How to force old Java client from Jagex Launcher?

[Espionage724]

Apparently if you had the old client installed before Jagex Launcher or some other condition, you can select the Java client from Jagex Launcher instead of C++ or RL. I recall a news post saying something like the Java client won't receive any feature updates but will continue to be supported.

Does anyone know more details about this or how or if the Java client can be used with Jagex Launcher today?

(I want the official OSRS Java client and not RuneLite that runs through Java)

Edit: Solved easy! Install OldSchool.msi from https://oldschool.runescape.com/download?force_test=control and then Jagex Launcher. Jagex Launcher then shows the Legacy Java client as a choice.