--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/vmTestbase/nsk/jvmti/AttachOnDemand/attach024/java.base/java/util/TooManyListenersException.java	Thu Jun 28 19:33:00 2018 -0700
@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 1996, 2008, 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.util;
+
+import nsk.jvmti.AttachOnDemand.attach024.*;
+
+/**
+ * <p>
+ * The <code> TooManyListenersException </code> Exception is used as part of
+ * the Java Event model to annotate and implement a unicast special case of
+ * a multicast Event Source.
+ * </p>
+ * <p>
+ * The presence of a "throws TooManyListenersException" clause on any given
+ * concrete implementation of the normally multicast "void addXyzEventListener"
+ * event listener registration pattern is used to annotate that interface as
+ * implementing a unicast Listener special case, that is, that one and only
+ * one Listener may be registered on the particular event listener source
+ * concurrently.
+ * </p>
+ *
+ * @see java.util.EventObject
+ * @see java.util.EventListener
+ *
+ * @author Laurence P. G. Cable
+ * @since  1.1
+ */
+
+public class TooManyListenersException extends Exception {
+    private static final long serialVersionUID = 5074640544770687831L;
+
+    /**
+     * Constructs a TooManyListenersException with no detail message.
+     * A detail message is a String that describes this particular exception.
+     */
+
+    public TooManyListenersException() {
+        super();
+    }
+
+    /**
+     * Constructs a TooManyListenersException with the specified detail message.
+     * A detail message is a String that describes this particular exception.
+     * @param s the detail message
+     */
+
+    public TooManyListenersException(String s) {
+        super(s);
+    }
+
+    public String toString() {
+        return attach024Agent00.MODIFIED_TO_STRING;
+    }
+}