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package java.util.prefs;

/**
 * A listener for receiving preference change events.
 *
 * @author  Josh Bloch
 * @see Preferences
 * @see PreferenceChangeEvent
 * @see NodeChangeListener
 * @since   1.4
 */
@FunctionalInterface
public interface PreferenceChangeListener extends java.util.EventListener {
    /**
     * This method gets called when a preference is added, removed or when
     * its value is changed.
     *
     * @param evt A PreferenceChangeEvent object describing the event source
     *          and the preference that has changed.
     */
    void preferenceChange(PreferenceChangeEvent evt);
}
