Regex | A delightful and expressive regular expression type | Regex library

I have timecodes with this structure hh:mm:ss.SSS for which i have a own Class, implementing the Temporal Interface. It has the custom Field TimecodeHour Field allowing values greater than 23 for hour. I want to parse with DateTimeFormatter. The hour value is optional (can be omitted, and hours can be greater than 24); as RegEx (\d*\d\d:)?\d\d:\d\d.\d\d\d

For the purpose of this Question my custom Field can be replaced with the normal HOUR_OF_DAY Field.

My current Formatter

We have thousands of structured filenames stored in our database, and unfortunately many hundreds have been manually altered to names that do not follow our naming convention. Using regex, I'm trying to match the correct file names in order to identify all the misnamed ones. The files are all relative to a meeting agenda, and use the date, meeting type, Agenda Item#, and description in the name.

Our naming convention is yyyymmdd_aa[_bbb]_ccccc.pdf where:

• yyyymmdd is a date (and may optionally use underscores such as yyyy_mm_dd)
• aa is a 2-3 character Meeting Type code
• bbb is an optional Agenda Item
• ccccc is a freeform variable length description of the file (alphanumeric only)

Example filenames:

I need a regex to find and insert anchor tags with a span child. e.g.

replace:

I am practicing regular expressions in Kotlin and trying to start with a simple string. However, I am not receiving any matches. I feel like I am doing it right and can't figure out the problem.

Test String: VERSION_ID="12.2"

And what would I do this for multiple lines:

I have a string formed by number and mathematical operator like "1 + 1 *1" that is the text content of the number appendend on the screen div, I want to form an array of them and then divide it using mathematical operators such as + or - as a divisor, the problem is that when I try to divide them the array is actually divided, except for when the "-" sign is present, in fact if I have as a string "1 + 1 * 1 -1" the result will be an array ["1", "1", "1-1"] while it should be ["1", "1", "1", "1"] Thanks everyone in advance.

I am currently working on some code for splitting a String into a wordlist, which works good so far with String[] s = input.split("\\W+"); The Issue is:

1. I am a noob when it comes to regex.
2. The more interesting words in that wordlist start with a $ Symbol, like e.g. $Word. How can I add this symbol to the split command, so that it is still included in the resulting wordlist?

I am trying to extract information from a message on an android application using regex which I am not quite good at yet.

The information I need is highlighted in bold from the following string.

PFEDDTYGD Confirmed.on 14/6/21 at 12:46PMKsh260.00 received from 254725400049 JOHN DOE. New Account balance is Ksh1,666. Transaction cost, Ksh1

code: PFEDDTYGD, date: 14/6/21, time:12:46, amountreceived: 260.00, phone no:254725400049 customer: JOHN DOE

here is my code: NB: the string is in multiline format.

I want to extract the double value from the string that contains a specific keyword. For example:

Amount : USD 3,747,190.67

I need to extract the value "3,747,190.67" from the string above using the keyword Amount, for that I tested this pattern in different online Regex testers and it works:

I'm gathering text in form using textarea and I plan to render that text using .innerHTML so that the user can make the content bold, italic and underlined. I might decide to increase the flexibility to allow coloured text using style attribute as well.

I have considered using regex to match the text but I'm hoping for a more elegant solution.