Hi Gregg, That doesn't seem to be a JNI error, but a classpath error. To include the JNI layer you'll just have to set the LD_LIBRARY_PATH and the corresponding libraries should be loaded automatically. After build is done you should have a set of jar files and a set of .so files. The jar files are found in the java folder, and the .so files will be found in the output folder.
These are the commands I use on Linux, from the main IoTivity folder, but it should be similar for Darwin, with some path modications: export LD_LIBRARY_PATH=$(pwd)/out/linux/x86_64/debug/:$LD_LIBRARY_PATH java -cp java/examples-java/simpleclient/build/libs/simpleclient.jar:java/iotivity-linux/build/libs/iotivity-linux.jar org.iotivity.base.examples.SimpleClient
