Here you can find the source of decapitalizePropertyName(String propertyName)
private static String decapitalizePropertyName(String propertyName)
//package com.java2s; /*//from w w w . j a v a 2s.c o m * Copied from the Hibernate Validator project * Original authors: Hardy Ferentschik, Gunnar Morling and Kevin Pollet. * * 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 { private static String decapitalizePropertyName(String propertyName) { if (propertyName.isEmpty() || startsWithSeveralUpperCaseLetters(propertyName)) { return propertyName; } else { return propertyName.substring(0, 1).toLowerCase() + propertyName.substring(1); } } private static boolean startsWithSeveralUpperCaseLetters(String propertyName) { return propertyName.length() > 1 && Character.isUpperCase(propertyName.charAt(0)) && Character.isUpperCase(propertyName.charAt(1)); } }