In java with a good IDE, you can ^Space yourself through a lot of problems without knowing the libraries too much. And even if you don't just pick the first thing sounding right, scrolling through the documentation of the auto suggested methods is very convenient.
On the other hand, my dev-laptop currently has about 20 different rust-doc pages open at the moment to keep track of ... the methods Iter<T> has, the methods IterTools has, Vec has, Slices have, what package FromStr was in again, what methods a str::fmt::Formatter has to implement Display to implement Error (that needs to be imported), where HashMap is, what methods those have...
I've been there multiple times over the last decade or two with multiple languages and rust is compelling enough to work through that.
But if you compare the ergonomics of modern java, go or python IDEs with my current vscode+rust-analyze state, rust isn't winning on IDE ergonomics. At least in my setup.
And that's very much a part of language choice.
