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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.

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

Copyright 2002 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.