Here you can find the source of toLowerCase(String name)
public static String toLowerCase(String name)
//package com.java2s; /* /*from w ww. j av a 2s .co m*/ * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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 { /** * This method minusculizes all characters in the provided string. * @return resulted string */ public static String toLowerCase(String name) { int len = name.length(); StringBuffer sb = new StringBuffer(len); for (int i = 0; i < len; i++) { char c = name.charAt(i); sb.append(Character.toLowerCase(c)); } return sb.toString(); } }