Questions about JShell

[Barry Burd]

1. I downloaded Version 0.710 from 
https://adopt-openjdk.ci.cloudbees.com/view/OpenJDK/job/langtools-1.9-linux-x86_64-kulla-dev/lastSuccessfulBuild/artifact/. 
I'm noticing behaviors that I suspect have been fixed. How far 
out-of-date is this version, and is a more recent version available as a 
.jar file?

2. I can't use the /open command to get an existing file? I always get 
the message that the file doesn't exist. Is this a known problem in 
Version 0.710 or is it possible that my syntax (/open filename, or /open 
"filename", or /open full-path) is incorrect?

3. I get two different behaviors when I modify a class that I've 
defined. If I change something non-structural (such as the initial value 
of a field) then the existing instances aren't reset to null. But if I 
make a structural change (such as deleting a field and creating a new 
field) then the existing instances are reset to null. Is this behavior 
intentional?

Thank you.