PreferencesFactory


1   /*
2    * @(#)PreferencesFactory.java  1.4 03/12/19
3    *
4    * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
5    * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
6    */
7   
8   package java.util.prefs;
9   import java.util.*;
10  
11  /**
12   * A factory object that generates Preferences objects.  Providers of
13   * new {@link Preferences} implementations should provide corresponding
14   * <tt>PreferencesFactory</tt> implementations so that the new
15   * <tt>Preferences</tt> implementation can be installed in place of the 
16   * platform-specific default implementation.
17   *
18   * <p><strong>This class is for <tt>Preferences</tt> implementers only.
19   * Normal users of the  <tt>Preferences</tt> facility should have no need to
20   * consult this documentation.</strong>
21   *
22   * @author  Josh Bloch
23   * @version 1.4, 12/19/03
24   * @see     Preferences
25   * @since   1.4
26   */
27  public interface PreferencesFactory {
28      /**
29       * Returns the system root preference node.  (Multiple calls on this
30       * method will return the same object reference.)
31       */
32      Preferences   systemRoot();
33  
34      /**
35       * Returns the user root preference node corresponding to the calling
36       * user.  In a server, the returned value will typically depend on
37       * some implicit client-context.
38       */
39      Preferences   userRoot();
40  }
41

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