VetoableChangeListener (Java Platform SE 8 )

All Superinterfaces:

EventListener

所有已知实现类：

BeanContextServicesSupport ， BeanContextSupport ， VetoableChangeListenerProxy
```
public interface VetoableChangeListener
extends EventListener
```
当一个bean更改“constrained”属性时，VetoableChange事件就被触发。您可以向源bean注册一个VetoableChangeListener，以便通知任何受限的属性更新。

方法摘要

所有方法接口方法抽象方法
Modifier and Type	Method and Description
`void`	`vetoableChange(PropertyChangeEvent evt)` 当更改约束属性时调用此方法。

- 方法详细信息
  - vetoableChange
```
void vetoableChange(PropertyChangeEvent evt)
             throws PropertyVetoException
```
    当更改约束属性时调用此方法。
    
    参数
    
    evt - 一个 PropertyChangeEvent事件源和已更改属性的对象PropertyChangeEvent。
    
    异常
    
    PropertyVetoException - if the recipient wishes the property change to be rolled back.

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Interface VetoableChangeListener

方法摘要

方法详细信息

vetoableChange