Question

my file contains this string:

a

b

c

now I want to read it and split it with empty line so I have this:

text.split("\n\n"); where text is output of file

problem is that this doesnt work. When I convert new line to byte I see that “\n\n” is represented as 10 10 but new line in my file is represented by 10 13 10 13. So how I can split my file ?

Answer 1

Escape  Description            ASCII-Value
\n      New Line Feed (LF)     10
\r      Carriage Return (CR)   13

So you need to try string.split("\n\r") in your case.

Edit

If you want to split by empty line, try \n\r\n\r. Or you can use .readLine() to read your file, and skip all empty lines.

Are you sure it’s 10 13 10 13? It always should be 13 10…

And, you should not depend on line.separator too much. Because if you are processing some files from *nix platform, it’s \n, vice versa. And even on Windows, some editors use \n as the new line character. So I suggest you to use some high level methods or use string.replaceAll("\r\n", "\n") to normalize your input.