There are no such things as "stupid" questions. However if you think your question is a bit stupid, then this is the right place for you to post it. Please stick to easy to-the-point questions that you feel people can answer fast. For long and complicated questions prefer the other forums within the support section. Before you post please read this
Even if you didn't install from the software manager it should(applications I have installed from source or .deb have shown in Mint Menu) still. If it doesn't show and netbeans is installed you should be able to start it with the name of the package via terminal. In this case I think it would be "netbeans".
Which file did you download?
We all know that light travels faster than sound. That's why certain people appear bright until you hear them speak. -Albert Einstein
Formerly known as Luckydog.
Looking for me? Check the IRC I've been hanging out there.