Here you can find the source of camelCaseToSpacedString(String camel)
public static String camelCaseToSpacedString(String camel)
//package com.java2s; /*/*from w w w.j ava2 s . c o m*/ * Copyright (c) 2013, SRI International * All rights reserved. * Licensed under the The BSD 3-Clause License; * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://opensource.org/licenses/BSD-3-Clause * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * Neither the name of the aic-util nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. */ public class Main { public static String camelCaseToSpacedString(String camel) { StringBuilder result = new StringBuilder(); int i = 0; while (i < camel.length()) { char c = camel.charAt(i); if (Character.isUpperCase(c) && i != 0) { result.append(' '); int initialUpperCaseLetterIndex = i; while (i < camel.length() && Character.isUpperCase(camel.charAt(i))) { // if this is upper case but next one is lower case, then // this is the first letter of a word, // so append space first. if (i > initialUpperCaseLetterIndex && i + 1 < camel.length() && Character.isLowerCase(camel.charAt(i + 1))) { result.append(' '); } result.append(Character.toLowerCase(camel.charAt(i))); i++; } } else { result.append(c); i++; } } return result.toString(); } }