I’ve used javadocs plenty, and really like them, but they are organised by package and class, so figuring out how to do something when you don’t know what package to use is very painful. Say you want to know how to delete a file at a given path. I’ve been around the block a few times, so I’ll know that it’ll probably be an operation on java.nio.file.Path, so I can find the Java doc for that, hit “Uses”, and search for “remove” (nothing) and “delete” (ah-hah, there it is).

If you don’t have a starting point like that from prior experience or stackoverflow, you’re stuck clicking around the package lists, hoping to land on something useful