API that allows Java programs to interoperate with low-level languages like C in some low-level

Declaration of interfaces and annotations for MyJava metaprogramming

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

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

Mockito mock objects library core API and implementation

PowerMock support module for JUnit 4.x.

PowerMock API for Mockito 2.+..