Upgrade to Java 17 throws java.lang.RuntimeException: Error creating extended parser class: Could not determine whether class has already been loaded - runtimeexception

Question

I am using jtwig lib and the code was working fine but when we upgraded to Java 17, I am getting the below mention runtime exception.
Below is the method and throws RuntimeException while calling template.render()
String renderDescription(String templatePath,String userId, String caseId) {
JtwigTemplate template =
JtwigTemplate.classpathTemplate(templatePath);
JtwigModel model = JtwigModel.newModel()
.with("userId", userId)
.with("caseId", caseId)
.with("statusPageUrlTemplate",
config.getStatusPageUrlTemplate());
return template.render(model);
}
java.lang.RuntimeException: Error creating extended parser class: Could not determine whether class 'org.jtwig.parser.parboiled.base.BooleanParser$$parboiled' has already been loaded
at org.parboiled.Parboiled.createParser(Parboiled.java:58)
at org.jtwig.parser.parboiled.ParserContext.instance(ParserContext.java:31)
at org.jtwig.parser.parboiled.ParboiledJtwigParser.parse(ParboiledJtwigParser.java:37)
at org.jtwig.parser.cache.InMemoryConcurrentPersistentTemplateCache.get(InMemoryConcurrentPersistentTemplateCache.java:39)
at org.jtwig.parser.CachedJtwigParser.parse(CachedJtwigParser.java:19)
at org.jtwig.JtwigTemplate.render(JtwigTemplate.java:98)
at org.jtwig.JtwigTemplate.render(JtwigTemplate.java:74)

Answer 1

I was facing a similar issue after upgrading JVM version, and I found that adding this environment variable helped:
JDK_JAVA_OPTIONS=--add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.time=ALL-UNNAMED
I believe it has something to do with stricter default limits on reflection when trying to inspect built-in classes.