Build 3 of JDK 17 Early Access Builds includes the implementation for JDK-8251989 ("Hex formatting and parsing utility"). This newly introduced functionality for parsing and formatting hexadecimal values is encapsulated in the new class java.util.HexFormat and is the subject of this post.
Running javap against the new java.util.HexFormat class provides an easy way to see an overview of its API. The following output is generated from running javap java.util.HexFormat: