Here you can find the source of replaceWhitespace(String searchTerm)
public static String replaceWhitespace(String searchTerm)
//package com.java2s; /*//from w ww . j a v a2 s. c om * #%L * Cytoscape Search Impl (search-impl) * $Id:$ * $HeadURL:$ * %% * Copyright (C) 2006 - 2013 The Cytoscape Consortium * %% * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation, either version 2.1 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 Lesser Public License for more details. * * You should have received a copy of the GNU General Lesser Public * License along with this program. If not, see * <http://www.gnu.org/licenses/lgpl-2.1.html>. * #L% */ import java.util.regex.Pattern; public class Main { public static final String SEARCH_STRING = "\\s"; public static final String REPLACE_STRING = "_"; /** * Replaces whitespace characters with underline. Method: Search for * SEARCH_STRING, replace with REPLACE_STRING. */ public static String replaceWhitespace(String searchTerm) { String replaceTerm = ""; if (searchTerm == null) { return replaceTerm; } Pattern searchPattern = Pattern.compile(SEARCH_STRING); String[] result = searchPattern.split(searchTerm); replaceTerm = result[0]; for (int i = 1; i < result.length; i++) { replaceTerm = replaceTerm + REPLACE_STRING + result[i]; } return replaceTerm; } }