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java.lang.Objectjava.util.EventObject
java.util.prefs.PreferenceChangeEvent
public class PreferenceChangeEvent
ObjectEvent fired when a Preferences entry changes.
This event is generated when a entry is added, changed or removed.
When an entry is removed then getNewValue
will return null.
Preference change events are only generated for entries in one particular
preference node. Notification of subnode addition/removal is given by a
NodeChangeEvent
.
Note that although this class is marked as serializable, attempts to serialize it will fail with NotSerializableException.
Field Summary |
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Fields inherited from class java.util.EventObject |
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source |
Constructor Summary | |
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PreferenceChangeEvent(Preferences node,
String key,
String value)
Creates a new PreferenceChangeEvent. |
Method Summary | |
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String |
getKey()
Returns the key of the entry that was added, changed or removed. |
String |
getNewValue()
Returns the new value of the entry that was added or changed, or returns null when the entry was removed. |
Preferences |
getNode()
Returns the source Preference node from which an entry was added, changed or removed. |
Methods inherited from class java.util.EventObject |
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getSource, toString |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public PreferenceChangeEvent(Preferences node, String key, String value)
node
- The source preference node for which an entry was added,
changed or removedkey
- The key of the entry that was added, changed or removedvalue
- The new value of the entry that was added or changed, or
null when the entry was removedMethod Detail |
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public Preferences getNode()
public String getKey()
public String getNewValue()
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