May 12, 2009 at 10:10 AM
The sleep() method of the thread is a static method. Calling sleep() causes the currently executing thread to sleep (temporarily cease execution) for the specified number of milliseconds. This means when you are calling t1.sleep() or t2.sleep(), you are causing the CURRENT thread to sleep.
May 12, 2009 at 1:38 PM
Thread.sleep() causes the current thread to suspend execution for a specified period.Here you allow the threads t1 and t2 to sleep.As t1 sleeps for 4 seconds and t2 7 seconds.Therefore, t1 finished first.