First round: 1) What is yield method 2) What is join method 3) difference between wait and sleep 4) real example of singleton 5) In eclipse, on what basis the tool suggest to catch/thow an exception 6) use of synchronize block in Thread 7) serilazation related to static variables/transient 8) parent class is serialized and child class not and vice versa 9) HashMap - inserting same keys and values 10) HashSet vs HashMap Second round: 1) how to avoid concurrentmodificationexception 2) what is factory design pattern 3) How to pass the session information from one application to another application
