I decided to add more standard gui to my application: menu and toolbar. If I use toolbar then I must use the icons but I'm not a good at graphics myself. Do you think I can download already made, free icons (from Sun or Eclipse for instance), copy them into my jar file, and use them in my application? Or maybe I canot use icons which are not made by me?
If you draw your own icons, it may take too much time and not look good. If you use a downloaded icon, you risk automatic failure for submitting something you did not write. So why risk it while there is nothing to gain?