Interface java.beans.VetoableChangeListener - JDK 5 Documentation v1.1.8, Java 2 SDK 英文文档

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Interface java.beans.VetoableChangeListener

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.

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

vetoableChange

 public abstract 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.

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