OHC since 0.7.1 can be built from source using Java 11 or newer (tested with Java 11 + 15). OHC runs against Java 8 and newer.
`
mvn clean install -DskipJmh
`
-DskipJmh skips running the microbenchmarks
Unit tests are run against the Java 8 only classes first. Another run will include the Java 11 classes.