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- Debian's OpenJDK 8 as supplied under Debian 9 "stretch"
- Debian's OpenJDK 11 as supplied under Debian 10 "buster"
Other Java distributions that are substantially identical or meant to be fully compatible with OpenJDK 8 or 11 are of course likely to work, but are officially regarded as unsupported to limit the range of environments we need to be able to reproduce problems under to a manageable set.
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