Oracle JDK 21 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Supported
Oracle JDK 21 is actively supported. It reaches end of life on 30 Sept 2028.
726 days of security support left
21.0.12.1 latest release
61% of this branch's supported lifetime has elapsed — 19 Sept 2023 → 30 Sept 2028.
Check your versionjava -version
Support timeline
Official dates from the Oracle JDK release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 19 Sept 2023 | 3y 1mo ago |
| Premier Support ends | 30 Sept 2028 | in 2y |
| Extended Support ends | 30 Sept 2031 | in 5y |
| Latest release | 21.0.12.1 · 18 Aug 2026 | current |
How much runway a newer branch buys
Moving to Oracle JDK 27 extends security support by about -549 days.
| Branch | End of life | Days left | vs 21 |
|---|---|---|---|
| Oracle JDK 27 | 31 Mar 2027 | 177 | -549 days |
| Oracle JDK 25 | 30 Sept 2030 | 1,456 | +730 days |
| Oracle JDK 21 | 30 Sept 2028 | 726 | this branch |
Frequently asked questions
When does Oracle JDK 21 reach end of life?
Oracle JDK 21 reaches end of life on 30 Sept 2028 — 726 days from now. After that date it receives no security fixes.
Is Oracle JDK 21 still supported?
Yes. Oracle JDK 21 is currently maintained. Latest release: 21.0.12.1, published 18 Aug 2026.
What happens when Oracle JDK 21 reaches end of life?
Security fixes stop. After 30 Sept 2028 this branch receives no further updates under standard support, though extended support runs to 30 Sept 2031.
How long do I have to upgrade from Oracle JDK 21?
726 days. Moving to Oracle JDK 27 instead buys roughly -549 more days of security support.
All Oracle JDK versions
27 supported 26 EOL 2026 25 supported 24 EOL 2025 23 EOL 2025 22 EOL 2024 21 supported 20 EOL 2023 19 EOL 2023 18 EOL 2022 17 EOL 2026 16 EOL 2021 15 EOL 2021 14 EOL 2020 13 EOL 2020 12 EOL 2019 11 EOL 2023 10 EOL 2018 9 EOL 2018 8 EOL 2022 7 EOL 2019 6 EOL 2018 5 EOL 2009 1.4 EOL 2008 1.3 EOL 2006 1.2 EOL 2003 1.1 EOL 2002 1.0 EOL 1996