Hey. https://s2geometry.io/ indeed also mentiones a Java port, but the one at https://github.com/google/s2-geometry-library-java and not what you said you'd have used (https://github.com/io-sgr/s2-geometry-library-java ?)
But even the "official" Google port to Java is listed only as "Ported Subset". With Emmanuel doing the C++/Python reference implementation in #962686, may I suggest the following: Neither of the two packages uses https://s2geometry.io/ as homepage field, but the github address of the project. https://s2geometry.io/ seems to be anyway rather a "general" page about the S2 system, less about specific implementations. Cheers, Chris. PS: Wouldn't it make sense for s2-geometry-library to switch to the google port https://github.com/google/s2-geometry-library-java and perhaps also name the sourcepackage accordingly (s2-geometry-library- java)? The google one seems to still get commits, the other one hasn't seen commits since 2019.