compact3
java.util.prefs
Class PreferenceChangeEvent
- java.lang.Object
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- java.util.EventObject
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- java.util.prefs.PreferenceChangeEvent
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- 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:
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Preferences,PreferenceChangeListener,NodeChangeEvent
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Field Summary
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Fields inherited from class java.util.EventObject
source
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Constructor Summary
Constructors Constructor and Description PreferenceChangeEvent(Preferences node, String key, String newValue)Constructs a newPreferenceChangeEventinstance.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method and Description StringgetKey()Returns the key of the preference that was changed.StringgetNewValue()Returns the new value for the preference.PreferencesgetNode()Returns the preference node that emitted the event.-
Methods inherited from class java.util.EventObject
getSource, toString
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Constructor Detail
PreferenceChangeEvent
public PreferenceChangeEvent(Preferences node, String key, String newValue)
Constructs a newPreferenceChangeEventinstance.- Parameters:
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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.
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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.
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For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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