Java-based conatiner configuration with no web.xml.

WebAppInitializer.java

public class WebAppInitializer implements WebApplicationInitializer {

	public void onStartup(ServletContext container) throws ServletException {
		// Create the 'root' Spring application context
		AnnotationConfigWebApplicationContext rootContext = new AnnotationConfigWebApplicationContext();
		rootContext.register(RootContextConfig.class);

		// Manage the lifecycle of the root application context
		container.addListener(new ContextLoaderListener(rootContext));

		// Create the dispatcher servlet's Spring application context
		AnnotationConfigWebApplicationContext dispatcherContext = new AnnotationConfigWebApplicationContext();
		dispatcherContext.register(mytld.mycompany.myapp.config.appServlet.ServletContextConfig.class);

		// Register and map the dispatcher servlet
		ServletRegistration.Dynamic dispatcher = container.addServlet(
				"appServlet", new DispatcherServlet(dispatcherContext));
		dispatcher.setLoadOnStartup(1);
		dispatcher.addMapping("/main");

	}

}