Core java specially on String and collection then asked about my experience then move to Spring and hibernate on the same date I clear the questions so I got another call from the client then I was asked about Web-service then I clear the question b/c I was working on my own service so that it was easy then done ! but after that you have to be very careful ask additional money since I know the company lotting you in a daylight you work so hard but they sit and take your money. do your research specially if you relocate.