Module java.prefs

Package 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 declared in class java.util.EventObject

source

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
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 declared in class java.util.EventObject

getSource, toString

Methods declared in class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

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 Details

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.