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https://issues.apache.org/jira/browse/GROOVY-11613?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17943922#comment-17943922
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Eric Milles edited comment on GROOVY-11613 at 4/13/25 1:19 PM:
---------------------------------------------------------------
Can you try this in Groovy 5? The "trait" in the error message suggests your
case is going through Groovy 4's emulation of interfaces with members via
traits. Groovy 5 does not convert interfaces to traits as an implementation
detail.
was (Author: emilles):
Can you try this in Groovy 5. The "trait" in the error message suggests your
case is going through Groovy 4's emulation of interfaces with members via
traits. Groovy 5 does not convert interfaces to traits as an implementation
detail.
> Cannot call on outerclass's default method if the inner class extends that
> outerclass
> -------------------------------------------------------------------------------------
>
> Key: GROOVY-11613
> URL: https://issues.apache.org/jira/browse/GROOVY-11613
> Project: Groovy
> Issue Type: Bug
> Components: Compiler, Static compilation
> Affects Versions: 4.0.24
> Reporter: Saravanan
> Priority: Minor
>
>
> {code:java}
> public interface Interfaces {
> default String myThing() {
> return "BLAHG"
> }
> // Groovy fails with Cannot have non-static inner class
> // inside a trait (com.org.interfaces.Interfaces$Inner)
> // Does not fare better if we add static. Works with abstract classes
> public interface Inner extends Interfaces {
> default String otherThing() {
> return myThing()
> }
> }
> } {code}
> The first error I get is that inner classes in a trait cannot be non static.
> But if I make it static, I get a null pointer exception looking for the trait
> helper class (because the trait's helper class was not created yet when
> parsing the inner class)
>
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