All software fully updated. On Bootcamp is Windows 10, 64bit version, fully updated as well. - I need to install Java on this Windows partition, but fail to do so: ...

If you want to download and install Java JDK 18 on Windows 11/10 computer, you will also have to set up a Path in Environment Variable.

The Java JDK (Java Development Kit) is a software development environment that creates Java applications.

To check which version of Java you have on your Windows computer, you'll need to open the Command Prompt.