Does the string "Java/1.8.0_112" in httpclient log messages indicate the running JDK, or what it was compiled against?

[KARR, DAVID]

I'm trying to track an issue with JDK versions being used with our code. In our log messages, we're seeing strings with the following contents: "Apache-HttpClient/4.5.3 (Java/1.8.0_112)". Does the reference to the JDK version there indicate the version of the JDK at runtime, or the version of the JDK that compiled the httpclient artifact (or perhaps something else)?

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[Brian Fox]

In my experience it's the version of the JVM running the application making
the request.

Post by KARR, DAVID
I'm trying to track an issue with JDK versions being used with our code.
"Apache-HttpClient/4.5.3 (Java/1.8.0_112)". Does the reference to the JDK
version there indicate the version of the JDK at runtime, or the version of
the JDK that compiled the httpclient artifact (or perhaps something else)?
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