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JavaTM 2 Platform Std. Ed. v1.4.2

java.util.prefs
Class PreferenceChangeEvent

java.lang.Object
  extended byjava.util.EventObject
      extended byjava.util.prefs.PreferenceChangeEvent
All Implemented Interfaces:
Serializable

public class PreferenceChangeEvent
extends EventObject

An event emitted by a Preferences node to indicate that a preference has been added, removed or has had its value changed.

Note, that although PreferenceChangeEvent inherits Serializable interface from EventObject, it is not intended to be Serializable. Appropriate serialization methods are implemented to throw NotSerializableException.

Since:
1.4
See Also:
Preferences, PreferenceChangeListener, NodeChangeEvent

Field Summary
 
Fields inherited from class java.util.EventObject
source
 
Constructor Summary
PreferenceChangeEvent(Preferences node, String key, String newValue)
          Constructs a new PreferenceChangeEvent instance.
 
Method Summary
 String getKey()
          Returns the key of the preference that was changed.
 String getNewValue()
          Returns the new value for the preference.
 Preferences getNode()
          Returns the preference node that emitted the event.
 
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

PreferenceChangeEvent

public PreferenceChangeEvent(Preferences node,
                             String key,
                             String newValue)
Constructs a new PreferenceChangeEvent instance.

Parameters:
node - The Preferences node that emitted the event.
key - The key of the preference that was changed.
newValue - The new value of the preference, or null if the preference is being removed.
Method Detail

getNode

public Preferences getNode()
Returns the preference node that emitted the event.

Returns:
The preference node that emitted the event.

getKey

public String getKey()
Returns the key of the preference that was changed.

Returns:
The key of the preference that was changed.

getNewValue

public String getNewValue()
Returns the new value for the preference.

Returns:
The new value for the preference, or null if the preference was removed.

Copyright 2003 Sun Microsystems, Inc. All rights reserved