Leanpub Header

Skip to main content

Groovy Book

Groovy is one of the programming languages that runs on the JVM. Among many uses cases it is also the primary language used in Jenkins by DevOps engineers.

The author is letting you choose the price you pay for this book!

Pick Your Price...
PDF
EPUB
WEB
66
Pages
About

About

About the Book

The books is a collection of articles that will help you learn Groovy and to use it to your advantage.

Share this book

Price

Pick Your Price...

Minimum price

$7.99

$9.99

You pay

$9.99

Author earns

$7.99
$

All prices are in US $. You can pay in US $ or in your local currency when you check out.

EU customers: prices exclude VAT, which is added during checkout.

...Or Buy With Credits!

Number of credits (Minimum 1)

1
The author will earn $12.00 from your purchase!
You can get credits monthly with a Reader Membership

Author

About the Author

Gábor Szabó

Gábor Szabó has been programming for more than 40 years in a number of languages and in various environments.

These days he usually helps companies improve their engineering practices by providing training, introducing test automation, CI/CD. Sometimes this includes building internal web sites. Gabor also loves explaining things and provides training to his corporate clients and also in the academia.

Gabor runs the Code Maven site and a number of its sub-site where he writes about technologies such as Python, Rust, Git, Continuous Integration, etc.

The first main language Gabor used was Perl and so he maintains the Perl Maven site and he is the chief editor of the Perl Weekly newsletter.

The books Gabor publishes are based on his course materials. They include lots of examples with detailed explanations. This way if you can't book a course with him, at least you can read the materials and learn by yourself.

If you have questions fell free to send him a message via LinkedIn.

Contents

Table of Contents

About the book

Preface

Changes

  1. v0.04 2019-04-21
  2. v0.03 2019-04-07
  3. v0.02 2018-09-14
  4. v0.01 2018-09-13

Overview

  1. Hello World in Groovy
  2. Groovy: read from console (STDIN, keyboard)
  3. Groovy value types
  4. Groovy: Undeclared variable - runtime exception - groovy.lang.MissingPropertyException
  5. Groovy: Number guessing game
  6. Groovy: Determine type of an object
  7. Groovy: Lists
  8. Groovy: sum of numbers
  9. Groovy: color selector
  10. Groovy: read CSV file
  11. Count digits in Groovy
  12. Groovy: reading and writing files - appending content
  13. Groovy: listing the content of a directory, traversing a directory tree
  14. Groovy - Regular Expressions - regexes
  15. Groovy map (dictionary, hash, associative array)
  16. Groovy: JSON - reading and writing
  17. Groovy: Date, Time, Timezone
  18. Groovy: import and use functions from another file
  19. Groovy: Random numbers, random selection from list of values
  20. Groovy: Closures
  21. Groovy: remove spaces from a string
  22. Groovy: temporary file with autodelete
  23. Groovy: relative path
  24. Return multiple values from a function
  25. Groovy string length
  26. Groovy: substring
  27. Groovy: for loop - break - continue
  28. Groovy code reuse
  29. Groovy functions
  30. Groovy: evaluate code in another file
  31. Groovy classes
  32. Groovy function overloading
  33. Groovy variable scope
  34. Groovy recursive functions
  35. Groovy command line arguments (args)
  36. Groovy: join elements of an array
  37. Groovy pop push
  38. Groovy: Formatted printing with printf and sprintf
  39. Groovy System properties
  40. Groovy path to current executable script

Index

Get the free sample chapters

Click the buttons to get the free sample in PDF or EPUB, or read the sample online here

The Leanpub 60 Day 100% Happiness Guarantee

Within 60 days of purchase you can get a 100% refund on any Leanpub purchase, in two clicks.

Now, this is technically risky for us, since you'll have the book or course files either way. But we're so confident in our products and services, and in our authors and readers, that we're happy to offer a full money back guarantee for everything we sell.

You can only find out how good something is by trying it, and because of our 100% money back guarantee there's literally no risk to do so!

So, there's no reason not to click the Add to Cart button, is there?

See full terms...

Earn $8 on a $10 Purchase, and $16 on a $20 Purchase

We pay 80% royalties on purchases of $7.99 or more, and 80% royalties minus a 50 cent flat fee on purchases between $0.99 and $7.98. You earn $8 on a $10 sale, and $16 on a $20 sale. So, if we sell 5000 non-refunded copies of your book for $20, you'll earn $80,000.

(Yes, some authors have already earned much more than that on Leanpub.)

In fact, authors have earned over $14 million writing, publishing and selling on Leanpub.

Learn more about writing on Leanpub

Free Updates. DRM Free.

If you buy a Leanpub book, you get free updates for as long as the author updates the book! Many authors use Leanpub to publish their books in-progress, while they are writing them. All readers get free updates, regardless of when they bought the book or how much they paid (including free).

Most Leanpub books are available in PDF (for computers) and EPUB (for phones, tablets and Kindle). The formats that a book includes are shown at the top right corner of this page.

Finally, Leanpub books don't have any DRM copy-protection nonsense, so you can easily read them on any supported device.

Learn more about Leanpub's ebook formats and where to read them

Write and Publish on Leanpub

You can use Leanpub to easily write, publish and sell in-progress and completed ebooks and online courses!

Leanpub is a powerful platform for serious authors, combining a simple, elegant writing and publishing workflow with a store focused on selling in-progress ebooks.

Leanpub is a magical typewriter for authors: just write in plain text, and to publish your ebook, just click a button. (Or, if you are producing your ebook your own way, you can even upload your own PDF and/or EPUB files and then publish with one click!) It really is that easy.

Learn more about writing on Leanpub