diff -r 4ebc2e2fb97c -r 71c04702a3d5 src/java.rmi/share/classes/java/rmi/UnexpectedException.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.rmi/share/classes/java/rmi/UnexpectedException.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 1996, 1998, 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 java.rmi;
+
+/**
+ * An <code>UnexpectedException</code> is thrown if the client of a
+ * remote method call receives, as a result of the call, a checked
+ * exception that is not among the checked exception types declared in the
+ * <code>throws</code> clause of the method in the remote interface.
+ *
+ * @author  Roger Riggs
+ * @since   1.1
+ */
+public class UnexpectedException extends RemoteException {
+
+    /* indicate compatibility with JDK 1.1.x version of class */
+    private static final long serialVersionUID = 1800467484195073863L;
+
+    /**
+     * Constructs an <code>UnexpectedException</code> with the specified
+     * detail message.
+     *
+     * @param s the detail message
+     * @since 1.1
+     */
+    public UnexpectedException(String s) {
+        super(s);
+    }
+
+    /**
+     * Constructs a <code>UnexpectedException</code> with the specified
+     * detail message and nested exception.
+     *
+     * @param s the detail message
+     * @param ex the nested exception
+     * @since 1.1
+     */
+    public UnexpectedException(String s, Exception ex) {
+        super(s, ex);
+    }
+}