I want to use a Raspberry Pi 3 to host a server for a game I am making.
I tried using the built-in bluej ide to make a Hello World app that opens a simple JFrame. When I made it into a jar and launched it, it asked me what program to use to open the file. Shouldn't a jar launch without using a program to open it?
What am I doing wrong? How can I execute a jar on my Raspberry Pi?