As an outsider to the npm ecosystem, reading this list of packages is astonishing. Why do js people import someone else's npm module for every little trivial thing?
This is spreading everywhere, Rust, Python, ...
Not Java, thankfully! Libraries containing 1-2 trivial classes do exist, but they're an exception rather than a rule. Might be that the process of publishing to Maven Central is just convoluted enough to deter the kinds of people who would publish such libraries.
Also because Java, .NET, etc. all have very expansive standard libraries. You don't need to import most stuff, as it's already built-in.