formerly I could use

/classpath ~/Dropbox/Vortrag/ParallelStreams/ParallelStreams/target/ParallelStreams.jar
| Path '~/Dropbox/Vortrag/ParallelStreams/ParallelStreams/target/
       ParallelStreams.jar' added to classpath
jshell> import de.muellerbruehl.parallelstreams.PersonManager

SInce this has become /env, I have trouble with it:

jshell> /env -class-path ~/Dropbox/Vortrag/ParallelStreams/ParallelStreams/target/ParallelStreams.jar
| Setting new options and restoring state.

jshell> /env
| --class-path ~/Dropbox/Vortrag/ParallelStreams/ParallelStreams/target/ParallelStreams.jar

jshell> import de.muellerbruehl.parallelstreams.PersonManager
| Error:
| package de.muellerbruehl.parallelstreams does not exist
| import de.muellerbruehl.parallelstreams.PersonManager;
| ^--------------------------------------------^

Although /env displays the added classpath, it is not recognized.
To add a classpath, I have to leave the shell and restart it with the classpath option.
--

Herzliche Grüße - Best Regards,

Michael Müller

=================

Cause: This is a tilde (~) expansion issue. The shell is expanding it. But not jshell.