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No JavaScript Engine available. ScriptCraft will not work without Javascript. #452
Description
Hi i have this error when start server, it´s like sv doesnt find scriptcraft folder and doesnt recognize any javascript code. Error:
No JavaScript Engine available. ScriptCraft will not work without Javascript.
Activity
MrDoomBringer commentedon Nov 30, 2020
This is likely because your java version is greater than java 8.
You can check this by typing "java -version" into a command prompt.
Java versions greater than 8 will get this error because they don't come with javascript pre-installed anymore.
Personally, I have 2 JDKs installed, one for scriptcraft and one for everything else.
Whenever I want to run my scriptcraft server at the command prompt, I specify the right version of java by running this command:
in a powershell terminal. Note that I'm using the ` key to escape the space character in "Program Files".
quartze commentedon Dec 1, 2020
It's not working for me.
Still have the same error like author. "No JavaScript Engine available".
Using
jdk1.8.0_271.Note: you can write
Progra~1orProgra~2than Program` FIles.MrDoomBringer commentedon Dec 1, 2020
@quartze Hmm, weird. Just for sanity's sake, when you enter "C:\Progra~1\Java\jdk_1.8.0_271\bin\java -version" you get the expected version number, right?
In that case, I would try uninstalling and reinstalling java? Not certain what your issue might be if it still persists.
MrDoomBringer commentedon Dec 25, 2020
@Tacoalarmclock well you're using openJDK, rather than oracle's normal jdk. That might be your problem (as although OpenJDK and oracle's jdk are functionally the same, I don't know if OpenJDK comes with javascript prepackaged as well)
MangoSwirl commentedon Jan 7, 2021
I'm having the same issue. How could I compile this myself?
jwulf commentedon Jan 8, 2021
There is a build in the zip file release here: https://github.com/Magikcraft/MagikCraft/releases
spustlik commentedon Jun 20, 2021
As I poorly understand java, problem is that Spigot server needs at least java 16, but javascript engine (Nashorn) was removed in java 15.
I have no idea how to solve it
ediloren commentedon Aug 27, 2021
I patched ScriptCraft to work with GraalVM with the GraalJS JavaScript engine.
Tested under Win10, GraalVM R21.2.0, SpigotMC R1.17.1.
You may try it using the fork https://github.com/ediloren/ScriptCraft. Includes instructions in the updated 'ReadMe'.
willmil11 commentedon Jun 26, 2023
Everyone youll not regret it to fix that use java 8.0.302-open you can install with sdkman
joaoalbertocsjunior commentedon Jul 31, 2023
Reinstall spigot server with command:
java -jar -Xmx1G -Djdk.net.URLClassPath.disableClassPathURLCheck=true BuildTools.jar --rev 1.16.5
openjdk-8-jdk needed
FreshImmuc commentedon Oct 6, 2024
Hey @ediloren I tried the alreadx existent jar in your repository's target folder. It doesn't work. Then i tried building it myself but some issues occured. I added asm libs to it and built it successfully. But even with building your repo myself i didn't get it to work. Is there any chance you still have the working jar yourself?
ediloren commentedon Oct 8, 2024
@FreshImmuc I'm sorry but my fixes were done a long time ago; I expect they do not work today, as probably more patches are needed. Although interesting, I do not have the time to follow the project anymore.