Download Java SE Development Kit 5.0 "Linux self-extracting file" version from http://java.sun.com/

Install software that converts self-extracting file to Debian package:
  $ sudo apt-get install java-package

Convert the self-extracting file to a Debian package:
  $ fakeroot make-jpkg jdk-1_5_0_15-linux-i586.bin

Install the debian package:
  $ sudo dpkg -i sun-j2sdk1.5_1.5.0+update15_i386.deb

Check Java's installed and working:
  $ java -version

Extract PCPserial:
  $ unzip PCPserial.zip

Extract and install rxtx libraries:
  $ unzip rxtx-2.1-7-bins-r2.zip
  $ cd rxtx-2.1-7-bins-r2
  $ sudo cp RXTXcomm.jar /usr/lib/j2sdk1.5-sun/jre/lib/ext/
  $ cd Linux/i686-unknown-linux-gnu
  $ sudo cp * /usr/lib/j2sdk1.5-sun/jre/lib/i386

Ensure the USB IO board is not plugged in (unplug if it is)

Clear the dmesg ring buffer (i.e. remove old messages):
  $ sudo dmesg -c >/dev/null

List the usb devices:
  $ lsusb

Plug board in, and wait a few seconds.

Confirm the board has been detected as a USB device:
  $ dmesg
  There should be a reference to a new USB device being detected and a configuration being chosen.

List the USB devices again, comparing the output with that of the previous run to discover the vendor and product IDs of the IO board:
  $ lsusb

  New line:
  Bus 004 Device 004: ID 04d8:000a Microchip Technology, Inc.

Load the usbserial kernel module, passing it the vendor and product IDs:
  $ sudo modprobe usbserial vendor=0x4d8 product=0x000a

Run dmesg again.  It should say that the IO board has been attached to ttyUSB0

To make the usbserial module load at subsequent boots, edit /etc/modules:
  $ sudo vi /etc/modules
Add the following line to the end of the file:
  usbserial vendor=0x4d8 product=0x000a

Give your account permission to access the serial port:
  $ sudo usermod -a -G dialout <username>

Update source with correct serial port (portName = "/dev/ttyUSB0"):
  $ vi src/com/bt/pcp/Measure.java

Recompile:
  $ javac -sourcepath src -d bin src/com/bt/pcp/Measure.java

Run program:
  $ java -cp bin com.bt.pcp.Measure