Java tutorial
//package com.java2s; /* CarLogbook. Copyright (C) 2014 Eugene Nadein 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.math.RoundingMode; import java.text.DecimalFormat; import java.text.DecimalFormatSymbols; public class Main { public static DecimalFormat createDecimalFormat(int minInt, int maxInt, int minFract, int maxFract, char separator) { return createDecimalFormat(minInt, maxInt, minFract, maxFract, separator, RoundingMode.HALF_UP); } public static DecimalFormat createDecimalFormat(int minInt, int maxInt, int minFract, int maxFract, char separator, RoundingMode mode) { DecimalFormat format = (DecimalFormat) DecimalFormat.getNumberInstance(); format.setRoundingMode(mode); format.setMaximumFractionDigits(maxFract); format.setMinimumFractionDigits(minFract); format.setMaximumIntegerDigits(maxInt); format.setMinimumIntegerDigits(minInt); DecimalFormatSymbols decimalSymbolComma = new DecimalFormatSymbols(); decimalSymbolComma.setDecimalSeparator(separator); format.setDecimalFormatSymbols(decimalSymbolComma); format.setGroupingUsed(false); return format; } }