Install Oracle Java on Ubuntu using a PPA

$ sudo apt-add-repository ppa:webupd8team/java
$ sudo apt-get update
$ sudo apt-get install oracle-java8-installer

Also ensure your JAVA_HOME variable has been set to:

/usr/lib/jvm/java-8-oracle

For this you can run the following command:

export JAVA_HOME=/usr/lib/jvm/java-8-oracle

To make it permanent you can add the the following to '/etc/environment':

JAVA_HOME=/usr/lib/jvm/java-8-oracle


Install RXTX (native interface to serial ports in Java)

$ sudo apt-get install librxtx-java
$ sudo ln -s /usr/lib/jni/librxtxSerial.so /usr/lib/
$ sudo usermod -a -G dialout $USER


For DATAQ155 (DI-155) can install optional USB to serial driver named usbserial:

$ sudo modprobe usbserial vendor=0x0683 product=0x1550