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diff --git a/libjava/classpath/java/lang/Readable.java b/libjava/classpath/java/lang/Readable.java
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+/* Readable.java -- A character source
+   Copyright (C) 2004, 2005 Free Software Foundation
+
+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 java.lang;
+
+import java.io.IOException;
+import java.nio.CharBuffer;
+
+/**
+ * A <code>Readable</code> object is simply a source for Unicode character
+ * data.  On request, a <code>Readable</code> will provide its data in
+ * a supplied <code>CharBuffer</code>.
+ *
+ * @author Tom Tromey <tromey@redhat.com>
+ * @author Andrew John Hughes <gnu_andrew@member.fsf.org>
+ * @since 1.5
+ */
+public interface Readable
+{
+
+  /**
+   * Adds the character data supplied by this <code>Readable</code>
+   * to the specified character buffer.  This method simply places
+   * each character into the buffer as supplied, using <code>put()</code>,
+   * without flipping or rewinding.
+   *
+   * @param buf the buffer to place the character data in.
+   * @return the number of <code>char</code> values placed in the buffer,
+   *         or -1 if no more characters are available.
+   * @throws IOException if an I/O error occurs.
+   * @throws NullPointerException if buf is null.
+   * @throws ReadOnlyBufferException if buf is read only.
+   */
+  int read(CharBuffer buf)
+    throws IOException;
+
+}