--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/java.desktop/share/classes/java/awt/desktop/UserSessionEvent.java	Thu Mar 24 02:22:01 2016 +0300
@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2016, 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.awt.desktop;
+
+/**
+ * Event sent when the user session has been changed.
+ *
+ * Some systems may provide a reason of a user session change.
+ *
+ * @see UserSessionListener#userSessionActivated(AppEvent.UserSessionEvent)
+ * @see UserSessionListener#userSessionDeactivated(AppEvent.UserSessionEvent)
+ *
+ * @since 9
+ */
+public final class UserSessionEvent extends AppEvent {
+
+    private static final long serialVersionUID = 6747138462796569055L;
+
+    private final Reason reason;
+
+    /**
+     * Kinds of available reasons of user session change.
+     */
+    public static enum Reason {
+        /**
+         * The system does not provide a reason for a session change.
+         */
+        UNSPECIFIED,
+
+        /**
+         * The session was connected/disconnected to the console terminal.
+         */
+        CONSOLE,
+
+        /**
+         * The session was connected/disconnected to the remote terminal.
+         */
+        REMOTE,
+
+        /**
+         * The session has been locked/unlocked.
+         */
+        LOCK
+    }
+
+    /**
+     * Constructs a {@code UserSessionEvent}
+     *
+     * @param reason of session change
+     */
+    public UserSessionEvent(Reason reason) {
+        this.reason = reason;
+    }
+
+    /**
+     * Gets a reason of the user session change.
+     *
+     * @return reason a reason
+     * @see Reason#UNSPECIFIED
+     * @see Reason#CONSOLE
+     * @see Reason#REMOTE
+     * @see Reason#LOCK
+     */
+    public Reason getReason() {
+        return reason;
+    }
+}