This tutorial contains references of java.util package in detail. It contains several classes and interfaces which are useful in Java application development.
It contains utility classes such as Arrays, ArrayList, and HashSet and their methods that help developers in their day to day programming tasks. The Collection Framework provides classes related to data handling and the Date class to deal with date and time in Java.
It has a Calendar class to manage calender related operations and Base64 class to encode and decode data in Java.
You will find references for most of the classes such as Locale, Scanner, StringJoiner, TimeZone, etc.