> There are not very many JDK implementations that don't have OpenJDK sources at their core. Well yeah, especially not open source, as you can't get a TCK for

> There are not very many JDK implementations that don't have OpenJDK sources at their core. Well yeah, especially not open source, as you can't get a TCK for non-OpenJDK open source implementations of the standard library. Oracle forbids it.