Core annotations used for value types, used by Jackson data binding package.

Guava is a suite of core and expanded libraries that include

The Apache Commons Collections package contains types that extend and augment the Java Collections Framework.

Jakarta Annotations API

Joda-Time provides a quality replacement for the Java date and time classes. Note that from Java SE 8 onwards, users ...

Provides utility goals to work with dependencies like copying, unpacking, analyzing, resolving and many more.

Core Jackson processing abstractions (aka Streaming API), implementation for JSON

Functional Java is an open source library that supports closures for the Java programming language

The BSON library

Basic building block for Spring that in conjunction with Spring Beans provides dependency injection and IoC features.