Who can explain this behaviour?

Question

Java

During tomcat startup, I get Hello output in the browser and "I am called" output in the console.
But when I try to call this method through ApplTest like this, I get the output "InboundJaxrsResponse{context=ClientResponse{method=GET, uri= localhost:8080/Testing/register , status=200, reason=OK}}" but no "I am called" is not displayed in the console ..
Logically, if the response is 200, then there should be no problems .. Is there something wrong in the code?

@WebServlet("/register")
public class JerseyDemo extends HttpServlet{

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        resp.getWriter().print("Hello");
        System.out.println("I am called");
    }
}

public class ApplTest {

    public static void main(String[] args) {

       Client client = ClientBuilder.newClient();

        WebTarget webTarget = client.target("http://localhost:8080/Testing/register");
        System.out.println(webTarget.request().get().toString());
    }
}