This week's book giveaway is in the Performance forum. We're giving away four copies of The Java Performance Companion and have Charlie Hunt, Monica Beckwith, Poonam Parhar, & Bengt Rutisson on-line! See this thread for details.
With respect to User and Daemon threads: a) Daemon threads can not be destroyed b) Running User threads prevent a JVM from terminating program c) Running Daemon threads prevent a Java VM from terminating program d) Daemon threads can not be grouped together e) The JVM can terminate program when only daemon threads are running My answer : a b e but given only b,e can anyone explain??