anchor.diff:  import javax.ws.rs.Path;
   import javax.ws.rs.Produces;
   import javax.ws.rs.core.MediaType;
  +import org.jboss.logging.Logger;
   
   @Path("/hello")
   public class TracedResource {
   
  +    private static final Logger LOG = Logger.getLogger(TracedResource.class);
  +
       @GET
       @Produces(MediaType.TEXT_PLAIN)
       public String hello() {
  +        LOG.info("hello");
           return "hello";
       }
   }
  
positive.code: When the first request has been submitted, the Jaeger tracer within the app will be initialized:
  ```
  2019-10-16 09:35:23,464 INFO  [io.jae.Configuration] (executor-thread-1) Initialized tracer=JaegerTracer(version=Java-0.34.0, serviceName=myservice, reporter=RemoteReporter(sender=UdpSender(), closeEnqueueTimeout=1000), sampler=ConstSampler(decision=true, tags={sampler.type=const, sampler.param=true}), tags={hostname=localhost.localdomain, jaeger.version=Java-0.34.0, ip=127.0.0.1}, zipkinSharedRpcSpan=false, expandExceptionLogs=false, useTraceId128Bit=false)
  ```
  
  Then visit the http://localhost:16686[Jaeger UI] to see the tracing information.
  
negative.code: 
  [source, text]
  ----
  docker run -p 5775:5775/udp -p 6831:6831/udp -p 6832:6832/udp -p 5778:5778 -p 16686:16686 -p 14268:14268 jaegertracing/all-in-one:latest
  ----
  
  Now we are ready to run our application. If using `application.properties` to configure the tracer:
  