PreferenceChangeEvent

public class PreferenceChangeEvent
extends EventObject

java.lang.Object
   ↳ java.util.EventObject
     ↳ java.util.prefs.PreferenceChangeEvent


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.

Summary

Inherited fields

protected Object source

The object on which the Event initially occurred.

Public constructors

PreferenceChangeEvent(Preferences node, String key, String newValue)

Constructs a new PreferenceChangeEvent instance.

Public methods

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.

Inherited methods

Object getSource()

The object on which the Event initially occurred.

String toString()

Returns a String representation of this EventObject.

Object clone()

Creates and returns a copy of this object.

boolean equals(Object obj)

Indicates whether some other object is "equal to" this one.

void finalize()

Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.

final Class<?> getClass()

Returns the runtime class of this Object.

int hashCode()

Returns a hash code value for the object.

final void notify()

Wakes up a single thread that is waiting on this object's monitor.

final void notifyAll()

Wakes up all threads that are waiting on this object's monitor.

String toString()

Returns a string representation of the object.

final void wait(long timeoutMillis, int nanos)

Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

final void wait(long timeoutMillis)

Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

final void wait()

Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

Public constructors

PreferenceChangeEvent

Added in API level 1
public PreferenceChangeEvent (Preferences node, 
                String key, 
                String newValue)

Constructs a new PreferenceChangeEvent instance.

Parameters
node Preferences: The Preferences node that emitted the event.

key String: The key of the preference that was changed.

newValue String: The new value of the preference, or null if the preference is being removed.

Public methods

getKey

Added in API level 1
public String getKey ()

Returns the key of the preference that was changed.

Returns
String The key of the preference that was changed.

getNewValue

Added in API level 1
public String getNewValue ()

Returns the new value for the preference.

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

getNode

Added in API level 1
public Preferences getNode ()

Returns the preference node that emitted the event.

Returns
Preferences The preference node that emitted the event.