I spent half a day playing with https://regexone.com and got the fundamentals in place, after that it’s been practice in solving tasks at work. Rubular is awesome if you’re looking to test out a pattern. - Source: Hacker News / almost 2 years ago

Start with https://regexone.com/ fun puzzle style interactive tutorial to grasp the basics. After that it's the matter of either it using it with your CLI tools or applying it to problems you are working on. - Source: Hacker News / almost 2 years ago

RegexOne - Learn Regular Expressions -- will get you thru the basics (i.e., more than most people know) with interactive practice which is probably the best way. HTB probably does the hands on approach, too. Anyhow, RegexOne makes it about as clear as it gets, and keep practicing until is sinks in is my advice. Source: over 2 years ago

I spent 30 minutes learning regex from https://regexone.com/ years ago. The attitude of "I don't need to learn is baffling. Source: about 3 years ago

Https://regexone.com/ is a fantastic resource for learning the foundations of Regex. Source: about 3 years ago

IDK if his Udemy course ("Spring Boot E-Commerce Ultimate Course") is relevant to what you are trying to learn, but I want to commend Nam Ha Minh as someone who has answered every question I asked about the course material within 24 hours. There aren't many teachers like that, it seems, so it seems worth praising those that do this. Maybe other teachers will feel more encouraged to follow suit if they see the... Source: about 4 years ago

From what I read, there are examples to work though, so you will get hands-on coding experience. Even more important, one review refers to the author replying to a reader with a question about one of the examples. Finding teachers that actually respond is rare, in my experience. I've only found one with such a commitment to his students, to date: Nam Ha Minh of the codejava website and author of a few udemy... Source: over 4 years ago

Of the various tutorial sites, I have found the content at codejava.net to be reliable and well written. The author doesn't just regurgitate documentation specs and examples, but puts time into creating additional, original examples that help clarify things. He has many tutorials that are Spring based. I don't know what books to recommend--I've been learning Spring most via tutorials and Udemy classes. Source: over 4 years ago

But after formation of my jar file, it is not running. I know that this is silly application but I am not getting why my application is not running. So can you look at my code and can give where I am making mistake. I am making some mistake in making jar file. I have taken part of code from codejava.net and so package name is I kept net.codejava.networking. Source: about 5 years ago