Jupyter Java console

You can run Jupyter in console mode, meaning that command lines can be entered directly rather than in a new Notebook in a browser. The command is as follows:

jupyter console --kernel=java

This means that you can start Jupyter in a console window using the Java kernel. We will see a window like the following one, where we can enter some Java code:

Odd interface lines of the command-line interface screen react as if they are part of a Notebook:

String hello = "Hello, Dan" 
hello 

But this is not normal Java. There are no semicolons at the end of lines. Semicolons are optional for single-line Java statements.

Also, the single line hello is just the reference to the hello variable. I am not sure what is causing this to echo into the output.

 

We can extract this snippet into a Java Notebook with similar results: