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p62xrbca7/java/beans/VetoableChangeListener.java

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/*
* Copyright (c) 1996, 1997, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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package java.beans;
/**
* 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.
*/
public interface VetoableChangeListener extends java.util.EventListener {
/**
* This method gets called when a constrained property is changed.
*
* @param evt a <code>PropertyChangeEvent</code> object describing the
* event source and the property that has changed.
* @exception PropertyVetoException if the recipient wishes the property
* change to be rolled back.
*/
void vetoableChange(PropertyChangeEvent evt)
throws PropertyVetoException;
}