So the original case had claims against copying more of the original Sun JVM code than just the API--the entire furor over "rangeCheck" was a key part of the original case. By the first appeal, this was reduced to a de minimis claim of copyright and Oracle no longer pursued claims of copyright on anything but the API.
My understanding is that all of the APIs in question are shared between the (now-Oracle) JVM and the OpenJDK implementation. (Indeed, I think the actual implementation of the Java code in question is the same between the closed and open source versions, it's only the JVM itself that differs.)
My understanding is that all of the APIs in question are shared between the (now-Oracle) JVM and the OpenJDK implementation. (Indeed, I think the actual implementation of the Java code in question is the same between the closed and open source versions, it's only the JVM itself that differs.)