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
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Field Summary
Fields declared in class java.util.EventObject
source
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Constructor Summary
Constructors Constructor Description PreferenceChangeEvent(Preferences node, String key, String newValue)
Constructs a newPreferenceChangeEvent
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
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Constructor Details
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PreferenceChangeEvent
Constructs a newPreferenceChangeEvent
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.
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Method Details
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getNode
Returns the preference node that emitted the event.- Returns:
- The preference node that emitted the event.
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getKey
Returns the key of the preference that was changed.- Returns:
- The key of the preference that was changed.
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getNewValue
Returns the new value for the preference.- Returns:
- The new value for the preference, or
null
if the preference was removed.
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