Corrected exception message and fixed javadoc warnings Signed-off-by: miketran <miketran@us.ibm.com>
Corrected exception message and fixed javadoc warnings
Signed-off-by: miketran <7744469cb218816982a3e45f9177ac9f8608ed96@us.ibm.com>

ibm-watson-iot/iot-java,ibm-messaging/iot-java,sathipal/iot-java,amprasanna/iot-java,amitmangalvedkar/iot-java,ibm-watson-iot/iot-java