java source code of Main

package org.n3r.idworker;

import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.nio.SelectChannelConnector;
import org.eclipse.jetty.servlet.ServletContextHandler;
import org.eclipse.jetty.servlet.ServletHolder;

public class Main {
    public static void main(String[] args) throws Exception {
        Server server = new Server();

        SelectChannelConnector connector = new SelectChannelConnector();
        int port = Integer.parseInt(System.getProperty("port", "18001"));
        connector.setPort(port);
        server.addConnector(connector);

        ServletContextHandler context = new ServletContextHandler(ServletContextHandler.SESSIONS);
        context.addServlet(new ServletHolder(new IdWorkerServlet()), "/*");
        server.setHandler(context);

        server.start();
        server.join();

    }
}