Here you can find the source of formatDoubleAsPercentString(Double d)
public static String formatDoubleAsPercentString(Double d)
//package com.java2s; /********************************************************************************** * * $Id:$//from w w w . j a v a2 s . c om * *********************************************************************************** * * Copyright (c) 2008, 2009 The Regents of the University of California * * Licensed under the * Educational Community License, Version 2.0 (the "License"); you may * not use this file except in compliance with the License. You may * obtain a copy of the License at * * http://www.osedu.org/licenses/ECL-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an "AS IS" * BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express * or implied. See the License for the specific language governing * permissions and limitations under the License. * **********************************************************************************/ import java.text.NumberFormat; public class Main { public static String formatDoubleAsPercentString(Double d) { if (d == null) return null; return NumberFormat.getPercentInstance().format(d); } }