https://github.com/openjdk/jdk21u-dev/pull/822
https://openjdk.org/projects/jdk-updates. Contribute to openjdk/jdk21u-dev development by creating an account on GitHub.
testjavaxswingjframefailed
https://docs.oracle.com/javase/jp/11/docs/api/java.desktop/javax/swing/JFrame.html
java sejframejdk
https://docs.oracle.com/en/java/javase/11/docs/api/java.desktop/javax/swing/JFrame.html
java sejframejdk