[ros-users] RosJava - System View

Hi Friends,
I am planning to implement some kind of system view to RosCore.
This view can show how many publishers/subscriber are conencted.
Also Other information (yet to collect it.)

But all members are private and I cannot query anything. Is that possible in
anyway?

Is there any visualisation implemented for roscpp?

Thanks and Regards
Abhishek Verma