This bug is filed to track an issue brought up in bugs 4937059 and 4937062. The issue is with PropertyChangeListeners for named properties. Methods which take a property name should specify what happens when a null String is passed in. Such methods are:

addPropertyChangeListener(String propertyName,
                          PropertyChangeListener listener)

removePropertyChangeListener(String propertyName,
                             PropertyChangeListener listener)

getPropertyChangeListeners(String propertyName)

hasListeners(String propertyName)

This applies to the following classes:

java.beans.PropertyChangeSupport
java.beans.VetoableChangeSupport
java.beans.beancontext.BeanContextChildSupport