Here you can find the source of capitalizeFirst(String string)
public static String capitalizeFirst(String string)
//package com.java2s; /*/*from w w w .ja v a 2 s . c o m*/ * Copyright 2013 Cloud4SOA, www.cloud4soa.eu * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ public class Main { public static String capitalizeFirst(String string) { String capitalized = string; if (string != null && !string.isEmpty()) { if (string.length() == 1) { return capitalized.toUpperCase(); } else { String stringA = string.substring(0, 1); String stringZ = string.substring(1, string.length()); capitalized = stringA.toUpperCase() + stringZ; } } return capitalized; } }