sb.append('0'); } DecimalFormat df = (DecimalFormat) DecimalFormat.getInstance(locale); df.applyPattern(sb.toString()); return df; } }