Fastest way to create a Java message dialog (swing/awt/other)?

Question

I\'m creating a Java application that will do some processing then needs to display a message to give the user feedback.

However, it appears to be incredibly slow -

Answer 1

Since you're interested in speeding this up, and since most of the overhead seems to be JVM startup overhead, check out Nailgun which aims to address slow JVM startup by keeping a JVM running in the background all the time. In your case, after one run the Swing library too will end up being cached (and hopefully after a few more runs JITed too), further reducing the overhead.

However this approach will lead to increased memory usage due to the background JVM and also cause other problems since it may not be straightforward to determine when to shut it down.