How do I configure DispatcherServlet without using web.xml in Spring MVC?

Create a class implementing WebApplicationInitializer interface and implement onStartup() method. In this method we can register all the annotation based application configuration classes, servlet and its mappings, listener etc including DispatcherServlet.

public class WebAppInitializer implements WebApplicationInitializer {
   public void onStartup(ServletContext servletContext) throws ServletException {  
        AnnotationConfigWebApplicationContext ctx = new AnnotationConfigWebApplicationContext();  
        ctx.register(ApplicationConfig.class);  
        ctx.setServletContext(servletContext);    
        Dynamic dynamic = servletContext.addServlet("dispatcher", new DispatcherServlet(ctx));  
        dynamic.addMapping("/");  
        dynamic.setLoadOnStartup(1);  
   }  
} 

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