Jaeger Open Tracing

Here is my code to configure tracing and I do not see any traces in my Jaeger. Please advise what I’m missing here.
Tracer tracer = new JaegerTracer.Builder(“app-couchbase”)
.withReporter(new RemoteReporter.Builder()
.withSender(new UdpSender(“localhost”, 6831, 0))
.withSampler(new ConstSampler(true))
CouchbaseEnvironment couchbaseEnvironment = DefaultCouchbaseEnvironment.builder()

I’m passing this environment object to create MultiClusterClient, I’m not not seeing any trace in Jaeger. Can some one help on this?