java.util.prefs
Class PreferenceChangeEvent

java.lang.Object   
  java.util.EventObject   
      java.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.