What does LTS mean for OpenJDK?

Andrew Haley aph at redhat.com
Fri Aug 17 17:33:08 UTC 2018

On 08/17/2018 05:36 PM, Stephen Colebourne wrote:
> The LTS (long term support) release Java 11 is nearly upon us. But
> what does LTS mean in the context of OpenJDK? I'd like to try to get a
> clear statement of fact in written form, particularly from Oracle.

I have been discussing with some other organizations sharing the
burden of supporting jdk11, and we'll make a public statement when
we're ready.  Before then, I'll say what I can.

OpenJDK is a community project. It's up to the community to support
it. In practice this means that a group of organizations and
individuals will maintain each OpenJDK LTS release for some period
(TBA for 11, but it's sure to be a *lot* longer than six months.) I am
certain that there will be a jdk11u project, and it will be properly
and professionally run. I think it's likely that I'll be leading the
project, but someone else may be chosen. Given that we don't know when
Oracle will end their support it's hard to say any more.

> Java 10 has had public $free support, with two security updates over 6
> months and pre-built binaries at http://jdk.java.net/10/
> What will Java 11 get from Oracle?
> - 6 months of public $free updates with binaries published at
> http://jdk.java.net
> - 3 years of public $free updates with binaries published at http://jdk.java.net
> - something else?
> Note! The request is about $free pre-built binaries ready for
> download. We all know people can pay money for support to multiple
> vendors.
> Is any other group (eg. AdoptOpenJDK, RedHat) planning on providing
> security patched pre-built binaries for $free? If so, for how long?

Red Hat is committed to support OpenJDK for its customers for some
time. Our policy for current versions can be seen at

Given that Red Hat has an upstream first policy, we will make sure
that all security patches are applied to upstream OpenJDK releases and
our builds are TCK'd.

With regard to providing binaries, I'm aware that any jdkll update
project after Oracle ceases to support it will need to provide
binaries for several platforms. (java.net is Oracle's proprietary
site, so it doesn't make any sense to put them there.) The project
will decide exactly where to put those binaries, but in my opinion as
long as they are properly authenticated and easy to get it doesn't
really matter.

Finally, please let me assure you of one thing: whether by Oracle or
Red Hat or someone else, JDK LTS releases will continue to be
supported. We all have a lot invested in Java, and we won't let it

> Please provide links.


Andrew Haley
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
EAC8 43EB D3EF DB98 CC77 2FAD A5CD 6035 332F A671

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