I have an unusual pattern I'm trying to replace. My regex looking like this,

private String newLine = System.getProperty("line.separator");
private String regex = newLine + " [0-100]-";

It's not working. Does anyone know why?

it looks good to me. Provide some sample input (as characters) so we can make sure the newline is correct. if you're using \r\n but the input string only has \n then obviously it won't work

This post was edited by carteblanche on May 9 2013 05:32pm

Looks like this:

8 9
4 6
1 7
5-1
7 8
9
8 7
11-9


Where the " 5-1" and " 11-9" are what I'm trying to replace.

i think you missed the point of my request. show me the characters. eg break the string into a char[] and tell me what the newline is. is it \n, \r, \n\r, \r\n, etc and show me what System.getProperty("line.separator") is returning

what are you replacing it with? you might not need a regex depending on what you use. for example, you can possibly iterate line by line, trimming each entry, and replacing the - using the string's char replace method

My bad. I'm trying but the char array does not return \n, \t, \n\r, \r\n, it returns a new line followed by my regex. Like this,

[0-100]-

System.getProperty("line.separator") is returning a new line and nothing else.

i think you're still missing the point, so i'll rephrase: what unicode value is your input giving for newline and what unicode value is your regex using?

Unicode for System.getProperty("line.separator") is 10.

and the newline for the input?

create a string "\n 5-11" and see if it works

i'm assuming here that you're using the regex properly. eg: via replace, and you're returning it since strings are immutable, etc. if you're just checking matches() or isMatch() or whatever the boolean is, obviously it'll fail since there's more to the string. and obviously something like mystringvar.replace(..) is gonna fail if you dont use the returned value

This post was edited by carteblanche on May 9 2013 06:46pm

The regex should be as simple as

where \d is an integer, the + is 1 or more, the - of course is just a -
You don't need to check for new lines if the output looks like what you have above.

Try it out here: http://regexpal.com/

Actually that was extremely helpful. Thanks a lot!

Thanks to you as well carteblanche. I changed my newLine to just //n and escaped the second dash and it's working perfectly now.

This post was edited by Furio on May 12 2013 11:02am