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Added in API level 1

java.util.prefs

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.

Interfaces

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.

Classes

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.

Exceptions

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.