If you can rename the images including a sequential number (easy enough to do, for example with IrfanView) then it would be easy to generate a filename at random and then pass this to loadImage...

Note that you might find nfs() useful if you land up with extra zero padding on the numbers in your filenames (e.g. 'img001.jpg').

Why would it be obvious that you are on a Mac?

OK, so I did this:

If woking with one of the images from the lib is not a single occurence is your program, and if your want just to display one of these images randomly after, say a user pushes a button and it is some sort of a repetitive or multiple times used action, I would recommend first loading all the images into an array and then getting one of them at random by referring to a random index of your images array. This way is more sane since you get all the images pre-loaded which is generally a good thing to do because of numerous performance and convinience bonuses.

I would recommend first loading all the images into an array and then getting one of them at random by referring to a random index of your images array.

Bad idea, it is the best way to run out of memory and lag a lot at start up time... That's 551 images there! Now, one can load an image in advance, while waiting for an action.

Note: to avoid renaming, it wasn't a bad idea to load the file names in an array of strings. You can do that automatically with Java's File's list() function.

I thought about loading them all up into an array, but is there an easy way to do this without writing out endless lines of code?

wrote my response at the same time as phi.lho there... so I need to use the list() function.  Will research.  Cheers

in the shell create a file containing all the names:
ls files > file_list

then use loadStrings("file_list");

(File.list() will also return directories and all other files in the directory. you can filter them out.)

I modified the code slightly.  I decided that I didn't need to load all 550+ images, and that I would load up 5 to use in each instance of the program.  Thus:

Hi there codeless. Here's my solution.