Groovy Tutorial

[@derekbanas]

Learn in One Videos for Every Programming Language Subscribe to Bookmark them: bit.ly/2FWQZTx C++ : kzbin.info/www/bejne/iKbFXn2pn7Kbjbs Python : kzbin.info/www/bejne/hGXQdq18ec-kqqM Java : kzbin.info/www/bejne/pF7bcqSZd6iqqZY PHP : kzbin.info/www/bejne/bYWpYWOef65qbrs MySQL : kzbin.info/www/bejne/r4HYZ6SMasesq5Y JavaScript : kzbin.info/www/bejne/nJvYapyfbb6mfdU C# : kzbin.info/www/bejne/oprWmqqLj6-Lp7M HTML5 : kzbin.info/www/bejne/oXXce4FtprZ4iqM CSS3 : kzbin.info/www/bejne/eYbbeZKojLh8Z80 JQuery : kzbin.info/www/bejne/eIi7mJp4YrlkoLM TypeScript : kzbin.info/www/bejne/Y4G1kIunjJ59gLc ECMAScript : kzbin.info/www/bejne/gJLOoJxmfJ2feMk Swift : kzbin.info/www/bejne/mnzEoJ2Fj5KUsJo R : kzbin.info/www/bejne/qWSpoK2Mm8lqp5Y Haskell : kzbin.info/www/bejne/ZmPCeWaCn9aAqJo Handlebars : kzbin.info/www/bejne/annYcqGDa8dlmpo Bootstrap : kzbin.info/www/bejne/naKydqKLh5qFfsk Rust : kzbin.info/www/bejne/i2Kod5p5g7F3eJo Matlab : kzbin.info/www/bejne/hIS2hZ6hgLeUmKs Arduino : kzbin.info/www/bejne/h4DCe5-wZtajetk Crystal : kzbin.info/www/bejne/eqmpgWCNn9anqcU Emacs : kzbin.info/www/bejne/f5LKk6lvbJl6orM Clojure : kzbin.info/www/bejne/mZqqqnuhedqDd6c Shell : kzbin.info/www/bejne/nqjVn6CHqtKnhtk Perl : kzbin.info/www/bejne/jXbKmXyOqJ15bMU Perl6 : kzbin.info/www/bejne/omHdgaqenLyHna8 Elixir : kzbin.info/www/bejne/pnOxgJSsh9SBgpI D : kzbin.info/www/bejne/qKi9d4ekm56Verc Fortran : kzbin.info/www/bejne/lZCVhpp8g76anJo LaTeX : kzbin.info/www/bejne/jJnQnH-ohM9_qdk F# : kzbin.info/www/bejne/mWjIf3eAg5xobrc Kotlin : kzbin.info/www/bejne/fpDSeJxuqtp3pqM Erlang : kzbin.info/www/bejne/f3bLqJZoppatfZY Groovy : kzbin.info/www/bejne/eGqbm5Zuncmob8k Scala : kzbin.info/www/bejne/equppWOPoL-ibq8 Lua : kzbin.info/www/bejne/n37ElKuQhrKDjtU Ruby : kzbin.info/www/bejne/epvManSCeMyZpq8 Go : kzbin.info/www/bejne/eXechGeHj9qJaZI Objective C : kzbin.info/www/bejne/a5bWgqSQfq9rack Prolog : kzbin.info/www/bejne/iarOqYqme9yAfdU LISP : kzbin.info/www/bejne/r562ometfdekr7c Express : kzbin.info/www/bejne/rnWmfJaEd6umq6s Jade : kzbin.info/www/bejne/omakiZaOdrVnqJo Sass : kzbin.info/www/bejne/rauWnHiigcd4fqc

[@mgg4142]

You are the man!

[@appalanaidu3171]

Very helpful 👍. Great video at good pace for some who knows java already. Thank you.

[@gandatrowx]

This is perfect! 😂😂😂

[@ScrolltheNature]

thanks for tutorial it is great help. Although i am beginner won't be it much better if you directly pick functions from documentation it will be easier for us to refer things.

[@shipoopi228]

Almost 6 years later, this comes as a lifesaver. You are simply AMAZING. Your way of constructing a video is TOO good, I have been looking far and wide for this kind of format, where the information is simply given in a concise manner, and you delivered even more! It's a struggle to watch a 2 minute video for me, but I sat through the whole hour and didn't feel the time passing. Every single information is vital, and this answered every single question I had in the most pleasant manner. I CANNOT thank you enough for your tremendous effort and your lovely soul, THANK YOU!!

[@sohpol]

When you already know your basics, this kind of videos are perfect! Thanks Derek. You're the best! :)

[@galanoth17]

Thank you so much for this. As a java developer, I have learned groovy in 60 minutes. I'm pretty confident I can code in it easily. No wasting of time. Nothing. Straight to all the features of the language. Love it.

[@GeloEd]

1 hour of groovy tutorial. You exerted really much effort on this. Thank You

[@derekbanas]

+An-gelo Edquila You're very welcome :)

[@anilvijay9753]

Literally in 1 hour you have covered heck of a lot, could really stick on until last. Every second a new info and a nice way of presenting everything without much of boring theories....

[@derekbanas]

Thank you :) I'm happy you liked it

[@mjslater13]

utstanding tutorial Derek, thank you! I watched the entire thing, which took me about 4 hours as I paused, rewound, typed out and tested all of the code, etc. There is a huge amount of detail you've covered in 1 hour - amazing. You are right, it felt like at least a 150 page book on Groovy.

[@derekbanas]

Thank you for the compliment :) I'm glad you found it useful

[@shahideq]

Extremely helpful for a rank beginner like me and though I do understand that the tutorial is just scratching the surface, not many will be able to cover so much basic stuff in just one hour. An hour well spent! Thanks for the effort.

[@derekbanas]

Thank you very much :) I do my best to cover as much as possible

[@maxd7228]

I watched the entire thing. My type of pace. I fall asleep to the lengthy tutorials. You get to the point and add some funny to it. Awesome.

[@derekbanas]

Thank you very much :)

[@nateswany]

Watched the whole thing across two days of studying - about half each day with books, practice in the IDE, and other studying done in between. Still useful over 8 years later! Thanks :)

[@kennethsizer6217]

Love how much you cram into one hour. Double word score for bookmarking each section. Well done, Sir.

[@derekbanas]

Thank you very much 😀

[@dahax4103]

Great tutorial, I watched id from the beginning to the end (it took me about 1 and a half hours). I think these "short" tutorials are great to watch before starting to read the documentation of the language. That makes the understanding of documentation way simpler. Thanks a lot

[@derekbanas]

+Dahax Thank you :) I did my best to cover languages in new ways to provide alternatives. I'm glad you liked it.

[@djvh2]

I agree. There is a lot there, but easy to watch through it all if you've done some programming before. Is there a place to copy your code so I can paste it somewhere and make changes to play around with it?

[@shivamshandilya5059]

watched the complete video and i have to say it, you make such concise and condensed tutorials which are very helpful

[@derekbanas]

Thank you for the nice compliment :) I'm happy i could help

[@Anymain]

I was needed to learn a little of Groovy for my job tasks. And about 1 hour ago I new absolutely nothing about it. I knew a lot of C++ and Python, may be a little in other languages, but not in Groovy. After this video I feel like now I know at least the most needed basics of this language, so I can use it already. Thanks a lot, materials was very clear, fast and well showed. Great job, sir :3

[@dalewong4867]

this is literally the best beginner tutorial I have seen for Groovy. Especially for people like me who is familiar with python and R but not a bit with Java/ Groovy. Great job!

[@derekbanas]

Thank you very much :) I'm glad it helped

[@nidhikakani6350]

Good work Derek!!! It's clearly visible that how much hard work you did in just a single video. Hats off to you! Please make one more video for "Advance Groovy Concepts". Thanks

[@derekbanas]

Thank you :) I'm happy you liked it. I'll see what I can do about more Groovy videos

[@thedelmonacofund3234]

Thank you for taking the taking the time to make the Groovy video -- watched it at 2x speed, as I know Java very well -- now I am comfortable with Groovy. Excellent over view.

[@mhmdabdh88]

This has given an excellent start to me for groovy scripting, I watched the entire video spanned over 5 days trying out the bits which you have done too. Thanks for putting this up and will be looking up your name for the other videos you are coming up with.

[@derekbanas]

Thank you :) I'm very happy that I could be of help

[@jliu6735]

I was writing a Gradle plugin and needed a Groovy crash course. Your video helped me so much and saved me a lot of time. Thank you.

[@shishirrockstar]

That's a great video Derek. Very well explained and to the point. I couldn't stop myself watching the whole video. Double thumbs up!!

[@derekbanas]

Thank you for the nice compliment :)

[@vijaya2975]

Groovy session was simply quick, crisp and superb. Covered much more in such small video.Thanks

[@derekbanas]

Thank you I’m happy you liked it

[@alborzzz]

I watched every second of this video all the way to 1:07:22! Amazing job. for me being away from coding for several years, this was the best thing that could happen to me! Good Job Derek!

[@derekbanas]

Thank you for the nice compliment :)

[@sakerson27]

I watched the whole video and it was super helpful (spanned it over a few mornings this week). Thanks so much and look forward to checking out what else you have on you channel!

[@derekbanas]

I'm very happy that it helped :) I have a video like this for pretty much every language

[@Easy_Tea6363]

Thanks! Java developer and impatient learner I really appreciate the quick getting up to speed. Let's me get started faster!

[@stephaneleblanc4710]

I watch it all and would of also watch the error handling... Thanks allot... Starting a new job in 4 days and I was told to learn groovy... highly relevant and very well explained... thanks Derek

[@powerpoison]

I did watch the whole video, thanks for doing this. Straightforward way to cover the basics and get it done in 1 hour, simply genious!

[@derekbanas]

Thank you for the nice compliment :)

[@gintsberzins191]

Just about to start my summer internship as a tester. Watched it all and I hope this helps me do the tasks asked of me. Thank you so much for this video, I do feel somewhat less stressed about starting.

[@derekbanas]

You're very welcome :) Best of luck on your internship!

[@jadonpetersen1018]

I just started learning Groovy for work, 6 years after this video was uploaded.. =) Found this today..

[@doug1727]

Very helpful. I watched the whole video--just jumped the conditional part. The part you talk about closure was the best one imo. Thanks a lot!

[@doug1727]

Subscribed

[@derekbanas]

Thank you :) I'm glad you liked it

[@pingvin300]

Greetings, Derek! I needed to get the basics behind Groovy so that I can do a task of mine and your video was excellent for me personally. I've background in other languages, so this video was easy for me to follow and I was fascinated by the ability to use range in side of Switch statement - just wow :D Happy New Year by the way!

Great job Derek! Comprehensive yet easy to follow and understand.

[@derekbanas]

Thank you :) I'm happy it helped

[@markbohannon6072]

Derek, thank you for another great video. I am always amazed at how much you can cover in such a short period of time. Keep up the good work.

[@derekbanas]

+Mark Bohannon Thank you for the nice compliment :)

[@jlei6802]

I enjoy it. I find it's a nice quick overview of Groovy on important topics. Thank you

[@GeorgeDekker]

I not only watched this video at least twice. I tell my students to watch it. Thanks for making it!

[@derekbanas]

Thank you for recommending it :)

[@TheTotuzzo]

One of the best introductory video I've ever seen, well done! I watched the entire video, coming from Python Groovy seems to be pretty easy to get started with.

[@derekbanas]

Thank you for the nice compliment :)

[@alexandersemigrodskikh8400]

It's a good one. I didn't expect to encounter closures and pre-existing set methods in classes.

[@nk2164]

Took a few breaks, but i'm done with this now. Thank you Derek. Please make one that covers some advanced Groovy as well.

[@derekbanas]

I'm happy you liked it :) I'll see what I can do

[@frakman1]

Great tutorial. Thank you for sharing. At 57:22 you say the numbers are doubled. They are actually just the even numbers of the list. I watched the whole thing too.

[@derekbanas]

I'm glad you liked it :) Sorry for misspeaking

[@MrIndoAussie]

One of the best videos on groovy

[@fathepurmahesh]

Its a best ever tutorial i saw. Thank you so much. I got an idea about Groovy. Thank you.

[@derekbanas]

Thank you :) I'm happy you liked it

[@juanjanse1234]

From a Java background : The Tut was perfect for me just to get going. Thanks ;)

[@derekbanas]

I'm happy it helped :)

[@nagapavankumarkalepu5231]

Great content in one hour bro... It's really helpful for me to learn groovy so quick...Thank you...

[@IIIIIIIIIIIllllllIIIIIIIIIII]

Bro, this is my third video you have made I am watching on how to learn an entirely new langugage. Haskell was great, Prolog was good enough (but not enough reucrsion and list comprehension), but this as a regular language (hopefully) is going to be awesome video. Thanks for makin these! Gonna like preemptively.

[@jarlfenrir]

46:20 isn't that code checking that string is immutable instead of verifying if its pas by value or reference?

[@yogesh4tube]

Very nice and concise video on whole groovy in 1 hour, I got a very good understanding of groovy after watching this, thank you very much

[@derekbanas]

Thank you :) I'm happy it helped

[@gandatrowx]

Perfect pace. Watched the whole thing. Thank you!

[@derekbanas]

Thank you very much :) Happy I could help

[@msqauredappsmsqauredapps8243]

Awesome introductory tutorial on Groovy. Great work Derek.

[@derekbanas]

Thank you :)

[@VideoNOLA]

33:30 Would the range 'r'..'r' produce (a) 'r, r', (b) 'r' or (c) null?

[@iPranav007]

Derek banas is god of teaching 🙌🏻🙌🏻🙌🏻🙌🏻 love each and every tutorial ❤️

[@derekbanas]

Thank you for the nice compliment :)

[@TheSportsGuyy]

Your knowledge for all the languages is insane. I hope to get a fraction of your knowledge in programming.

[@derekbanas]

+TheSportsGuyy If I can do it anyone can

[@mandy2533]

Watched the whole thing and it was extremely informative.I also appreciate the resources in the description and will definitely be using them. Thanks much!

[@derekbanas]

Thank you very much :) I'm happy it helped

[@akiratoriyama1320]

Once again I am looking for a technology and derek is here to back me up!! Thank you sir!!

[@derekbanas]

It is my pleasure to help :)

[@Kinos141]

16:17 - Actually you need curly brackets for functions and [ ] example println "3rd Index of Name ${name[3]} ${jay('yup')}" Without the curly brackets it will crash

[@katieedwards4601]

Hey Derek, was a big fan of your design pattern tutorials. This is another great tutorial! I will continue to recommend your stuff :) keep up the good work!

[@derekbanas]

Thank you very much :)

[@VideoNOLA]

At 54:45, is it possible to return the index of the array item that matches "Sue"?

[@harmindersandhu5756]

I watched the whole thing :) You made learning Groovy so easy, thanks so much! You're awesome!

[@derekbanas]

Thank you very much :) I'm happy it helped

[@varunbharadwaj23]

This video helped me to understand groovy basics very well. Contributors like you are making developer's life easy, thank you :)

[@derekbanas]

Thank you :) Happy I could help

[@kapilbudhiraja9635]

Very nice approach of teaching with hands-on practical way. Super appreciated!!

[@derekbanas]

I'm very happy that you liked it :)

[@JagatChowdhury]

Watched the whole video and subscribed. very much understandable and covered a lot. :)

[@GerbenWijnja]

Derek, at 28:25 in the video, line 18 and 20 do nothing, as is confirmed when you execute the code at 29:00. The list stops at 23. You probably meant to write += and -= instead, that would have worked. Maybe you can add an annotation...

[@derekbanas]

Sorry about that bug

[@j4mper]

well structured, good pace and clear examples! Kudos to author!

[@derekbanas]

Thank you very much :)

[@nicktt800]

So far this has been a very good tutorial, thank you so much for posting it. Also, has anyone else noticed you sound a lot like Andy Bernard from The Office? I keep picturing him talking as I watch this.

[@derekbanas]

Thank you :) Yes people tell me I sound like him all the time

[@theobellash6440]

I increased the speed x1.5 and appreciated the video. Thanks

[@7contractors]

I watched the whole video. Excellent work!!!

[@derekbanas]

Thank you for taking the time to tell me :) I'm happy you found it useful

[@Ambidextrous_human]

It was a very crisp video, for a kickstart. Thankyou Derek

[@derekbanas]

Happy to help :)

[@jonpopeadventures]

Watched till the end :) great video, really good pacing on it

[@BeyondOpenSource]

Thanks Derek! Great intro to start adding Groovy scripts to Jenkins jobs.

[@Shmalentine]

Watched the whole thing. Thank you for making it. It gave a good overview of Groovy.

[@derekbanas]

Thank you :) I'm glad it helped

[@lujia3297]

just finish watching all the video. Is very good. Thanks a lot

[@derekbanas]

Thank you :) I'm happy you liked it

[@victoremepunt]

There's an error at 1:00:40, when using the closure to list the Files at root' , you're referring to a non existing 'file' property, either change item to file, or refer to item. ... this dirFiles.each { item -> println item.absolutePath; } instead of dirFiles.each { item -> println file.absolutePath; }

[@metall7331]

Watched the whole thing. Thanks for the tutorial! 😊

[@qgjones9]

This was absolutely what I was looking for. Thank you sir!

[@derekbanas]

Thank you :) I'm happy I could help

[@abusittik7856]

watched the whole video. Great Tutorial. Covered a lot in one shot.. Thanks for explaining in detail.

[@derekbanas]

+abu sittik I'm very happy I could help :)

[@petrilaakso7927]

I watched this to get quickly started on Jenkins groovy scripts. Thanks!

[@derekbanas]

Happy I could help :)

[@George87MG]

Hey Derek, thanks for the tutorial! I did watch it all the way to the end.

[@derekbanas]

Thank you :) I'm very happy to be of help

[@snotrag96]

Great Video, thanks for a quick example on how the language works and different ways to implement it!

[@derekbanas]

Thank you :) I'm happy I could help

[@lcjdot]

Excellent tutorial! Thank you for being so thorough with the steps as well as the documentation!

[@derekbanas]

Thank you very much :) I'm happy you found it useful

[@Amirhesamyan]

I really enjoy your videos, they are excellent source of learning. I know Groovy very well and I wish you also explained why we should use Groovy in the first place, for what kind of problems it is aimed for, it's type system and brief history of the language. Languages like Java, Python, C++ and etc. are general purpose but Groovy is not.

[@derekbanas]

+Amir Hesamian Thank you :) Sorry for not doing that. I was under the opinion that people didn't like when I talked about that in my tutorials. I will definitely do that in the future.

[@ucucgraf]

Sorry for interrupting :) As a novice in Groovy I like all of videos from Derek. For instance, in our job we are using JMeter tool. In the JMeter Groovy is better then Java. As i understood it. By different reasons. Happy coding.

[@StuartMail1]

Derek this is an excellent introduction to Groovy THANK YOU - and yes I watched the whole video but with a tea break half way ;)

[@derekbanas]

Thank you :) I also appreciate a nice cup of tea

[@randymoulton8160]

Hey Derek I watch your whole Video and I loved it. Good stuff. Thanks for doing the video.

[@derekbanas]

Thank you :) I'm happy I could help

[@matt5284]

Thanks so much, have just learnt Groovy in a few hours using this

[@derekbanas]

I'm happy I could help :)

[@JustRootsAndLeaves]

The code up to 29:00 has some incorrect statements primes + [29,31]; primes - [31]; should read primes = primes + [29,31]; primes = primes - [31]; This can be seen in the output of println(primes); where the number 29 is missing.

[@dhanushshetty7840]

I got from one of the later commens that on changing it to += and -= it works fine. Error in the code

[@JustRootsAndLeaves]

@@dhanushshetty7840 x=x+1 is the same as x+=1. += is short cut code to do the same thing. The error in the video is omitting + and -

[@hakankurt1474]

Thanks for tutorial. It covers a lot of features of Groovy.

[@derekbanas]

I'm happy I could help :)

[@MrDFJohnson]

Thanks for this video Derek. Your work is appreciated. Also thanks for the timestamps. Very helpful!

[@udaykumarvarmapathapati4424]

This is Awesome. You are a Champ. Great introduction to Kick start Groovy.

[@derekbanas]

Thank you :) Happy I could help

[@VideoNOLA]

26:30 I honestly had not expected array indexing to be 1-based in Groovy, but if so, that's brave and probably a boon for n00bs. "Oops, the arrays are zero-based, psych!"

[@dostedi]

Thanks Derek. This tutorial is really helpful.

[@hbladeh]

Sticked all they way to the end :) Awesome :)

[@SeoulMeetsSoul]

I just got a job that requires me to program in Groovy. you are a life saver!!!

[@derekbanas]

+SeoulMeetsSoul I'm glad I could help :) Best of luck at your job!

[@TheZarkoc]

+Derek Banas I'm starting a job with groovy and grails in a couple of weeks, this video was a great help. Are you planing on doing a Grails tutorial?

[@christiansailor2880]

Wow! That was a lot in just 1 hour! Thank you!!

[@derekbanas]

You're very welcome :)

[@debu000001]

@Derek I really enjoyed your video it was totally worth it. its rapid, compelling, brief. wish that you had covered more on OOP and exception. i would very much like to watch that video.

[@derekbanas]

Thank you :) I do way more with OOP in my Java tutorials

[@gpharlock372]

Absolutely marvelous crash-course!

[@derekbanas]

Thank you :) I'm happy I could help

[@naginenipavankumar1298]

Thanks a ton....Derek..Videos like this what we will expect....for any language....Got Grrovy

[@derekbanas]

I'm very happy you liked it :)

[@mamtas8537]

I watched complete video. Very nice explanation. Thank you.

[@derekbanas]

Thank you :)

[@thesavagesalmon9464]

wow, groovy is so flexible, and part of me likes that, while part of me sees it as a limitation. Sometimes a strict syntax can help with common understanding.

[@candccontent]

Thanks for the video! I'm gonna be using Groovy in my new job and this was a helpful primer.

[@derekbanas]

You're welcome :) Best of luck with your new job

[@TitiTraves]

Hey Derek! Thanks for the tutorial, I was looking to learn Groovy :) Also as Palvinder Sander asked above I'd be interested in a video on how to learn a language quickly and efficiently too :D Cheers, keep up the good work !

[@derekbanas]

+TitiTraves Your welcome :) I'm working on that video. It is just something that I have done so many times that it is natural for me. I'll try to break it into steps.

[@jfriz6]

Definitely watched the whole way through and followed along. This helped me a lot as I am using Script Runner in JIRA to enhance workflows. Subbed and liked. Thanks, Derek!

[@derekbanas]

Thank you very much :)

[@ciscoprog]

Wow, watched it all and played around with the code on my own as I went through it. It's been about 12 years since I've programmed so I'm a bit rusty. Took me a few days to go through it because like I mentioned, I was coding right along with you. I want to play around with Smartthings and want to get acquainted with Groovy. I have a ways to go yet. Also using the Webcore a bit as well. Thanks for a very nice video.

[@derekbanas]

Thank you :) Yes it is best to take your time with the videos. I'm glad it helped

[@veereshps6807]

Thank you for the video. It helped me understand Groovy basics.

[@derekbanas]

Thank you :) I'm happy it helped