I am building a examination system. But I don't know how to implement a timer / clock.
When user is taking an exam, he should have a countdown timer. How to do this ? how to remember the time between jsp pages ? seperate thread to countdown time in server side ?
Well, if you have the exam sent at one go, that is if the user doesn't have to submit every question, but submits the answers all at once, you have to set the timer in a javascript as depicted here