This week's giveaway is in the EJB and other Java EE Technologies forum. We're giving away four copies of EJB 3 in Action and have Debu Panda, Reza Rahman, Ryan Cuprak, and Michael Remijan on-line! See this thread for details.
How is the lifecycle of a POJO Singleton instance managed in an app / web server. I have a Singleton class and this will be accessed by some components which are under the control of an app server. Now upon first request for this Singleton instance, the ClassLoader will load the class in memory, create an instance and is this instance retained in the memory untill the app server is brought down?