| Package | Description | 
|---|---|
| java.util.prefs | 
 This package allows applications to store and retrieve user and system
preference and configuration data. 
 | 
| Class and Description | 
|---|
| AbstractPreferences
 This class provides a skeletal implementation of the  
Preferences
 class, greatly easing the task of implementing it. | 
| BackingStoreException
 Thrown to indicate that a preferences operation could not complete because
 of a failure in the backing store, or a failure to contact the backing
 store. 
 | 
| InvalidPreferencesFormatException
 Thrown to indicate that an operation could not complete because
 the input did not conform to the appropriate XML document type
 for a collection of preferences, as per the  
Preferences
 specification. | 
| NodeChangeEvent
 An event emitted by a Preferences node to indicate that
 a child of that node has been added or removed. 
 | 
| NodeChangeListener
 A listener for receiving preference node change events. 
 | 
| PreferenceChangeEvent
 An event emitted by a Preferences node to indicate that
 a preference has been added, removed or has had its value changed. 
 | 
| PreferenceChangeListener
 A listener for receiving preference change events. 
 | 
| Preferences
 A node in a hierarchical collection of preference data. 
 | 
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