Azul Zulu JDK 21

Azul Systems, Inc. · Azul’s OpenJDK Java 21 development kit for compiling and running Java applications on Intel and Apple Silicon Macs.

CaskLanguages & RuntimesApple silicon · Intel

From homebrew/cask

30-day installs1,197#145 in App

1-year installs10.9KLast 365 days

Latest version21.0.12.15 days ago · Oct 7

Download size208MBarm64 / x86_64 · dmg

Release cadenceIrregular0 releases in 30 days

21.0.12.1
LatestPatchAug 18 · Tue
OpenNavo editorialAdded to Homebrew Aug 18 23:05
August security update for Java 21, including resource-resolution, HTTP-connection and TLS-server fixes.
Version
Maps OpenJDK 21.0.12.1+1 to Azul Zulu 21.52.203 CA.Is a monthly Critical Security Patch Update on the July PSU line.
Security
JDK-8382471 improves resource resolving for Java 21.JDK-8384708 enhances HTTP connections for Java 21.JDK-8386205 enhances the TLS server for Java 21.
21.0.12
PatchJul 22 · Wed
OpenNavo editorialAdded to Homebrew Jul 22 12:14
July quarterly PSU updates Java 21 and adds certificate-revocation-list size limits alongside security fixes.
Version
Maps OpenJDK 21.0.12+8 to Azul Zulu 21.52.15 CA.
Certificates
JDK-8381796 adds a configurable size limit for downloaded CRLs.The default CRL limit is 20 MiB; oversized CRLs are discarded.
Runtime
Retires the embedded Connected Runtime Service agent in PSU builds.
21.0.11
PatchApr 21 · Tue
OpenNavo editorialAdded to Homebrew Apr 21 23:57
April quarterly PSU updates Java 21 certificate and reference handling, time-zone data and Mac archive layout.
Version
Maps OpenJDK 21.0.11+10 to Azul Zulu 21.50.19 CA.
Runtime
JDK-8348014 enhances certificate processing.JDK-8350692 enhances Java 21 reference handling.Includes IANA time-zone data 2026a.
Mac Layout
Simplifies extracted Mac bundle layout to Contents/Home.The documented directory change does not affect DMG installations.