Here you can find the source of camelToUnderlinedName(String name)
public static String camelToUnderlinedName(String name)
//package com.java2s; /*//from w ww . j a v a 2 s .c o m * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright 1997-2010 Oracle and/or its affiliates. All rights reserved. * * Oracle and Java are registered trademarks of Oracle and/or its affiliates. * Other names may be trademarks of their respective owners. * * The contents of this file are subject to the terms of either the GNU * General Public License Version 2 only ("GPL") or the Common * Development and Distribution License("CDDL") (collectively, the * "License"). You may not use this file except in compliance with the * License. You can obtain a copy of the License at * http://www.netbeans.org/cddl-gplv2.html * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the * specific language governing permissions and limitations under the * License. When distributing the software, include this License Header * Notice in each file and include the License file at * nbbuild/licenses/CDDL-GPL-2-CP. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the GPL Version 2 section of the License file that * accompanied this code. If applicable, add the following below the * License Header, with the fields enclosed by brackets [] replaced by * your own identifying information: * "Portions Copyrighted [year] [name of copyright owner]" * * Contributor(s): * * Portions Copyrighted 2008 Sun Microsystems, Inc. */ public class Main { public static String camelToUnderlinedName(String name) { // TODO - convert :: to / StringBuilder sb = new StringBuilder(); boolean lastWasUnderline = false; for (int i = 0; i < name.length(); i++) { char c = name.charAt(i); boolean isCaps = Character.isUpperCase(c); if (isCaps) { if (i > 0 && !lastWasUnderline) { sb.append('_'); lastWasUnderline = true; } c = Character.toLowerCase(c); } sb.append(c); lastWasUnderline = (c == '_'); } return sb.toString(); } }