Here you can find the source of capitalizeFirstChar(final String str)
public static String capitalizeFirstChar(final String str)
//package com.java2s; /*/*from w ww. ja va 2s. c o m*/ * Copyright 2010-2015 Amazon.com, Inc. or its affiliates. All Rights Reserved. * * Licensed under the Apache License, Version 2.0 (the "License"). * You may not use this file except in compliance with the License. * A copy of the License is located at * * http://aws.amazon.com/apache2.0 * * or in the "license" file accompanying this file. This file 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 capitalizeFirstChar(final String str) { if (str.length() > 1) { return str.substring(0, 1).toUpperCase() + str.substring(1); } else { return str.toUpperCase(); } } }