Questions about JShell

[Robert Field]

Hi Barry,

That build is I imagine a few days old. We haven't changed anything in the 
open command in a while. I'll check on the morning. What platform are you 
on? Can you cut and paste actual behavior along with a directory list command?

Yes, the difference in behavior in the two kinds of changes is intentional, 
or at least unavoidable. They correspond to changes that the Java Virtual 
Machine is capable of making while keeping the class, and thus the 
instances intact. Note that the tool calls these changes different things: 
Modified vs Replaced

Thanks for the report,
Robert



On July 17, 2015 10:13:01 PM Barry Burd <bburd at drew.edu> wrote:

> 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 out-of-date is this version, and is a more recent version available as a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.