java.beans

Interface VetoableChangeListener

All Superinterfaces:

EventListener

All Known Implementing Classes:

BeanContextServicesSupport, BeanContextSupport, VetoableChangeListenerProxy

public interface VetoableChangeListener
extends EventListener

A VetoableChange event gets fired whenever a bean changes a "constrained" property. You can register a VetoableChangeListener with a source bean so as to be notified of any constrained property updates.

Method Summary

Modifier and Type	Method and Description
void	vetoableChange(PropertyChangeEvent evt) This method gets called when a constrained property is changed.

Method Detail

vetoableChange

void vetoableChange(PropertyChangeEvent evt)
             throws PropertyVetoException

This method gets called when a constrained property is changed.

Throws:

PropertyVetoException - if the recipient wishes the property change to be rolled back.

Parameters:

evt - a PropertyChangeEvent object describing the event source and the property that has changed.