[spartango]

* If you are using the JVM's generational + concurrent garbage collectors, generally the hoards of little objects disappear without hiccups or leaving much of a footprint.

* My beef with threads for concurrency revolves not around memory footprint (can you substantiate threads as "memory hogs"?), but instead around the necessity to be mindful of resource sharing. Yes, the JDK gives you lots of useful tools in this quest, but it's still not all that difficult to end up with a deadlocked app.