The client which will do a mutual authentication ping request with the server. The server needs to be running before the client is run, else the mojo-exec-plugin will fail. After ensuring that the certificates have been generated and the server is up, run the following command
mvn package && mvn exec:java
The path to the certificate files can be changed here, by the *StoreUrl final variables. This is a source change and needs to be recompiled to take effect.