Yes, JNC (Java NETCONF Client) is an open source Tail-f initiative that implements a widely used and very stable Java library for use in a NETCONF client together with a, still considered experimental, YANG --> Java output format plugin for pyang. See https://github.com/tail-f-systems/JNC/
JNC can be used to manage any NETCONF device and is typically a core component in an EMS/NMS solution. It is used to manipulate pieces of configuration data through its generated Java classes. The NETCONF parts of the library are used to communicate with the managed devices, such as ConfD enabled devices / virtual instances.
JNC is used in a NETCONF client implementation, ConfD implements a NETCONF server.
To run the main JNC example, Download JNC, copy the jnc.py script to your ConfD pyang plugin dir (e.g $(CONFD_DIR)/lib/pyang/pyang/plugins/), go to the JNC/jnc folder,
$ ant jar
Now go to the JNC/examples/0-intro/confd folder,
$ make clean all start
Next go to the JNC/examples/0-intro/
$ ant compile run