Hi,

I was asked to build a java system that will have the ability to load new code (expantions) while running. How do I re-load a jar file while my code is running? or how do I load a new jar?

Obviously, since constant up-time is important, I'd like to add the ability to re-load existing classes while at it (if it does not complicate things too much). What are the things I should look out for? (think of it as two different questions - one regarding reloading classes at runtime, the other regarding adding new classes).