/*
 * Copyright (c) 2012, 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.
 */

/* @test
 * @bug 7160242
 * @summary Check if NullPointerException is thrown if the key passed
 *          to remove() is null.
 */

import java.util.prefs.Preferences;

public class RemoveNullKeyCheck {

    public static void main(String[] args) throws Exception {
       try {
           Preferences node = Preferences.userRoot().node("N1");
           node.remove(null);
           throw new RuntimeException("Expected NullPointerException " +
                                      "not thrown");
       } catch (NullPointerException npe) {
           System.out.println("NullPointerException thrown");
       }
    }
}