Along with nesting, Java uses packages to resolve same-name issues in top-level reference types. Using static imports also simplifies access to the static members in packaged top-level reference ...

In the package directive’s absence, those classes and interfaces belong to the unnamed package (the directory the JVM regards as the current directory—the directory where a Java program begins ...

Canonical has announced that OpenJDK 11 has become the default Java package on Ubuntu 18.04 LTS, replacing OpenJDK 10. The move comes days after Red Hat announced its stewardship of OpenJDK 11.