How do I embed Tomcat in a Spring Framework MVC application?

I have created the required configurations/controller classes. But it's not clear to me how I should orchestrate these classes to use run a tomcat instance. I know with spring boot it's a matter of using SpringApplication.run(..). But I'm trying to explore the alternate method used prior to Spring Boot. I'm a bit new to the Spring Framework so forgive my ignorance. I'm also not using any XML configuration only using Java

public class SpittrWebAppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer
{

@Override //....
protected String[] getServletMappings(){
    return new String[] { "/" }; 
}

@Override //...
protected Class<?>[] getRootConfigClasses(){
    return new Class<?>[] { RootConfig.class };
}

@Override //.....
protected Class<?>[] getServletConfigClasses(){
    return new Class<?>[] { WebConfig.class };
}
}

I have created a controller

@Controller
@RequestMapping("/")
public class HomeController {

    @RequestMapping(method = RequestMethod.GET)
    public String home(){
        return "home";
    }

POM File:

    <dependencies>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>4.3.9.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
        <version>4.3.9.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>4.3.9.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.12</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-test</artifactId>
        <version>4.3.9.RELEASE</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <version>3.1.0</version>
        <scope>provided</scope>
    </dependency>
</dependencies>