This Annex to the Java SE 21 Specification contains the Java SE 21 Editions of The Java Language Specification (JLS) and The Java Virtual Machine Specification (JVMS).
The Java SE 21 Editions include corrections and clarifications made to the JLS and JVMS since the Java SE 20 Editions, that is, since the Final Release of JSR 395. These changes are flagged with vertical bars and colorful text, as follows:
The Java SE 21 Platform includes two final and permanent features that were preview features in Java SE 20:
switch
In the Java SE 21 Edition of the JLS, these changes are flagged with vertical bars and purple text.
The Java SE 21 Platform includes three preview features whose specifications are logically part of the Java SE 21 Editions of the JLS and JVMS, but are physically distributed in standalone documents:
main Methods
(Preview)