[Improvement]: Recommend/Warn Java 8 for older Minecraft versions in script about serverpackcreator HOT 8 OPEN

Heya Kreezxil,

ohhhh so now we have the reverse situation at hand, did I understand that correctly?
Whereas before we have people trying to run newer packs with older Java versions, people are now trying to run older packs with newer Java versions?

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Related to this: #445
The aforementioned issue talks about people running server packs with older Java versions and whether we have a way to capture / check / prevent and maybe inform the user in an easy-to-understand way.

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Yes, apparently this is the UNO reverse card.

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Heya Kreezxil,

if I remember correctly, you usually have multiple Java installations available on your machine. I'd like some feedback from people's environments other than my own (sanity check). Could you run the following command and post the return from it here?

which -a java | xargs -I{} echo "echo {};{} -version;echo" | sh

It should list all Java installations available in the system path and print their versions. Trying to determine whether that would be a viable way to discover available Java installations in a bash-script.

Cheers

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I've actually done a Linux reset since talking about that, because I experimented way too much, however, I have java in two locations and your command produced the following output.

/usr/bin/java
openjdk version "17.0.10" 2024-01-16
OpenJDK Runtime Environment (build 17.0.10+7)
OpenJDK 64-Bit Server VM (build 17.0.10+7, mixed mode)

/usr/lib/jvm/default/bin/java
openjdk version "17.0.10" 2024-01-16
OpenJDK Runtime Environment (build 17.0.10+7)
OpenJDK 64-Bit Server VM (build 17.0.10+7, mixed mode)

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Thanks for the feedback.
That looks like the command found the symlink (1st one) as well as the actual installation (2nd one).

I'll run some more tests on my end soonish.

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I responded too quick, I check my /usr/lib/jvm and it did not detect my other installations of Java 8 and Java 22.

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Java checks are available as of https://github.com/Griefed/ServerPackCreator/releases/tag/6.0.0-alpha.3

Checks are based on the info from MultiMC and the info Chorb posted somewhere, as in MC 1.16 and older can use Java 8 and 11, everything else has a "minimum required" check.

This should aleviate at least a portion of problems on the users side for their Java version.

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