Ant <script> task failing with GraalJS after migrating to Java 17

[sasirekha98]

Hi Everyone,

I am currently using Apache Ant 1.10.12 and migrating my Java application to Java 17. I have the following jars in my classpath:

1. js-scriptengine-22.3.1
2. graal-sdk-22.3.1
3. icu4j-71.1
4. js-22.3.1
5. regex-22.3.1
6. js-scriptengine-24.0.0
7. truffle-api-22.3.1
8. js-launcher-22.3.1

However, when running my Ant build, I get the following error:
C:\Users\skumaran\AppData\Local\Temp\antinstall5\build.xml:1282: javax.script.ScriptException: JavaScript implementation not found!
at com.oracle.truffle.js.scriptengine.PlaceholderScriptEngine.error(PlaceholderScriptEngine.java:150)
at com.oracle.truffle.js.scriptengine.PlaceholderScriptEngine.eval(PlaceholderScriptEngine.java:124)
at java.scripting/javax.script.AbstractScriptEngine.eval(AbstractScriptEngine.java:262)
at org.apache.tools.ant.util.optional.JavaxScriptRunner.evaluateScript(JavaxScriptRunner.java:154)
at org.apache.tools.ant.util.optional.JavaxScriptRunner.executeScript(JavaxScriptRunner.java:86)
at org.apache.tools.ant.taskdefs.optional.Script.execute(Script.java:53)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:299)
at jdk.internal.reflect.GeneratedMethodAccessor7.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:99)
at org.apache.tools.ant.Task.perform(Task.java:350)
at org.apache.tools.ant.Target.execute(Target.java:449)
at org.apache.tools.ant.Target.performTasks(Target.java:470)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1401)
at org.apache.tools.ant.helper.SingleCheckExecutor.executeTargets(SingleCheckExecutor.java:36)
at org.apache.tools.ant.Project.executeTargets(Project.java:1264)
at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:437)
at org.apache.tools.ant.taskdefs.CallTarget.execute(CallTarget.java:106)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:299)
at jdk.internal.reflect.GeneratedMethodAccessor7.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:99)
at org.apache.tools.ant.Task.perform(Task.java:350)

I am not sure why the engine is going to PlaceholderScriptEngine instead of GraalJSScriptEngine.

The ant task I am trying to run for testing is

Can someone explain what I might be missing or doing wrong?