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  Class java.beans.VetoableChangeSupport
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<pre>
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<h1>
  Class java.beans.VetoableChangeSupport
</h1>
<pre>
<a href="java.lang.Object.html#_top_">java.lang.Object</a>
   |
   +----java.beans.VetoableChangeSupport
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<dl>
  <dt> public class <b>VetoableChangeSupport</b>
  <dt> extends <a href="java.lang.Object.html#_top_">Object</a>
  <dt> implements <a href="java.io.Serializable.html#_top_">Serializable</a>
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This is a utility class that can be used by beans that support constrained
 properties.  You can use an instance of this class as a member field
 of your bean and delegate various work to it.
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  <img src="images/constructor-index.gif" width=275 height=38 alt="Constructor Index">
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  <dt> <img src="images/yellow-ball-small.gif" width=6 height=6 alt=" o ">
	<a href="#VetoableChangeSupport(java.lang.Object)"><b>VetoableChangeSupport</b></a>(Object)
  <dd>  
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  <img src="images/method-index.gif" width=207 height=38 alt="Method Index">
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  <dt> <img src="images/red-ball-small.gif" width=6 height=6 alt=" o ">
	<a href="#addVetoableChangeListener(java.beans.VetoableChangeListener)"><b>addVetoableChangeListener</b></a>(VetoableChangeListener)
  <dd>  Add a VetoableListener to the listener list.
  <dt> <img src="images/red-ball-small.gif" width=6 height=6 alt=" o ">
	<a href="#fireVetoableChange(java.lang.String, java.lang.Object, java.lang.Object)"><b>fireVetoableChange</b></a>(String, Object, Object)
  <dd>  Report a vetoable property update to any registered listeners.
  <dt> <img src="images/red-ball-small.gif" width=6 height=6 alt=" o ">
	<a href="#removeVetoableChangeListener(java.beans.VetoableChangeListener)"><b>removeVetoableChangeListener</b></a>(VetoableChangeListener)
  <dd>  Remove a VetoableChangeListener from the listener list.
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<a name="constructors"></a>
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  <img src="images/constructors.gif" width=231 height=38 alt="Constructors">
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<a name="VetoableChangeSupport"></a>
<a name="VetoableChangeSupport(java.lang.Object)"><img src="images/yellow-ball.gif" width=12 height=12 alt=" o "></a>
<b>VetoableChangeSupport</b>
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 public VetoableChangeSupport(<a href="java.lang.Object.html#_top_">Object</a> sourceBean)
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  <img src="images/methods.gif" width=151 height=38 alt="Methods">
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<a name="addVetoableChangeListener(java.beans.VetoableChangeListener)"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="addVetoableChangeListener"><b>addVetoableChangeListener</b></a>
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 public synchronized void addVetoableChangeListener(<a href="java.beans.VetoableChangeListener.html#_top_">VetoableChangeListener</a> listener)
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<dl>
  <dd> Add a VetoableListener to the listener list.
<p>
  <dd><dl>
    <dt> <b>Parameters:</b>
    <dd> listener - The VetoableChangeListener to be added
  </dl></dd>
</dl>
<a name="removeVetoableChangeListener(java.beans.VetoableChangeListener)"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="removeVetoableChangeListener"><b>removeVetoableChangeListener</b></a>
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 public synchronized void removeVetoableChangeListener(<a href="java.beans.VetoableChangeListener.html#_top_">VetoableChangeListener</a> listener)
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  <dd> Remove a VetoableChangeListener from the listener list.
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  <dd><dl>
    <dt> <b>Parameters:</b>
    <dd> listener - The VetoableChangeListener to be removed
  </dl></dd>
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<a name="fireVetoableChange(java.lang.String, java.lang.Object, java.lang.Object)"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a>
<a name="fireVetoableChange"><b>fireVetoableChange</b></a>
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 public void fireVetoableChange(<a href="java.lang.String.html#_top_">String</a> propertyName,
                                <a href="java.lang.Object.html#_top_">Object</a> oldValue,
                                <a href="java.lang.Object.html#_top_">Object</a> newValue) throws <a href="java.beans.PropertyVetoException.html#_top_">PropertyVetoException</a>
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<dl>
  <dd> Report a vetoable property update to any registered listeners.  If
 anyone vetos the change, then fire a new event reverting everyone to 
 the old value and then rethrow the PropertyVetoException.
 <p>
 No event is fired if old and new are equal and non-null.
<p>
  <dd><dl>
    <dt> <b>Parameters:</b>
    <dd> propertyName - The programmatic name of the property
		that was changed.
    <dd> oldValue - The old value of the property.
    <dd> newValue - The new value of the property.
    <dt> <b>Throws:</b> <a href="java.beans.PropertyVetoException.html#_top_">PropertyVetoException</a>
    <dd> if the recipient wishes the property
              change to be rolled back.
  </dl></dd>
</dl>
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