This is a demo project to show some new features of Java™ 14.
It uses --enable-preview and Maven, but you don't need to have Maven installed.
To run this project, you need to have Java™ 14 installed. You can use https://sdkman.io/ and/or https://adoptopenjdk.net/.
If you'd like to run the example app, one of the options is this:
$ MAVEN_OPTS="--enable-preview" ./mvnw exec:java -Dexec.mainClass="org.przybyl.ddj14.App"
Understand: https://openjdk.java.net/jeps/343
$ ./mvnw package
$ cd target
$ cp ddj14-1.0-SNAPSHOT.jar lib/
$ jpackage --name DDJ14 --input ./lib --main-jar ddj14-1.0-SNAPSHOT.jar