I usually story Singletons in the ServletContext which is unique for an application. I often think that ServletContext should be better named ApplicationContext because that is actually what it represents.
I don't feel comfortable to leave Singletons hanging around on static. variables. The benefit of ServletContext is, that you can easily participate on the lifecycle of the ServletContext (ServletContextListener::contextInitialized and ~::contextDestroyed) and take appropriate actions when your Singleton acquires any system resources.
Markus
Brian Kidney wrote:
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If I have a class in my application which is a singleton, is there only one object per server (Tomcat in my case), or is it unique to the session (ie. each user gets a different instance)?
Brian
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