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
Constructor | Description |
---|---|
PreferenceChangeEvent(Preferences node,
String key,
String newValue) | Constructs a new |
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 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, ornull
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.