Compile on Java 8, run on Java 11

gistfile1.txt

martijn@dhcp-10-175-42-124:/p/t/javatest$ cat Main.java
import sun.misc.Unsafe;
import java.lang.reflect.Field;

public class Main {
        public static void main(String[] args) throws Exception {
                Unsafe unsafe = getUnsafe();
                System.out.println("Page size = " + unsafe.pageSize());
        }

        public static Unsafe getUnsafe() throws Exception {
                Field f = Unsafe.class.getDeclaredField("theUnsafe");
                f.setAccessible(true);
                Unsafe unsafe = (Unsafe) f.get(null);

                return unsafe;
        }
}

martijn@dhcp-10-175-42-124:/p/t/javatest$ javac Main.java && java Main
Page size = 4096
martijn@dhcp-10-175-42-124:/p/t/javatest$ java11
martijn@dhcp-10-175-42-124:/p/t/javatest$ echo $JAVA11_HOME
/Library/Java/JavaVirtualMachines/jdk-11.0.2.jdk/Contents/Home
martijn@dhcp-10-175-42-124:/p/t/javatest$ java Main
Page size = 4096