test/jdk/java/util/prefs/StubPreferences.java

/*
 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

import java.util.prefs.AbstractPreferences;

public class StubPreferences extends AbstractPreferences {
    public StubPreferences() { super(null, ""); }
    public String              getSpi(String x)           { return null; }
    public void                putSpi(String x, String y) { }
    public void                removeSpi(String x)        { }
    public AbstractPreferences childSpi(String x)         { return null; }
    public void                removeNodeSpi()            { }
    public String[]            keysSpi()                  { return null; }
    public String[]            childrenNamesSpi()         { return null; }
    public void                syncSpi()                  { }
    public void                flushSpi()                 { }
}