diff --git a/src/share/classes/javax/management/NotificationBroadcasterSupport.java b/src/share/classes/javax/management/NotificationBroadcasterSupport.java index 33df960645021c5c4c012a824ec26e8f3d1d3a42..44f5a50647756fe35dea358aa4fbe1767b1b834c 100644 --- a/src/share/classes/javax/management/NotificationBroadcasterSupport.java +++ b/src/share/classes/javax/management/NotificationBroadcasterSupport.java @@ -249,6 +249,26 @@ public class NotificationBroadcasterSupport } } } + /** + * Returns true if there are any listeners. + * + * @return true if there is at least one listener that has been added with + * {@code addNotificationListener} and not subsequently removed with + * {@code removeNotificationListener} or {@code removeAllNotificationListeners}. + * @since 1.7 + */ + public boolean isListenedTo() { + return listenerList.size() > 0; + } + + /** + * Removes all listeners. + * + * @since 1.7 + */ + public void removeAllNotificationListeners() { + listenerList.clear(); + } /** *

This method is called by {@link #sendNotification diff --git a/test/javax/management/notification/SupportClearTest.java b/test/javax/management/notification/SupportClearTest.java new file mode 100644 index 0000000000000000000000000000000000000000..56712cf482b17aabab61f4e95b48120ffeb04837 --- /dev/null +++ b/test/javax/management/notification/SupportClearTest.java @@ -0,0 +1,80 @@ +/* + * Copyright 2005 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. + * + * 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. + */ + +/* + * @test + * @bug 6336980 + * @summary test 2 new methods: isListenedTo() and clear() + * @author Shanliang JIANG + * @run clean SupportClearTest + * @run build SupportClearTest + * @run main SupportClearTest + */ + +import javax.management.*; + +public class SupportClearTest { + private static boolean received = false; + + public static void main(String[] args) throws Exception { + System.out.println(">>> test 2 new methods: isListenedTo() and clear()."); + + final NotificationListener listener = new NotificationListener() { + public void handleNotification(Notification n, Object hb) { + received = true; + } + }; + + final NotificationBroadcasterSupport broadcaster = + new NotificationBroadcasterSupport(); + + System.out.println(">>> testing the method \"isListenedTo\"..."); + if (broadcaster.isListenedTo()) { + throw new RuntimeException( + "Bad implementation of the method \"isListenedTo\"!"); + } + + broadcaster.addNotificationListener(listener, null, null); + + if (!broadcaster.isListenedTo()) { + throw new RuntimeException( + "Bad implementation of the method \"isListenedTo\"!"); + } + + System.out.println(">>> testing the method \"clear\"..."); + broadcaster.removeAllNotificationListeners(); + if (broadcaster.isListenedTo()) { + throw new RuntimeException( + "Bad implementation of the method \"clear\"!"); + } + + broadcaster.sendNotification(new Notification("", "", 1L)); + + if (received) { + throw new RuntimeException( + "Bad implementation of the method \"clear\"!"); + } + + System.out.println(">>> PASSED!"); + } +}