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IndexedPropertyChangeEvent (Java Platform SE 6) - JDK 5 Documentation v6.0, Java 2 SDK 英文文档

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java.beans
Class IndexedPropertyChangeEvent

java.lang.Object
  java.util.EventObject
      java.beans.PropertyChangeEvent
          java.beans.IndexedPropertyChangeEvent

All Implemented Interfaces:

Serializable

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public class IndexedPropertyChangeEvent
extends PropertyChangeEvent

An "IndexedPropertyChange" event gets delivered whenever a component that conforms to the JavaBeans specification (a "bean") changes a bound indexed property. This class is an extension of PropertyChangeEvent but contains the index of the property that has changed.

Null values may be provided for the old and the new values if their true values are not known.

An event source may send a null object as the name to indicate that an arbitrary set of if its properties have changed. In this case the old and new values should also be null.

Since:

1.5

See Also:

Serialized Form

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Field Summary

 

Fields inherited from class java.util.EventObject
source

 

Constructor Summary
IndexedPropertyChangeEvent(Object source, String propertyName, Object oldValue, Object newValue, int index)           Constructs a new IndexedPropertyChangeEvent object.

 

Method Summary
int	getIndex()           Gets the index of the property that was changed.

 

Methods inherited from class java.beans.PropertyChangeEvent
getNewValue, getOldValue, getPropagationId, getPropertyName, setPropagationId

 

Methods inherited from class java.util.EventObject
getSource, toString

 

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

 

Constructor Detail

IndexedPropertyChangeEvent

public IndexedPropertyChangeEvent(Object source,
                                  String propertyName,
                                  Object oldValue,
                                  Object newValue,
                                  int index)

Constructs a new IndexedPropertyChangeEvent object.

Parameters:

source - The bean that fired the event.

propertyName - The programmatic name of the property that was changed.

oldValue - The old value of the property.

newValue - The new value of the property.

index - index of the property element that was changed.

Method Detail

getIndex

public int getIndex()

Gets the index of the property that was changed.

Returns:

The index specifying the property element that was changed.

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

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