According to the newest design discussion, that might be arriving with project Valhalla. https://mail.openjdk.org/pipermail/valhalla-spec-observers/2023-May/00

According to the newest design discussion, that might be arriving with project Valhalla. https://mail.openjdk.org/pipermail/valhalla-spec-observers/2023-May/002243.html https://mail.openjdk.org/pipermail/valhalla-spec-observers/2... But even if they do, I'm guessing that's still going to be a long ways away.