Here you can find the source of toBoolean(String s)
public static boolean toBoolean(String s)
//package com.java2s; /*//w ww .j a v a 2s .c om * Copyright (c) 2000-2003 Netspective Communications LLC. All rights reserved. * * Netspective Communications LLC ("Netspective") permits redistribution, modification and use of this file in source * and binary form ("The Software") under the Netspective Source License ("NSL" or "The License"). The following * conditions are provided as a summary of the NSL but the NSL remains the canonical license and must be accepted * before using The Software. Any use of The Software indicates agreement with the NSL. * * 1. Each copy or derived work of The Software must preserve the copyright notice and this notice unmodified. * * 2. Redistribution of The Software is allowed in object code form only (as Java .class files or a .jar file * containing the .class files) and only as part of an application that uses The Software as part of its primary * functionality. No distribution of the package is allowed as part of a software development kit, other library, * or development tool without written consent of Netspective. Any modified form of The Software is bound by these * same restrictions. * * 3. Redistributions of The Software in any form must include an unmodified copy of The License, normally in a plain * ASCII text file unless otherwise agreed to, in writing, by Netspective. * * 4. The names "Netspective", "Axiom", "Commons", "Junxion", and "Sparx" are trademarks of Netspective and may not be * used to endorse products derived from The Software without without written consent of Netspective. "Netspective", * "Axiom", "Commons", "Junxion", and "Sparx" may not appear in the names of products derived from The Software * without written consent of Netspective. * * 5. Please attribute functionality where possible. We suggest using the "powered by Netspective" button or creating * a "powered by Netspective(tm)" link to http://www.netspective.com for each application using The Software. * * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT A WARRANTY OF ANY KIND. ALL EXPRESS OR IMPLIED REPRESENTATIONS AND * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, * ARE HEREBY DISCLAIMED. * * NETSPECTIVE AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE OR ANY THIRD PARTY AS A * RESULT OF USING OR DISTRIBUTING THE SOFTWARE. IN NO EVENT WILL NETSPECTIVE OR ITS LICENSORS BE LIABLE FOR ANY LOST * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THE SOFTWARE, EVEN * IF HE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. * * @author Shahid N. Shah */ public class Main { /** * returns the boolean equivalent of a string, which is considered true * if either "on", "true", or "yes" is found, ignoring case. */ public static boolean toBoolean(String s) { return (s.equalsIgnoreCase("yes") || s.equalsIgnoreCase("true") || s.equalsIgnoreCase("on") || s.equalsIgnoreCase("1")); } }