Question: I have some code which captures a key.

Now i have in event.code the real key-name and in event.key i get the key-char.
To make an example: I press SHIFT and J, so i get:
*event.code: SHIFT KEYJ*
*event.key: J*

So, i get in event.key the "interpreted key" from shift J. But now i need to convert the native key to a char. So i am looking for a solution to get from "KEYJ" to a char, that means "j". How can this be done? I have not found anything about this.

Answer: 
Solution was the H2 version.
We upgraded also H2 to 2.0 but that version is not compatible with Spring Batch 4.3.4.
Downgrade to H2 version 1.4.200 solved the issue.
`MODE=LEGACY` will solve the issue on H2 2.x with Spring boot 2.6.x.
(`nextval` support will be re-enabled)

See the details: <https://github.com/spring-projects/spring-boot/issues/29034#issuecomment-1002641782>