README.md

To Build the project

mvn clean install

To run the program

mvn exec:java

For schema creation and deletion

mvn datanucleus:schema-create
mvn datanucleus:schema-delete

NOTE

The same code is working with datanucleus version 5.x. Have created a separate branch named workingCase and attached the working screenshot as well

main branch: Java 17
workingCase branch: Java 8

Error StackTrace

While Debugging

Working Case with datanucleus 5.x