The application should "do stuff".
It looks like it is a Malaysian college's help desk application.
You would need to deploy this application into a web container like tomcat to see it run. I'm not sure if netbeans has a web container or not, but I would be surprised if it didn't.
You will also need a database of some sort with the correct database schema. I didn't see any database sql scripts so you might have to try and infer every table and relationship.
Luckily the application is quite small, but if you really want to get that app running you have a LOT of reverse engineering to do.