1 /*

     2  * Copyright (c) 2009, 2017, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 import java.io.IOException;

    25 import java.nio.channels.SelectionKey;

    26 import java.nio.channels.Selector;

    27 import java.nio.channels.SocketChannel;

    28 

    29 public class LotsOfUpdates {

    30     public static void main(String[] args) throws IOException {

    31         Selector sel = Selector.open();

    32         SocketChannel sc = SocketChannel.open();

    33         sc.configureBlocking(false);

    34         SelectionKey key = sc.register(sel, 0);

    35         for (int i=0; i<50000; i++) {

    36             key.interestOps(0);

    37         }

    38         sel.selectNow();

    39     }

    40 }