test/jdk/java/nio/channels/ConfigureBlocking.java

/*
 * Copyright (c) 2003, 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.
 *
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 * questions.
 */

/* @test
 * @bug 4797768
 * @summary test configureBlocking on closed channels
 */

import java.io.*;
import java.nio.channels.*;

public class ConfigureBlocking {
    public static void main (String [] str) throws Exception {
        SelectableChannel [] channels = null;
        channels = new SelectableChannel [] {
            DatagramChannel.open(),
            SocketChannel.open(),
            ServerSocketChannel.open()};
        for (int i = 0; i < channels.length; i++) {
            SelectableChannel channel = channels[i];
            channel.close();
            try {
                channel.configureBlocking(true);
                throw new RuntimeException("expected exception not thrown");
            } catch (ClosedChannelException e) {
                // Correct result
            }
        }
    }
}