(Solved) Got confused with setIcons()

[mitm]

It should work.

3.1 SDK custom icon for build

something like this? try { BufferedImage[] icons = new BufferedImage[] { ImageIO.read( Main.class.getResource( "/Interface/icons/animalia-128.png" ) ), ImageIO.read( Main.class.getResource( "/Interface/icons/animalia-64.png" ) ), ImageIO.read( Main.class.getResource( "/Interface/icons/animalia-32.png" ) ), ImageIO.read( Main.class.getResource( "/Interface/icons/animalia-16.png" ) ) }; …