obd2

gistfile1.txt

package lancerscan;

import jd2xx.JD2XX;

public class Test {

    public static void main(String[] args) throws Exception {

        JD2XX jd = new JD2XX();
        jd.open(0);

        int bytesAvailable = 0;

        while (bytesAvailable < 4) {
            jd.setBreakOn();
            try {
                Thread.sleep(1800);
            } catch (InterruptedException ex) {
                Thread.currentThread().interrupt();
            }
            jd.setBreakOff();
            bytesAvailable = jd.getQueueStatus();
            System.out.println(bytesAvailable);
        }

        if (bytesAvailable == 4) {
            System.out.println("INIT complete");
            jd.setBaudRate(15625);

            String msg = "33";
            int ret = jd.write(msg.getBytes());
            System.out.println(ret + " bytes sent.");
            Thread.sleep(1800);

            int response = jd.getQueueStatus();
            System.out.println("Engine RPM : >>> " + response);

        }

    }
}

Please provide a link to download jd2xx jar for ubuntu.

http://sourceforge.net/projects/d2xx/?source=typ_redirect