How do Java server applications work?

Question

Java

There is a task to lift Camel application under JBoss Fuse. The standalone version works, I load the jar into JBoss EAP or Fuse Karaf - it's dull as in a tank, even the test println does not produce anything.
I begin to suspect that server applications are arranged somehow in a special way. The standalon is launched via main(), the web application processes the http request, it is as if the user launches it, but how does the server application work, which, for example, sits on the bus and scatters files back and forth. Who "launches" it?

Answer 1

Uh, when I touched this "G" it was not as easy as I would like.
But if you need a simple "Hello World", then read the JBoss Fuse documentation .
There you still need to install their special IDE in order to deploy the application from it.
If you deploy jar / war manually, then the CLI is strange there.