bestcourses is supported by learners. When you buy through links on our website, we may earn an affiliate commission. Learn more

The Complete Regular Expressions(Regex) Course For Beginners

Regular Expressions (Regex) for Java,Linux,JavaScript,Python or other languages, with 30 illustrated exercises/examples.

4.9 / 5.0
20542 students3 hours 34 minutes

Created by Sujith George, offered on Udemy

bestcourses score™

Student feedback


To make sure that we score courses properly, we pay a lot of attention to the reviews students leave on courses and how many students are taking a course in the first place. This course has a total of 20542 students which left 4875 reviews at an average rating of 4.9. Impressive!

Course length


We analyze course length to see if courses cover all important aspects of a topic, taking into account how long the course is compared to the category average. This course has a length of 3 hours 34 minutes, which is pretty short. This might not be a bad thing, but we've found that longer courses are often more detailed & comprehensive. The average course length for this entire category is 4 hours 58 minutes.

Overall score


This course currently has a bestcourses score of 9.0/10, which makes it a great course to learn from. On our entire platform, only 15% of courses achieve this rating!


Regular expressions(regex) is a moderately difficult topic to grasp, as well as teach. It is really important that you grasp the core concepts thoroughly. Once you get the fundamentals right, regular expressions(regex) will come naturally to you. I struggled to learn regular expressions(regex) myself a couple of decades back. I completely understand the pain points. I have seen tons of free youtube videos on regular expressions(regex), but they all fail in something fundamental. They do NOT care about getting the basics right. I have taken immense efforts to prepare this course material. Each and every concept, each and every exercise, has been meticulously planned in such a way that it sticks to your brain easily. I have created graphical illustrations wherever possible to drive home the point. Each of the 30 examples come with graphical illustrations on how the regex techniques are applied in a step-by-step way, to come up with a solution.

I teach regular expressions(regex) using the POSIX standard. I have done so because the POSIX standard is followed by ALL regex engines. So if you know how to apply the techniques that you learn from this course, you can play around with regular expressions(regex) in ANY programming language of your choice. You could even try it out in Notepad++ (Yes, Notepad++ comes with a basic regex engine.)

I have hands-on sessions for ALL the 30 exercises in this course. Even if you are not familiar with the programming language, you will be able to follow it easily and apply it to your case.

I have kept my voice narration to a very slow pace on purpose. You can put me on 1.5x or even 2x speed on the Udemy player, if you think I am slow.

Something else that is special about this course - The subtitles are hand-scripted and accurate. I have even checked the timings to guarantee accuracy. Most courses come with subtitles that are auto-generated using a Speech-To-Text Engine, the accuracy of which is fairly low. But not mine! I have taken pains to script my course to perfection and include the subtitles too. So if you are at work, and you want to put me on mute, please feel free, although I would like you to hear my voice narration. If you want to put me on mute, just enable the subtitles in Udemy and play!

What you will learn

  • Learn Regular Expressions(regex) - A must have skills for an IT professional or a data scientist today in today's world.
  • Understand the core concepts. Once you understand the core concepts, regular expressions(regex) are a piece of cake!
  • Once you learn the basic technique, you can apply your knowledge of regex to any programming language like Java, Python, JavaScript, Linux command line etc.
  • Avoid rote learning, and follow beautifully designed illustrations to understand the core techniques of regular expressions(regex).
  • 30 hands on examples; Each example comes with a step-by-step solution, with graphical illustrations.
  • Follow a well defined step-by-step process , exclusively designed by yours truly, which will enable you to create, use and apply regular expressions(regex) in any scenario that calls for it.
  • Hands-on sessions for multiple regex engines like Java, grep etc. The techniques will be taught in such a way, that you can apply it to ANY regex engine of your choice.
  • Follow standards while learning, so that the regex techniques that you learn in this course can be applied to any standard regex engine like Java, Python, Javascript, grep, sed etc.
  • Take up regex challenges once you have grasped the core concepts.
  • The whole course is scripted to perfection with subtitles.
  • Hand-typed subtitles are provided, which are 100% accurate. The auto generated speech-to-text subtitles are usually of not much use because of low accuracy.


  • All you need is a PC and any tool or programming language of your choice,that has a regex engine. Even notepad++ will do!
Udemy logo
Available on


With almost 200,000 courses and close to 50 million students, Udemy is one of the most visited online learning platforms. Popular topics include software development, the digital economy, but also more traditional topics like cooking and music.

Frequently asked questions

  • Price: $19.99
  • Platform: Udemy
  • Language: English
  • 3 hours 34 minutes
The Complete Regular Expressions(Regex) Course For Beginners thumbnail

bestcourses score: 9.0/10

This course is better than many others in its category.