openjdk version "21.0.11" 2026-04-21 LTS
OpenJDK Runtime Environment Corretto-21.0.11.10.1 (build 21.0.11+10-LTS)
OpenJDK 64-Bit Server VM Corretto-21.0.11.10.1 (build 21.0.11+10-LTS, mixed mode, sharing)
javac 21.0.11
/var/folders/69/dwg4b48n54l79z0hv04311bw0000gn/T/tmp.pYXWC9q9sK/UnexpectedVariant.java:2: 错误: 类不得扩展密封类：Creation（因为它未列在其 'permits' 子句中）
public final class UnexpectedVariant implements Creation {}
             ^
1 个错误
