Jump to content

[1.16.5] Nashorn script engine issue...


OreCruncher

Recommended Posts

In my code I get an script engine reference:

this.engine = new ScriptEngineManager().getEngineByName("JavaScript");

 

When using Java 8 (1.8.0_232 by AdoptOpen),  with Forge 36.x it will fail with:

java.lang.UnsupportedClassVersionError: org/openjdk/nashorn/api/scripting/NashornScriptEngineFactory has been compiled by a more recent version of the Java Runtime (class file version 53.0), this version of the Java Runtime only recognizes class file versions up to 52.0

 

When using Java 15, it works.  I had code prior that used the Nashorn package explicitly that was present in Java 8, and that was working.  I am trying to generify so that my mod can be used with later versions of Java, and I am hoping to have a single mod release that works with 1.16.4 as well as 1.16.5 since, well, MC 1.16.5 is bug fix release and is wire compatible with 1.16.4.

 

The questions I have are:

1. Is it even possible to use Forge 36.x with Java 8 and obtain a JavaScript engine reference using a generic factory method?

2. Is there a 1.16.4 Forge release that has the Nashorn engine that I could reference to bridge this gap?  I see from the change log that there was some work in Forge 35, but I do not see the downloads available.  (I am assuming this is intentional to encourage folks to move to 1.16.5.)

3.  Am I even looking at this issue correctly?  It's possible I am working from some bad assumptions.

 


 

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Unfortunately, your content contains terms that we do not allow. Please edit your content to remove the highlighted words below.
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Announcements



×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.