Here you can find the source of capitalizeFirst(String toCap)
private static String capitalizeFirst(String toCap)
//package com.java2s; /*// w w w . j av a 2 s.c om * ****************************************************************************** * MontiCore Language Workbench * Copyright (c) 2016, MontiCore, All rights reserved. * * This project 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 3.0 of the License, or (at your option) any later version. * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this project. If not, see <http://www.gnu.org/licenses/>. * ****************************************************************************** */ public class Main { private static String capitalizeFirst(String toCap) { String ret = ""; if (null != toCap && toCap.length() > 0) { char first = toCap.charAt(0); first = Character.toUpperCase(first); ret += first; } if (toCap.length() > 1) { ret += toCap.substring(1); } return ret; } }