What is an example of the standard library where String is used?

Question

Java

At one of the interviews, they asked a rather unusual question that drove me into a stupor =) You can get an example of the standard library where it is used from your head. String. And collections - HashMap, HashSet . Since I am a novice developer, I did not answer this question. When I started to google it, I did not find direct answers to it either. Tell me please)

Answer 1

You somehow misunderstood the question, for sure. Java has only one standard library, and the String class is part of it.

Answer 2

String is pretty simple. StringBuilder and StringBuffer immediately come to mind.
HashMap is used in HashSet (i.e. HashSet is a "truncated" HashMap).