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Learning Jupyter 5

You're reading from   Learning Jupyter 5 Explore interactive computing using Python, Java, JavaScript, R, Julia, and JupyterLab

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Product type Paperback
Published in Aug 2018
Publisher
ISBN-13 9781789137408
Length 282 pages
Edition 2nd Edition
Languages
Tools
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Author (1):
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Dan Toomey Dan Toomey
Author Profile Icon Dan Toomey
Dan Toomey
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Table of Contents (14) Chapters Close

Preface 1. Introduction to Jupyter FREE CHAPTER 2. Jupyter Python Scripting 3. Jupyter R Scripting 4. Jupyter Julia Scripting 5. Jupyter Java Coding 6. Jupyter JavaScript Coding 7. Jupyter Scala 8. Jupyter and Big Data 9. Interactive Widgets 10. Sharing and Converting Jupyter Notebooks 11. Multiuser Jupyter Notebooks 12. What's Next? 13. Other Books You May Enjoy

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:

...
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