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

Use Online Tools: There are many online regex testers and visualizers that can help you see how your patterns match against sample text. These tools often provide explanations for each part of the regex. I personally use https://regexr.com/. - Source: dev.to / about 1 year ago

However - here it becomes weird - when testing the original regex rule (the first one, without the \u00A0 part) on the same string in an interactive visualiser (https://regexr.com/ for instance), there is a match:. - Source: dev.to / almost 2 years ago

Learned regex in the 90's from the Perl documentation, or possibly one of the oreilly perl references. That was a time where printed language references were more convenient than searching the internet. Perl still includes a shell component for accessing it's documentation, that was invaluable in those ancient times. Perl's regex documentation is rather fantastic. `perldoc perlre` from your terminal. Or... - Source: Hacker News / almost 2 years ago

I read a lot on https://www.regular-expressions.info and experimented on https://rubular.com since I was also learning Ruby at the time. https://regexr.com is another good tool that breaks down your regex and matches. One of the things I remember being difficult at the beginning was the subtle differences between implementations, like `^` meaning "beginning of line" in Ruby (and others) but meaning "beginning of... - Source: Hacker News / almost 2 years ago

Mostly building things that needed complex RegEx, and debugging my regular expressions with https://regexr.com/. - Source: Hacker News / almost 2 years ago