JSF :: Connecting To POJOs Through TomEE Plus Server?

I've created a Dynamic Web Project in Eclipse Kepler EE, connected it to a Tomee plus 1.7.1 server and created a servlet and a POJO. So after opening the browser and trying to do something with the classes, the servlet worked as expected, but the POJO returns error 404.

The actual code is something like this:

// The servlet
public class MyServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
PrintWriter out = response.getWriter();
out.println("I'm a servlet.");

[Code] ......

So when I type "localhost:8080/<project_name>/MyServlet" I get the expected "I'm a servlet." message. The problem is with the POJO:

//The POJO
@Path("/MyPOJO")
public class MyPOJO {
@GET
public String get() throws IOExeption {
return "I'm a POJO.";
}
}

I have nothing about that class in the web.xml file. I have this class, that I don't really know what it does:

@ApplicationPath("/sth")
public class ApplicationConfig extends Application {
@Override
public Set<Class<?>> getClasses() {
return new HashSet<Class<?>>(Arrays.asList(MyPOJO.class));
}
}
Application is a class from M2_REPOjavaxws
sjavax.ws.rs-api2.0.1javax.ws.rs-api-2.0.1.jar

So when I enter "localhost:8080/<project_name>/sth/MyPOJO", I get error 404, no exceptions no logs. I've tried to debug but it doesn't hit any breakpoints.

Maybe it has something to do with the exception I get when I start the server:

Nov 19, 2014 6:44:50 PM org.apache.myfaces.ee6.MyFacesContainerInitializer onStartup
INFO: Added FacesServlet with mappings=[/faces/*, *.jsf, *.faces]
Nov 19, 2014 6:44:51 PM org.apache.myfaces.config.DefaultFacesConfigurationProvider getStandardFacesConfig
INFO: Reading standard config META-INF/standard-faces-config.xml

[code]....

I've tried to add the line that is missing in the server.xml file but then the server doesn't start at all.

When my college tries to run it on his PC, it work with both the POJO and the Servlet. We can't find any reason why it's not running on my PC.