Java Servlet - SessionTrackingMode Examples

import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.SessionTrackingMode;
import javax.servlet.annotation.WebListener;
import java.util.EnumSet;

@WebListener
public class SessionTrackingModeSetter implements ServletContextListener {

    @Override
    public void contextInitialized (ServletContextEvent event) {
        System.out.println("--------\ncontext initialized\n------\n " + this);
        System.out.println("The default session tracking modes: " +
                            event.getServletContext()
                                 .getDefaultSessionTrackingModes());

        event.getServletContext()
             .setSessionTrackingModes(EnumSet.of(SessionTrackingMode.URL));
    }

    @Override
    public void contextDestroyed (ServletContextEvent sce) {
    }
}