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

Guava is a suite of core and expanded libraries that include

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

Apache Commons Lang, a package of Java utility classes for the classes that are in java.lang's hierarchy, or are ...

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

JMockit is a Java toolkit for automated developer testing.

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