Upgrade Java to version 17 in Bulk

[ke4]

We are using a very outdated Java version: 11. It is an LTS version (Long-term support).
The next LTS versions are: 17 and 21.
Java version history: https://en.wikipedia.org//wiki/Java_version_history
Let's jump for now to version 17. That hopefully has less issues then directly jump to version 21.
Later we can create another ticket and jump further to version 21.

Here are some article that can support this change:

• Migrating a Project From Java 11 to Java 17: A Step-by-Step Guide for Developers
• It’s time to move your applications to Java 17. Here’s why—and how
• Every change between JDK 11 and the Java 17 LTS release