VetoableChangeListener (Java 2 Platform SE v1.4.2) - Java 2 SDK v1.4.2, Java 2 SDK 英文文档

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Java^TM 2 Platform
Std. Ed. v1.4.2

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java.beans
Interface VetoableChangeListener

All Superinterfaces:: EventListener

All Known Implementing Classes:: 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

void vetoableChange(PropertyChangeEvent evt)
This method gets called when a constrained property is changed.

Method Detail

vetoableChange

public void vetoableChange(PropertyChangeEvent evt)
                    throws PropertyVetoException

This method gets called when a constrained property is changed.

Parameters:: evt - a PropertyChangeEvent object describing the event source and the property that has changed.
Throws:: PropertyVetoException - if the recipient wishes the property change to be rolled back.