range « number « Java Regex Q&A

1. Regular expression to allow range of numbers, or null    stackoverflow.com

I have the following Regular Expression, how can I modify it to also allow null? [0-9]{5}|[0-9]{10} I would like it to allow a 5 digit number, a 10 digit number, or null Thanks

2. Creating a number range from a regex-like descriptor    stackoverflow.com

I am trying to create a number range given a regex. This is the opposite of most questions in trying to validate if a number is in a range. I am ...

3. Checking a number range with regular expressions? Java    stackoverflow.com

i have a good question, i couldnt find any answers so far, so im asking here... The problem is this, im using a regular expression to validate certain format in a string, ...

4. generating numbers from range (using regex)    coderanch.com

Java itself doesn't. You can use IntRange though, or use a simple collection like a Set (use TreeSet or LinkedHashSet to keep the range ordered) or a List implementation. As for the regular expression, you can create one to extract the lower and upper bounds, but not to generate the numbers. You need to combine both solutions - one to extract ...

5. Regex - range of numbers    forums.oracle.com

6. regex for a range of numbers    forums.oracle.com

I wasn't giving working code, something for the op to go off of, given the light amount of information provided I don't even know if it would be possible to give code that would work completely. I suppose It would have been better if I had: 1) written code that compiles or 2) made a note that this is more pseudo ...