JetBrains IntelliJ IDEA Ultimate

IntelliJ IDEA Ultimate is a fully-fledged commercial IDE for the JVM platform.

IntelliJ IDEA provides all the tools you need for productive enterprise, Web, and mobile development. The IDE supports Java, Groovy, Kotlin, Scala, Android, JavaScript, SQL and lots of other languages and frameworks. It offers instant and clever code completion, on-the-fly code analysis and reliable refactoring tools.

Build, Install and Run Flatpak (locally)

Assuming flatpak, flatpak-builder, and git are installed, then execute the following commands:

$ git clone --recurse-submodules https://github.com/flathub/com.jetbrains.IntelliJ-IDEA-Ultimate.git
$ cd com.jetbrains.IntelliJ-IDEA-Ultimate/
$ flatpak remote-add --if-not-exists --user flathub https://flathub.org/repo/flathub.flatpakrepo
$ flatpak-builder build --force-clean --install-deps-from=flathub --install --user com.jetbrains.IntelliJ-IDEA-Ultimate.yaml

# ...to uninstall the artifact
$ flatpak uninstall --delete-data --user com.jetbrains.IntelliJ-IDEA-Ultimate

# ...and to clean-up everything
$ rm --force --recursive .flatpak-builder/ build/
$ flatpak uninstall --unused --user
$ flatpak remote-delete --user flathub