The repository is dedicated to the features available in Java 19 version. The examples uses command line and are based on the OpenJDK 19 relase
# compile examples
$ javac --release 19 --enable-preview -g -classpath out -sourcepath src -d out <JEP_FOLDER>/src/*.java
# run
$ java --enable-preview -classpath out <EXECUTABLE_CLASS>
# with JFR recording
$ java --enable-preview -classpath out -XX:StartFlightRecording=settings=profile,filename=some_recording_file.jfr <EXECUTABLE_CLASS>