@Roshan123 Greenfoot is actually BlueJ. More precisely, Greenfoot is an extension for BlueJ, BlueJ is still running in the background and response for stuff like the editor. However you can’t really compare BlueJ to IntelliJ, that’s a huge difference

Oh you know this is really just my testing sandbox for all kinds of things. I’m at a point where I can’t just hit „upload“ to see if it works on the website, so I use this scenario to test small things, like right now weather java.util.Optional works online