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| JavaTM 2 Platform Standard Ed. 5.0
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## Package java.util.prefs

This package allows applications to store and retrieve user and system preference and configuration data.

See:
Description

Interface Summary
NodeChangeListener | A listener for receiving preference node change events.
PreferenceChangeListener | A listener for receiving preference change events.
PreferencesFactory | A factory object that generates Preferences objects.

Class Summary
AbstractPreferences | This class provides a skeletal implementation of the `Preferences` class, greatly easing the task of implementing it.
NodeChangeEvent | An event emitted by a `Preferences` node to indicate that a child of that node has been added or removed.
PreferenceChangeEvent | An event emitted by a `Preferences` node to indicate that a preference has been added, removed or has had its value changed.
Preferences | A node in a hierarchical collection of preference data.

Exception Summary
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.

## Package java.util.prefs Description

This package allows applications to store and retrieve user and system preference and configuration data. This data is stored persistently in an implementation-dependent backing store. There are two separate trees of preference nodes, one for user preferences and one for system preferences.

Since:
  JDK1.4

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

Copyright 2004 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.