JAR installer that auto-detects if Java is there and autostarts the application

Question

I need to build an installer that does the following:

1. Installs my jar on the client.
2. Auto-detects if JRE is installed (in which case it does not re-in

Answer 1

Haven't heard of anything that works across all those platforms, but JSmooth might help (fits your needs on Windows). I've used it about 2 years ago and it worked fine.