So basically what i'm trying to do is create a pokedex AR code generator. I already know how each is generated, but what i want to do is create a grid tht I would turn into an image. I don't need to generate an image. I could technically just draw the grid & leave it, but I want to learn a bit more. I know there are already programs tht do this, but i just wanted to have a wack at it myself. practice is important right? I could also directly draw this to the image instead of making a grid first. I was reading & apparently i have to use bufferedimages? i kinda get it, but can anyone elaborate?

Do u know of any good tutorials? :/ I tried looking around but most of it isn't exactly helpful. I have a vague idea of whats going on.