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/*
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* Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package java.util.prefs;
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import java.util.*;
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/**
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* A factory object that generates Preferences objects. Providers of
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* new {@link Preferences} implementations should provide corresponding
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* <tt>PreferencesFactory</tt> implementations so that the new
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* <tt>Preferences</tt> implementation can be installed in place of the
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* platform-specific default implementation.
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*
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* <p><strong>This class is for <tt>Preferences</tt> implementers only.
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* Normal users of the <tt>Preferences</tt> facility should have no need to
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* consult this documentation.</strong>
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*
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* @author Josh Bloch
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* @see Preferences
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* @since 1.4
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*/
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public interface PreferencesFactory {
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/**
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* Returns the system root preference node. (Multiple calls on this
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* method will return the same object reference.)
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* @return the system root preference node
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*/
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Preferences systemRoot();
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/**
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* Returns the user root preference node corresponding to the calling
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* user. In a server, the returned value will typically depend on
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* some implicit client-context.
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* @return the user root preference node corresponding to the calling
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* user
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*/
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Preferences userRoot();
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}
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