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

Learning Based Java

The Apache Commons IO library contains utility classes, stream implementations, file filters,

Core classes of Apache Maven to manage the building process.

The API for Maven 3 plugins - Mojos - development.

A collection of various utility classes to ease working with strings, files, command lines and

Java annotations to use in Mojos

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