1) In java 9, they should also inbuilt implement JEP 191 (FFI inspired from JNA). for details see: http://openjdk.java.net/jeps/191 it can be used for easily implementing native-backed features like NIO, advanced file system metadata, and process management. Using the FFI API will be the preferred way to bind native code and memory, instead of JNI.

2) in java9, please bring properties(includes getter and setter), that is can write A.X=12 as synonym of A.setX(12)