The meaning of the java.vendor property?

Mathiske, Bernd mathiske at
Fri Dec 14 19:46:28 UTC 2018

Martin, Volker,

Many things for quickly providing these clarifying words! Going forward, I will be assuming that "vendor" means whoever built the distribution and that there is some intended differentiation in the values of "java.vendor" and "java.vm.vendor".


From: Martin Buchholz <martinrb at>
Date: Friday, December 14, 2018 at 5:52 AM
To: "Mathiske, Bernd" <mathiske at>
Cc: "core-libs-dev at" <core-libs-dev at>
Subject: Re: The meaning of the java.vendor property?

There's a configure flag for java.vendor (but not java.specification.vendor) which is a strong hint. 

  --with-vendor-name      Set vendor name. Among others, used to set the
                          'java.vendor' and 'java.vm.vendor' system
                          properties. [not specified]

On 12/14/18, 9:13 AM, "Volker Simonis" <volker.simonis at> wrote:

    Hi Bernd,
    from my understanding you can choose to freely set the following
    properties (and we do that for SapMachine, as you can see):
        java.vendor = SAP SE
        java.vendor.url =
        java.vendor.url.bug =
        java.vm.vendor = SAP SE
    The following "specification.vendor" properties have to show the Java
    SE spec lead (which currently is Oracle) so you shouldn't change them:
        java.specification.vendor = Oracle Corporation
        java.vm.specification.vendor = Oracle Corporation
    On Thu, Dec 13, 2018 at 11:14 PM Mathiske, Bernd <mathiske at> wrote:
    > I was wondering if it’s OK to modify the “java.vendor” system property as reported by System.getProperty() in our OpenJDK builds. Some binary OpenJDK distribution builders seem to be doing so, but others not. Is there a rule for this? The documentation does not seem exactly conclusive:
    > What is a “vendor” in this context? Is it always supposed to be “Oracle Corporation” to stay compatible? Or is it supposed to be whoever builds and packages the binaries so we can track the origin of the binary artifacts better?
    > Bernd

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