NotificationListenerTests.java 文件源码

@Override
public void handleNotification(Notification notification, Object handback) {
    if (notification instanceof AttributeChangeNotification) {
        AttributeChangeNotification attNotification = (AttributeChangeNotification) notification;
        String attributeName = attNotification.getAttributeName();

        Integer currentCount = (Integer) this.attributeCounts.get(attributeName);

        if (currentCount != null) {
            int count = currentCount.intValue() + 1;
            this.attributeCounts.put(attributeName, new Integer(count));
        } else {
            this.attributeCounts.put(attributeName, new Integer(1));
        }

        this.attributeHandbacks.put(attributeName, handback);
    }
}