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diff --git a/libjava/classpath/javax/imageio/IIOParamController.java b/libjava/classpath/javax/imageio/IIOParamController.java
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+/* IIOParamController.java --
+   Copyright (C) 2004  Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath 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, or (at your option)
+any later version.
+
+GNU Classpath 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 GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package javax.imageio;
+
+/**
+ * An interface to set image parameters.  An IIOParamController may be
+ * a GUI component, a database reader, command-line parser or any
+ * other means of getting parameter settings.  For exampe, a dialog
+ * box could implement IIOParamController to allow a user to adjust
+ * JPEG compression levels.
+ *
+ * The activate method should always behave modally; it should only
+ * return when the action has been either cancelled or completed.
+ *
+ * @author Michael Koch (konqueror@gmx.de)
+ */
+public interface IIOParamController
+{
+  /**
+   * Activates the controller.  A return value of false should mean
+   * that no changes were made to param.  A return value of true
+   * should mean that the image is ready to be read or written.
+   *
+   * @param param the <code>IIOParam</code> to be modified
+   *
+   * @return true if the <code>IIOParam</code> has been modified,
+   * false otherwise
+   *
+   * @exception IllegalArgumentException if param is null or is not an instance
+   * of the correct class
+   */
+  boolean activate(IIOParam param);
+}