jdk/test/sun/tools/common/ShutdownSimpleApplication.java

/*
 * Copyright 2005 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */

/*
 *
 *
 * Used to shutdown SimpleApplication. The argument to this class is
 * the TCP port number where SimpleApplication is listening.
 */
import java.net.Socket;
import java.net.InetSocketAddress;
import java.io.File;
import java.io.FileInputStream;

public class ShutdownSimpleApplication {
    public static void main(String args[]) throws Exception {

        // read the (TCP) port number from the given file

        File f = new File(args[0]);
        FileInputStream fis = new FileInputStream(f);
        byte b[] = new byte[8];
        int n = fis.read(b);
        if (n < 1) {
            throw new RuntimeException("Empty file");
        }
        fis.close();

        String str = new String(b, 0, n, "UTF-8");
        System.out.println("Port number of application is: " + str);
        int port = Integer.parseInt(str);

        // Now connect to the port (which will shutdown application)

        System.out.println("Connecting to port " + port +
            " to shutdown Application ...");

        Socket s = new Socket();
        s.connect( new InetSocketAddress(port) );
        s.close();
    }
}