Microservices in Java - Java EE 7 example

ApplicationConfig.java

@ApplicationPath("/")
public class ApplicationConfig extends Application {

   @Override
   public Set<Class<?>> getClasses() {
      Set<Class<?>> resources = new HashSet<>();
      resources.add(HelloResource.class);
      return resources;
   }
}

HelloResource.java

@Path("hello")
public class HelloResource {

   @GET
   public Response greet() {
      return Response.ok("Hello World").build();
   }
}

pom.xml

<dependencies>
  <dependency>
    <groupId>javax</groupId>
    <artifactId>javaee-web-api</artifactId>
    <version>7.0</version>
    <scope>provided</scope>
  </dependency>
</dependencies>