Server.java

//
// Copyright (c) ZeroC, Inc. All rights reserved.
//

public class Server
{
    static class ShutdownHook extends Thread
    {
        @Override
        public void
        run()
        {
            _communicator.destroy();
        }

        ShutdownHook(Ice.Communicator communicator)
        {
            _communicator = communicator;
        }

        private final Ice.Communicator _communicator;
    }

    public static void
    main(String[] args)
    {
        int status = 0;
        Ice.StringSeqHolder argsHolder = new Ice.StringSeqHolder(args);

        //
        // Try with resources block - communicator is automatically destroyed
        // at the end of this try block
        //
        try(Ice.Communicator communicator = Ice.Util.initialize(argsHolder))
        {
            //
            // Install shutdown hook to (also) destroy communicator during JVM shutdown.
            // This ensures the communicator gets destroyed when the user interrupts the application with Ctrl-C.
            //
            Runtime.getRuntime().addShutdownHook(new ShutdownHook(communicator));

            if(argsHolder.value.length > 0)
            {
                System.err.println("too many arguments");
                status = 1;
            }
            else
            {
                Ice.ObjectAdapter adapter = communicator.createObjectAdapter("Hello");
                Ice.Properties properties = communicator.getProperties();
                Ice.Identity id = Ice.Util.stringToIdentity(properties.getProperty("Identity"));
                adapter.add(new HelloI(properties.getProperty("Ice.ProgramName")), id);
                adapter.activate();

                communicator.waitForShutdown();
            }
        }

        System.exit(status);
    }
}