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It should be noted that AdoptOpenJDK does not run the TCK against these binaries so they can not be called a compatible Java implementation.

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The TCK is not open, it isn't governed by a standards body, the TCL is completely in Oracle's control.

If Java is to evolve as an open platform, it needs to break free from the TCK that disallowed Apache Harmony to exist.

We don't need it and an independent TCK could be developed.

Yet any other OpenJDK distribution from Alibaba, Amazon, Azul, BellSoft, RedHat, SAP (I probably forgot some) all run the TCK. All except AdoptOpenJDK. And whenever you bring that up the only response is ranting about the TCK.

No ranting from us :-). We've not been granted access to the TCK and we continue to hold an open dialogue with Oracle on this. We hope to get this resolved down the line!

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