001-Numbers

To follow this first session, please install Java 9 on your machine:

http://www.oracle.com/technetwork/java/javase/down...

Then open a command prompt (or terminal) and type java -version and press enter/return. You should see something similar to this:

java version "9.0.1"
Java(TM) SE Runtime Environment (build 9.0.1+11)
Java HotSpot(TM) 64-Bit Server VM (build 9.0.1+11, mixed mode)

If you see a different version, then your path is most likely wrong. If you don't know how to fix that, please ask someone :-)

Once that works, type jshell and press enter/return. You should see something similar to this:

| Welcome to JShell -- Version 9.0.1
| For an introduction type: /help intro

jshell>

You are now ready to get going. Once you've had enough, type /exit and jshell will close.


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