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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.

Since:1.1
/**
 * 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.
 * @since 1.1
 */
public interface VetoableChangeListener extends java.util.EventListener {
    
This method gets called when a constrained property is changed.

Params:
  • evt – a PropertyChangeEvent object describing the event source and the property that has changed.
Throws:
/**
     * This method gets called when a constrained property is changed.
     *
     * @param     evt a {@code PropertyChangeEvent} 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;
}