Here you can find the source of booleanValue(String s)
public static boolean booleanValue(String s)
//package com.java2s; /*/*from w ww.java2s.c o m*/ * Copyright 2006-2015 WebPKI.org (http://webpki.org). * * 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 boolean booleanValue(String s) { if (s.equals("true") || s.equals("1")) { return true; } else if (s.equals("false") || s.equals("0")) { return false; } else { throw new IllegalArgumentException("Not an XML boolean: " + s); } } }