At least on Ubuntu 20.04 and using Java 11 building fails with:
[INFO] --- maven-antrun-plugin:1.8:run (default) @ jcardsim ---
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 6.930 s
[INFO] Finished at: 2020-05-29T10:17:24+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-antrun-plugin:1.8:run (default) on project jcardsim: Execution default of goal org.apache.maven.plugins:maven-antrun-plugin:1.8:run failed: Plugin org.apache.maven.plugins:maven-antrun-plugin:1.8 or one of its dependencies could not be resolved: Could not find artifact com.sun:tools:jar:1.5.0 at specified path /usr/lib/jvm/java-11-openjdk-amd64/../lib/tools.jar -> [Help 1]
...which under Java 11 don't exist any more
At least on Ubuntu 20.04 and using Java 11 building fails with: