Rest Easy Hello world example showing 404 not found error - rest

Question

As I didn't found any good tutorial for RestEasy + WildFly, I'm following this (https://robferguson.org/blog/2016/12/02/getting-started-with-resteasy/) tutorial and created a simple Hello World example of JAX-RS project using Resteasy 3.7.0.Final + Wildfly 13 + Java 8 + maven. This tutorial is actually using Jetty Http server.
Here is the Resource class :
#Path("/hello")
#Produces(MediaType.TEXT_PLAIN)
public class MessageResource {
#GET
#Path("/{param}")
public Response printMessage(#PathParam("param") String msg) {
String result = "Hello " + msg + "!";
return Response.status(200).entity(result).build();
}
}
And a class extending javax.ws.rs.core.Application - (all Rest resources will be registered by this class automatically)
#ApplicationPath("")
public class HelloWorldApplication extends Application {
public HelloWorldApplication() {}
#Override
public Set<Object> getSingletons() {
HashSet<Object> set = new HashSet<Object>();
set.add(new MessageResource());
return set;
}
}
In addition I have added jboss-deployment-structure.xml (which is not part of the tutorial) under WEB-INF to exclude the following modules :
<?xml version="1.0" encoding="UTF-8"?>
<jboss-deployment-structure>
<deployment>
<exclude-subsystems>
<subsystem name="resteasy" />
</exclude-subsystems>
<exclusions>
<module name="javaee.api" />
<module name="javax.ws.rs.api"/>
<module name="org.jboss.resteasy.resteasy-jaxrs" />
</exclusions>
<local-last value="true" />
</deployment>
</jboss-deployment-structure>
I suppose this excludes resteasy modules bundled with Wildfly (please correct me if I'm wrong), since I'm using latest version of RestEasy in pom.xml :
<properties>
<resteasy.version>3.7.0.Final</resteasy.version>
</properties>
In maven configuration I have removed the jetty plugin, and rest of the part in pom.xml is same as in tutorial example here, except the RestEasy version.
https://github.com/Robinyo/resteasy/blob/master/examples/helloworld/pom.xml
But when I try to run the example with URL http://localhost:8080/hello/World, I'm getting 404 - Not Found error.
Is there any part missing in maven configuration or wildfly configuration?