How to add timer to a blackberry application

问题

Merged with how to add timer in a blackberry application.

Sir i am developing an application in blackberry.Its like a test with some questions,at the end of the test result is being displayed.Nw i want to add a timer at the top,so that when the test starts,till a user finishes a test,the time will be displayed at the top of the screen.So i want to add a timer for that.Time should be in the format of 00:00,& it will keep on increasing till the user finishes a test.Can anyone help me with the code for timer.

来源：https://stackoverflow.com/questions/3238525/how-to-add-timer-to-a-blackberry-application