This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
A daemon thread is a normal thread that does not force the JVM to remain running. Put another way, the JVM will shut down when all non-daemon threads are finished running, regardless of whether there are daemon threads still running or not.