Thanks for your answer. May be I didn't explain so clearly， A.1, A.2, B.1 are not in the event. The real data is just like 978 Start 1152 Start 1358 Start 1375 Controller 1569 Start 1577 Controller 1771 Controller 1965 Start 2095 Controller 2167 Start 2348 Start Is there any way which could calculate the difference between first start and controller, and the subsequence? ... View more

Just place the class under /bin of your app ... View more