You can use the Apache Wink REST client as a client that can be run to send requests to your JAX-RS application.
The Apache Wink REST client is a Java-based HTTP client. This client provides convenience methods for using REST services. The JAX-RS specification does not currently define a standard client API. IBM® JAX-RS provides the Apache Wink REST client API as an easy to use client that enables easier integration with existing programs.
You have implemented a JAX-RS client using the Apache Wink Rest client that can issue requests to a JAX-RS application.