Here you can find the source of getSubject()
public static Subject getSubject() throws NamingException
//package com.java2s; /**/*from w ww. j a v a 2 s .c o m*/ * OpenKM, Open Document Management System (http://www.openkm.com) * Copyright (c) 2006-2014 Paco Avila & Josep Llort * * No bytes were intentionally harmed during the development of this application. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ import javax.naming.InitialContext; import javax.naming.NamingException; import javax.security.auth.Subject; public class Main { /** * Obtain current authenticated subject */ public static Subject getSubject() throws NamingException { InitialContext ctx = new InitialContext(); return (Subject) ctx.lookup("java:comp/env/security/subject"); } }