You still have 63% RAM available in that screenshot, there are zero problems with Java using 13% RAM. It’s the same as the tired old trope of “ChRoMe Is EaTiNg My MeMoRy”. Unused memory is wasted memory if it can be used for caching instead, so unless you’re running out of available memory, there is no problem.

Also, the JVM has a lot of options for configuring its various caches as well as when it allocates or releases memory. Maybe take a look at that first.

Edit: Apparently people don’t want to hear this but don’t have any actual arguments to reply with. Sorry to ruin your “JaVa BaD” party.

https://www.duden.de/sprachwissen/sprachratgeber/anscheinend-oder-scheinbar

Mir war das selbst lange Zeit nicht bewusst, aber seit ich es weiß, fällt es mir jedes Mal auf…

Anscheinend*

Tut mir Leid, ich konnte nicht widerstehen…