Scoreboard does not recognise OpenJDK JRE

[Tokoeka]

Describe the bug
I have a version of the adoptium JDK installed which includes a JRE. However, every time I have tested, I cannot get the Derby Scoreboartd to run without also installing the Oracle JRE.

To Reproduce
Steps to reproduce the behavior:

1. Uninstall Oracle JRE (or get a computer that does not have it installed)
2. Install the Adoptium JRE/JDK ( https://adoptium.net/en-GB/temurin/releases/ )
3. Try to run Derby Scoreboard
4. Scoreboard pop-up window appears indicating there is an error and that you dont have Java installed

Expected behavior
Scoreboard would run provided a version of Java was installed that was greater than the minimum required Oracle version.

Screenshots

Version:
2023.3 & 2023.7

If this issue occurred on a computer, please complete the following information:

• Windows 10 Pro N
• firefox (though not applicable as scoreboard did not progress far enough)

[frank-weinberg]

Apparently the windows loader does not recognize the specific JRE as sufficient but the output doesn't give any indication as to why. I don't have windows so have no way to debug this (or build a new loader).

[JeneralPain]

@frank-weinberg - I'll see if I can replicate this on a windows VM I'll setup and make some sense of the error.

[official-sounding]

This appears to be a launch4j bug - basically, l4j looks only at the windows registry to find a Java install. You would probably need to update the vendored version of l4j and re-run the launch4j ant task to rebuild the windows runner. That appears to be a cross-platform operation - it relies on windres which is in GNU binutils.

Also the state of self-contained java packages is much improved from the early-00s, so something like self-contained packages might be a better replacement (with the potential bonus of also packaging the JRE with the app, avoiding whole classes of Java incompatibility issues, allowing adoption of modern Java features, etc)

[ryanpowers]

I can update this post when I’m at my personal computer (with scoreboard installed), but I was able to take the Linux startup script and turn it into a batch file to launch with whatever JVM is specified in the batch (I believe I just invoke java). It’s a workaround, and the batch file could probably be included in the package and will probably work in most situations where the default Windows launcher doesn’t.