Java tutorial
//package com.java2s; public class Main { public static String upperFirstLetter(String string) { if (isEmpty(string) || !Character.isLowerCase(string.charAt(0))) { return string; } return String.valueOf((char) (string.charAt(0) - 32)) + string.substring(1); } public static boolean isEmpty(CharSequence string) { return string == null || string.length() == 0; } public static int length(CharSequence string) { return string == null ? 0 : string.length(); } }