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* JBoss, Home of Professional Open Source
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* Copyright 2005, JBoss Inc., and individual contributors as indicated
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* by the @authors tag. See the copyright.txt in the distribution for a
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* full listing of individual contributors.
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* This is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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* You should have received a copy of the GNU Lesser General Public
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* License along with this software; if not, write to the Free
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* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
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package org.jboss.remoting.serialization;
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import java.security.AccessController;
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import java.security.PrivilegedAction;
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* @author <a href="mailto:clebert.suconic@jboss.com">Clebert Suconic</a>
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public class ClassLoaderUtility
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* Tries to load the class from the current thread's context class loader. If
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* not successful, tries to load the class from the current instance.
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* @param classname Desired class.
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* @param clazz Class object used to obtain a class loader
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* if no context class loader is available.
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* @return Class, or null on failure.
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public static Class loadClass(String classname, final Class clazz) throws ClassNotFoundException
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loader = (ClassLoader) AccessController.doPrivileged( new PrivilegedAction()
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return Thread.currentThread().getContextClassLoader();
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return Class.forName(classname, false, loader);
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loader = (ClassLoader) AccessController.doPrivileged( new PrivilegedAction()
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return clazz.getClassLoader();
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return Class.forName(classname, false, loader);
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loader = (ClassLoader) AccessController.doPrivileged( new PrivilegedAction()
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return ClassLoader.getSystemClassLoader();
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return Class.forName(classname, false, loader);
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throw new ClassNotFoundException(classname);
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* Tries to load the class from the passed class' classloader, then current thread's context class loader.
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* @param clazz Class object used to obtain a class loader
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* if no context class loader is available.
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* @param classname Desired class.
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* @return Class, or null on failure.
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public static Class loadClass(final Class clazz, String classname) throws ClassNotFoundException
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loader = (ClassLoader) AccessController.doPrivileged( new PrivilegedAction()
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return clazz.getClassLoader();
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return Class.forName(classname, false, loader);
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loader = (ClassLoader) AccessController.doPrivileged( new PrivilegedAction()
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return Thread.currentThread().getContextClassLoader();
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return Class.forName(classname, false, loader);
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loader = (ClassLoader) AccessController.doPrivileged( new PrivilegedAction()
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return ClassLoader.getSystemClassLoader();
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return Class.forName(classname, false, loader);
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throw new ClassNotFoundException(classname);