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diff --git a/java/src/hdf/hdf5lib/callbacks/package-info.java b/java/src/hdf/hdf5lib/callbacks/package-info.java
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+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Copyright by The HDF Group.                                               *
+ *                                                                           *
+ * All rights reserved.                                                      *
+ *                                                                           *
+ * This file is part of HDF5.  The full HDF5 copyright notice, including     *
+ * terms governing use, modification, and redistribution, is contained in    *
+ * the COPYING file, which can be found at the root of the source code       *
+ * distribution tree, or in https://www.hdfgroup.org/licenses.               *
+ * If you do not have access to either file, you may request a copy from     *
+ * help@hdfgroup.org.                                                        *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+/** All callback definitions must derive from the Callbacks interface.  Any
+ * derived interfaces must define a single public method named "callback".
+ * You are responsible for deregistering your callback (if necessary)
+ * in its {@link Object#finalize} method.  If native code attempts to call
+ * a callback which has been GC'd, you will likely crash the VM.  If
+ * there is no method to deregister the callback (e.g. <code>atexit</code>
+ * in the C library), you must ensure that you always keep a live reference
+ * to the callback object.<p>
+ * A callback should generally never throw an exception, since it doesn't
+ * necessarily have an encompassing Java environment to catch it.  Any
+ * exceptions thrown will be passed to the default callback exception
+ * handler.
+ */
+package hdf.hdf5lib.callbacks;