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https://github.com/pditommaso/groovy-java21-poc
https://github.com/pditommaso/groovy-java21-poc
Last synced: about 1 month ago
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- Host: GitHub
- URL: https://github.com/pditommaso/groovy-java21-poc
- Owner: pditommaso
- Created: 2024-05-27T15:03:29.000Z (8 months ago)
- Default Branch: master
- Last Pushed: 2024-05-28T12:48:26.000Z (8 months ago)
- Last Synced: 2024-05-29T05:49:56.617Z (8 months ago)
- Language: Groovy
- Size: 48.8 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# Groovy @Delegate issue with target compatibility Java 11
Context: Java 21 introduces a new interface [SequencedCollection](https://bugs.openjdk.org/browse/JDK-8266572)
as super-interface for `List` and other interfaces.
This causes an issue in Groovy when the following conditions are met:
1. Using a `@Delegate List someAttribute` in a class
2. Compile with Java 21
3. Run with Java 20 or earlier the resulting app.
#### Replicate the issue
1. Compile and run
```
./gradlew run
```
Output:
```
Runtime: Groovy 4.0.21 on OpenJDK 64-Bit Server VM 21.0.3+9-LTS
Plain list sub-class: [1, 2, 3]
Delegate list class : [1, 2, 3]
```
2. Setup Java 11
```
sdk use java 11.0.14-zulu
```
3. Run the app with Java 11
```
bash run.sh
```
Output:
```
Runtime: Groovy 4.0.21 on OpenJDK 64-Bit Server VM 11.0.14+9-LTS
Plain list sub-class: [1, 2, 3]
Exception in thread "main" java.lang.NoClassDefFoundError: java/util/SequencedCollection
at org.example.App.run(App.groovy:18)
at org.example.App.main(App.groovy:22)
Caused by: java.lang.ClassNotFoundException: java.util.SequencedCollection
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
... 2 more
```
### Links
* [Groovy issue](https://issues.apache.org/jira/browse/GROOVY-11389)