!7

import javax.management.*;
import javax.management.openmbean.CompositeData;
import com.sun.management.GarbageCollectionNotificationInfo;

p {
  wordWrapConsole();
  NotificationListener listener = new NotificationListener {
    @Override
    public void handleNotification(Notification notification, O handback) {
      print("type: " + notification.getType());
      if (notification.getType().equals(GarbageCollectionNotificationInfo.GARBAGE_COLLECTION_NOTIFICATION)) {
        // extract garbage collection information from notification.
        GarbageCollectionNotificationInfo gcInfo = GarbageCollectionNotificationInfo.from((CompositeData) notification.getUserData());
        //print("Cause: " + gcInfo.getGcCause();
        pnlStruct(callAllMethodsInInterface(gcInfo, GarbageCollectionNotificationInfo.class);
        print();
      }
    }
  };

  // register our listener with all gc beans
  for (GarbageCollectorMXBean gcBean : ManagementFactory.getGarbageCollectorMXBeans())
    ((NotificationEmitter) gcBean).addNotificationListener(listener, null, null);
}

Began life as a copy of #1013393