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Datei: Sprache: JAVA

/*
* Copyright (c) 1998, 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 4152455
   @summary A null lock in the create must throw an exception
*/

import java.io.*;

public class NullLock {
    public static void main(String argv[]) throws Exception {
        if (!testBufferedReader())
            throw new Exception("Buffered Reader constructor: "
                                + "Null argument must throw an exception");
        if (!testBufferedWriter())
            throw new Exception("BufferedWriter constructor: "
                                + " Null arg must throw an exception");
    }

    static boolean testBufferedReader(){
        try {
            InputStreamReader isr = null;
            BufferedReader br = new BufferedReader(isr);
        } catch(NullPointerException e) {
            return true;
        }
        return false;
    }

    static boolean testBufferedWriter(){
        try {
            OutputStreamWriter isr = null;
            BufferedWriter br = new BufferedWriter(isr);
        } catch(NullPointerException e) {
            return true;
        }
        return false;
    }

}

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