The parent said "Not to mention the pain point that it still is to install and configure a JDK, and make it work properly with Intellij, why is it still so complicated?" It is NOT complicated. Everybody can try this out. But if the parent had these problems on some specific project where thigs were messed up, he should not generalize these problems from a specific project to every Java project... Everybody can install a fresh IntelliJ IDEA and fresh JDK - and see that this is easy and not complicated at all.