test/java/io/FileOutputStream/FileOpenNeg.java

/*
 * Copyright (c) 2006, 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.io.*;

public class FileOpenNeg {

    public static void main( String[] args) throws Exception {
        boolean openForWrite = true;

        File f = new File(args[0]);
        try {
            FileOutputStream fs = new FileOutputStream(f);
            fs.write(1);
            fs.close();
        } catch( IOException e ) {
            System.out.println("Caught the Exception as expected");
            e.printStackTrace(System.out);
            openForWrite = false;
        }
        if (openForWrite && !f.canWrite()) {
            throw new Exception("Able to open READ-ONLY file for WRITING!");
        }
    }
}