Java regex delete every char after specific char line by line

Question

I have textfile with lines like:

stackoverflow (200) stack over flow
stack over flow (150) over flow 
stack (15) 
stackoverflow (50) something

and I need to delete everything after () to get

stackoverflow (200)
stack over flow (150)
stack (15)
stackoverflow (50)

I tried with

 String string = new String(Files.readAllBytes(Paths.get("file.txt")));

  String result = string.split("\\)")[0];

but it doesn't work

Possible duplicate of [Learning Regular Expressions](http://stackoverflow.com/questions/4736/learning-regular-expressions) — Winter, Dec 05 '16 at 15:18
@TimothyTruckle it works only if I have one line string, but I have file with 5k lines — Skillzone, Dec 05 '16 at 15:21
@Skillzone - Then read the file line by line using `Files.readAllLines()` and then apply the regex to *each line*. I would suggest using `replaceAll` instead of `split` — TheLostMind, Dec 05 '16 at 15:23

score 0 · Accepted Answer · answered Dec 05 '16 at 15:24

0

The following regex will do the trick. You replace all string of the form (200) to be removed \n with (200) (that is $1)

s.replaceAll("(\$.*\$).*\\n?", "$1\n")

answered Dec 05 '16 at 15:24

Aimee Borda

1 Answers1