Create packages, import packaged classes and interfaces into your programs, move packages, and encapsulate them in jar files.

Use Java's packages and static imports to organize top-level types and simplify access to their static members.

There are over 40 functional interfaces listed in the java.util.functions package, which can make the prospect of functional programming in Java a somewhat daunting task.

However, Java 13 does also bring dynamic class-data sharing archives, memory improvements, and a new implementation of the Java sockets application programming interface.