New for Java 9: jshell

There were ways to do this previously but it will be great to have this as part of "official" Java. I have got good results in the past from adding a REPL interface to long-running servers.

Requiring functions to declare their exceptions in the REPL seems like an odd decision though (particularly given that the shell will automatically catch exceptions). I wonder why they didn't just assume "throws Exception" or even the actual thrown Exception, given that they are able to infer it and these functions won't be overridden.

...does this mean no more Beanshell? :D

How are the crypto libraries in the "new" Java versions? I've heard pretty bad stuff about the default security configurations in Java.