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Datei: SkipNegative.java Sprache: JAVA

/*
* Copyright (c) 1998, 2010, 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 4150442
   @summary Skip must throw an exception for negative args
*/

import java.io.*;

public class SkipNegative {
    public static void main(String argv[]) throws Exception {
        File f = new File(System.getProperty("test.src", "."),
                          "SkipInput.txt");
        FileReader fr = new FileReader(f);
        long nchars = -1L;
        try {
            long actual = fr.skip(nchars);
        } catch(IllegalArgumentException e){
            // Negative argument caught
            return;
        } finally {
            fr.close();
        }
        throw new Exception("Skip should not accept negative values");
    }
}

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