Java SE 13 was released in September 2019. The full list of new features in JDK 13 can be found here: https://openjdk.java.net/projects/jdk/13/ In this tutorial, we will look over some of these new features and examine some of them. 1. JEP 350: Dynamic CDS Archives Application Class Data Sharing was introduced with JEP 310, Java 10. It allows class loaders to load archived classes with a pre-generated class-data archive file and improves the startup performance.  JEP-350 simplifies the generation of CDS archive files directly from the archive file, instead of providing a list of classes. Create a CDS archive file of a jar file: java -XX:ArchiveClassesAtExit=myapp.jsa -cp myapp.jar MyApp Run a jar file with an existing CDS archive file: java -XX:SharedArchiveFile=myapp.jsa -cp myapp.jar MyApp 2. JEP 351: ZGC: Uncommit Unused Memory Performance improvement for the new ZGC collector introduced in Java 11 with JEP 333. With this JEP, unused heap memory is now being returned to the operatin