Verify using either or both of these:
jarsigner -verify modular-5.0.jar
shasum -a 256 modular-5.0.jar
SHA-256 checksum:
9be3eca4409579eda451a90052d19d958c919d55a4e4e20d183894560df9024f
Run from the command line using any of these:
mvn javafx:run
java -p /path/to/javafx-sdk-17.0.7/lib:target/modular-5.0.jar -m modular/org.example.ModularApp
mvn javafx:jlink ; ./target/modular/bin/modular