Kotlin inline class

Possible values are 1.6, 1.8, 9, 10, 11, 12, 13 and 14. The default value is 1.6. Yes, it fully supports Java 11 .

Do you know if kotlin is already supported by java 14 ? Yes, it is . You can use 13 on compiler without any issue.

By default, the Kotlin/JVM compiler produces Java 8 compatible bytecode. If you want to make use of optimizations available in newer versions of Java, you can explicitly specify the target Java version from 9 to 17.11 Oca 2022