REST Example with Application

import jakarta.ws.rs.ApplicationPath;
import jakarta.ws.rs.core.Application;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;

@ApplicationPath("/rest-prefix")
public class ApplicationConfig extends Application {
    public Set<Class<?>> getClasses() {
        return new HashSet<Class<?>>(Arrays.asList(SimpleRESTPojo.class, SimpleRESTEJB.class));
    }
}

import jakarta.ejb.Lock;
import jakarta.ejb.LockType;
import jakarta.ejb.Singleton;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;
import java.util.Date;

@Singleton
@Lock(LockType.READ)
@Path("/ejb")
public class SimpleRESTEJB {
    @GET
    public String ejb() {
        return "ejb ok @ " + new Date().toString();
    }
}

import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;
import java.util.Date;

@Path("/pojo")
public class SimpleRESTPojo {
    @GET
    public String pojo() {
        return "pojo ok @ " + new Date().toString();
    }
}

<web-app xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
         metadata-complete="false"
         version="2.5">

  <display-name>OpenEJB REST Example</display-name>
</web-app>