run_args = ["java", "-jar", "pathToJar.jar"]

ptimer = ProcessTimer(run_args)

try:
    ptimer.execute()
    #poll as often as possible; otherwise the subprocess might
    # "sneak" in some extra memory usage while you aren't looking
    while ptimer.poll():
        time.sleep(.500)
finally:
    #make sure that we don't leave the process dangling
    ptimer.close()