Here you can find the source of doubleToString(final double d, final int decimalPlaces)
public static String doubleToString(final double d, final int decimalPlaces)
//package com.java2s; /******************************************************************************* * Copyright (C) 2014 University of Massachusetts Medical School * Alessandro Rigano (Program in Molecular Medicine) * Caterina Strambio De Castillia (Program in Molecular Medicine) * * Created by the Open Microscopy Environment inteGrated Analysis (OMEGA) team: * Alex Rigano, Caterina Strambio De Castillia, Jasmine Clark, Vanni Galli, * Raffaello Giulietti, Loris Grossi, Eric Hunter, Tiziano Leidi, Jeremy Luban, * Ivo Sbalzarini and Mario Valle.// w w w .ja v a 2s . co m * * Key contacts: * Caterina Strambio De Castillia: caterina.strambio@umassmed.edu * Alex Rigano: alex.rigano@umassmed.edu * * 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; public class Main { public static String doubleToString(final double d, final int decimalPlaces) { String dec = ""; for (int i = 0; i < decimalPlaces; i++) { dec = dec + "#"; } final DecimalFormat df = new DecimalFormat("#." + dec); return df.format(d); } }