Java example source code file (ClassLoaderWithRepository.java)

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Java - Java tags/keywords

classloader, classloaderrepository, classloaderwithrepository, classnotfoundexception, illegalargumentexception, null

The ClassLoaderWithRepository.java Java example source code

/*
 * Copyright (c) 2003, 2008, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package com.sun.jmx.remote.util;

import javax.management.loading.ClassLoaderRepository;

public class ClassLoaderWithRepository extends ClassLoader {
    public ClassLoaderWithRepository(ClassLoaderRepository clr,
                                     ClassLoader cl2) {

        if (clr == null) throw new
            IllegalArgumentException("Null ClassLoaderRepository object.");

        repository = clr;
        this.cl2 = cl2;
   }

    protected Class<?> findClass(String name) throws ClassNotFoundException {
        try {
            return repository.loadClass(name);
        } catch (ClassNotFoundException cne) {
            if (cl2 != null) {
                return cl2.loadClass(name);
            } else {
                throw cne;
            }
        }
    }

    private ClassLoaderRepository repository;
    private ClassLoader cl2;
}