Java never got that slow, but it used to tax the system a lot in the earlier days, yes.
I developed Java with Eclipse, but the project I did was not that big when Eclipse was not its prime, and it was in its prime when I was experienced enough to be able to "floor it" in terms of features and project complexity.
Now it's just a blip on the memory usage graph when working with big projects, and way way more efficient than the Electron apps which supposed to do 20% of what Eclipse can do.
I developed Java with Eclipse, but the project I did was not that big when Eclipse was not its prime, and it was in its prime when I was experienced enough to be able to "floor it" in terms of features and project complexity.
Now it's just a blip on the memory usage graph when working with big projects, and way way more efficient than the Electron apps which supposed to do 20% of what Eclipse can do.