Fastjson is a JSON processor (JSON parser + JSON generator) written in Java

Guava is a suite of core and expanded libraries that include

Reactive Extensions for Java

JUnit Jupiter is the API for writing tests using JUnit 5.

MySQL Connector/J is a JDBC Type 4 driver, which means that it is pure Java implementation of the MySQL protocol and ...

The Derby client JDBC driver, used to connect to a Derby server over a network connection.

The core Java API for building stream processing applications with Apache Flink.

PostgreSQL JDBC Driver Postgresql

SQLite JDBC is a library for accessing and creating SQLite database files in Java (it includes native libraries)