Here you can find the source of capitalizeString(final String in)
public static final String capitalizeString(final String in)
//package com.java2s; /*//from w w w. j a va 2 s . co m * This program is free software: you can redistribute it and/or modify it under * the terms of the GNU General Public License as published by the Free Software * Foundation, either version 3 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 Public License for more * details. * * You should have received a copy of the GNU General Public License along with * this program. If not, see <http://www.gnu.org/licenses/>. */ public class Main { public static final String capitalizeString(final String in) { if (in.isEmpty()) return in; final StringBuilder sb = new StringBuilder(in.length()); sb.append(Character.toUpperCase(in.charAt(0))); for (int i = 1; i < in.length(); i++) { sb.append(Character.toLowerCase(in.charAt(i))); } return sb.toString(); } }