Ubiquity
HashMaps are very common both in Java and the wider programming world as a whole.
You can mostly get away with just knowing how to use them and what they do, but if you want to take a deeper dive this video is a good start.
HashMaps are very common both in Java and the wider programming world as a whole.
You can mostly get away with just knowing how to use them and what they do, but if you want to take a deeper dive this video is a good start.