Make sure that the following properties for the H2 DB are present
spring.datasource.db-hqhb-task.datasource.driverClassName=org.h2.Driver
spring.datasource.db-hqhb-task.jdbcUrl=jdbc:h2:mem:testdb\DB_CLOSE_ON_EXIT\=FALSE;spring.datasource.db-hqhb-task.datasource.driverClassName=org.h2.Driver
To execute:
java -jar target/tdemo-1.0.0.BUILD-SNAPSHOT.jar