/* * Copyright (c) 2000, 2004, 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 javax.imageio.spi; /** * An optional interface that may be provided by service provider * objects that will be registered with a * <code>ServiceRegistry</code>.  If this interface is present, * notification of registration and deregistration will be performed. * * @see ServiceRegistry * */public interface RegisterableService {     /**     * Called when an object implementing this interface is added to     * the given <code>category</code> of the given     * <code>registry</code>.  The object may already be registered     * under another category or categories.     *     * @param registry a <code>ServiceRegistry</code> where this     * object has been registered.     * @param category a <code>Class</code> object indicating the     * registry category under which this object has been registered.     */    void onRegistration(ServiceRegistry registry, Class<?> category);     /**     * Called when an object implementing this interface is removed     * from the given <code>category</code> of the given     * <code>registry</code>.  The object may still be registered     * under another category or categories.     *     * @param registry a <code>ServiceRegistry</code> from which this     * object is being (wholly or partially) deregistered.     * @param category a <code>Class</code> object indicating the     * registry category from which this object is being deregistered.     */    void onDeregistration(ServiceRegistry registry, Class<?> category);}