diff -r fd16c54261b3 -r 90ce3da70b43 jdk/src/share/classes/com/sun/jdi/InterfaceType.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/com/sun/jdi/InterfaceType.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,81 @@
+/*
+ * Copyright 1998-2004 Sun Microsystems, Inc.  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.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package com.sun.jdi;
+
+import java.util.List;
+
+/**
+ * A mirror of an interface in the target VM. An InterfaceType is
+ * a refinement of {@link ReferenceType} that applies to true interfaces
+ * in the JLS  sense of the definition (not a class, not an array type).
+ * An interface type will never be returned by
+ * {@link ObjectReference#referenceType}, but it may be in the list
+ * of implemented interfaces for a {@link ClassType} that is returned
+ * by that method.
+ *
+ * @see ObjectReference
+ *
+ * @author Robert Field
+ * @author Gordon Hirsch
+ * @author James McIlree
+ * @since  1.3
+ */
+public interface InterfaceType extends ReferenceType {
+    /**
+     * Gets the interfaces directly extended by this interface.
+     * The returned list contains only those interfaces this
+     * interface has declared to be extended.
+     *
+     * @return a List of {@link InterfaceType} objects each mirroring
+     * an interface extended by this interface.
+     * If none exist, returns a zero length List.
+     * @throws ClassNotPreparedException if this class not yet been
+     * prepared.
+     */
+    List<InterfaceType> superinterfaces();
+
+    /**
+     * Gets the currently prepared interfaces which directly extend this
+     * interface. The returned list contains only those interfaces that
+     * declared this interface in their "extends" clause.
+     *
+     * @return a List of {@link InterfaceType} objects each mirroring
+     * an interface extending this interface.
+     * If none exist, returns a zero length List.
+     */
+    List<InterfaceType> subinterfaces();
+
+    /**
+     * Gets the currently prepared classes which directly implement this
+     * interface. The returned list contains only those classes that
+     * declared this interface in their "implements" clause.
+     *
+     * @return a List of {@link ClassType} objects each mirroring
+     * a class implementing this interface.
+     * If none exist, returns a zero length List.
+     */
+    List<ClassType> implementors();
+}