Java tutorial
//package com.java2s; /******************************************************************************* * Copyright (c) 2011 Greg Riccardi, Guillaume Jimenez. * All rights reserved. This program and the accompanying materials * are made available under the terms of the GNU Public License v2.0 * which accompanies this distribution, and is available at * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html * * Contributors: * Greg Riccardi - initial API and implementation * Guillaume Jimenez - initial API and implementation ******************************************************************************/ import java.util.regex.Matcher; import java.util.regex.Pattern; public class Main { public static String removeDuplicateWhitespace(String inputStr) { String patternStr = "\\s+"; String replaceStr = " "; Pattern pattern = Pattern.compile(patternStr); Matcher matcher = pattern.matcher(inputStr); return matcher.replaceAll(replaceStr); } }