jshell depends on some windows registry?

[Robert Field]

Hi Max,

There is no concept of "installing" jshell beyond having JDK9 installed.

The jshell tool uses the Java Preferences API, which seems to be failing 
in this case -- the Preferences API uses platform specific functionality 
to save/restore preferences.

I don't know the specifics of how it works on different platforms -- 
anybody have an idea what is going on here?  We may need to file a 
Preferences bug.

Just to be sure everything is lined up right, can you do:

     java -fullversion

     jshell -fullversion

Thanks,
Robert


On 05/03/2016 09:32 PM, Weijun Wang wrote:
> I copied the images to my own computer (without running any installer) 
> and running jshell in jdk9/b116 shows this
>
>  $ jshell
> May 04, 2016 12:30:25 PM java.util.prefs.WindowsPreferences <init>
> WARNING: Could not open/create prefs root node Software\JavaSoft\Prefs 
> at root 0x80000002. Windows RegCreateKeyEx(...) returned error code 5.
> |  Welcome to JShell -- Version 9-ea
> |  For an introduction type: /help intro
>
> jshell>
>
> Then if I enter anything, it just hangs forever.
>
> Must I install it? What if I am building my own jdk?
>
> Thanks
> Max