Running multiple classes and files through Textpad

[nagatopain17]

I'm trying to run a group of files, basically a small game, but can't seem to get it going.

There's the main file and various other ones like Player.java,Tile.java, etc.

How do i get Textpad to run the whole program like an IDE would do instead of just one small file? Can't seem to figure this out, so maybe I'm stupid and just missing it or it isn't something that's normally done... Im not sure but any help is both useful and gratefully received!