VetoableChangeListener

java.beans

Interface VetoableChangeListener

All Superinterfaces:

EventListener

All Known Implementing Classes:

BeanContextServicesSupport, 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

All Methods

Instance Methods

Abstract Methods
Modifier and Type	Method and Description
`void`	`vetoableChange(PropertyChangeEvent evt)` This method gets called when a constrained property is changed.

- Method Detail
  - vetoableChange
```
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.