Starting with Java 9 that changed: above the package now is the module. The module collects related packages together. The Java Platform Module System ... modules, as the JDK and its classes ...

The extension directory is now treated as a separate layer in the module system ... be the platform class loader. Note that in Java 9 and later versions, it is recommended to use modules instead ...

A Jigsaw module is a collection of Java classes ... the JDK source code into modules. JEP 220: Modular Run-Time Images restructures the JDK and JRE run-time images to accommodate modules. JSR 376: ...

In the case of the Java Platform Module System (JPMS), the past has most certainly ... try JPMS for their projects and fall back to the old non-modular system pretty early because the modules aren't ...