--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.base/share/classes/java/util/EventObject.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 1996, 2003, 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;
+
+/**
+ * <p>
+ * The root class from which all event state objects shall be derived.
+ * <p>
+ * All Events are constructed with a reference to the object, the "source",
+ * that is logically deemed to be the object upon which the Event in question
+ * initially occurred upon.
+ *
+ * @since 1.1
+ */
+
+public class EventObject implements java.io.Serializable {
+
+    private static final long serialVersionUID = 5516075349620653480L;
+
+    /**
+     * The object on which the Event initially occurred.
+     */
+    protected transient Object  source;
+
+    /**
+     * Constructs a prototypical Event.
+     *
+     * @param    source    The object on which the Event initially occurred.
+     * @exception  IllegalArgumentException  if source is null.
+     */
+    public EventObject(Object source) {
+        if (source == null)
+            throw new IllegalArgumentException("null source");
+
+        this.source = source;
+    }
+
+    /**
+     * The object on which the Event initially occurred.
+     *
+     * @return   The object on which the Event initially occurred.
+     */
+    public Object getSource() {
+        return source;
+    }
+
+    /**
+     * Returns a String representation of this EventObject.
+     *
+     * @return  A a String representation of this EventObject.
+     */
+    public String toString() {
+        return getClass().getName() + "[source=" + source + "]";
+    }
+}