google/guava

Guava is a set of core Java libraries from Google that includes new collection types (such as multimap and multiset), immutable collections, a graph library, and utilities for concurrency, I/O, hashing, primitives, strings, and more! It is widely used on most Java projects within Google, and widely used by many other companies as well. Guava comes in two flavors: The JRE flavor requires JDK 1.8 or higher. If you need support for Android, use the Android flavor. You can find the Android Guava source in the [android directory]. [android directory]: https://github.com/google/guava/tree/master/and…