I build a string on a unix server and write it then down on a windows maschine. To make a linefeed I use "\r\n" but then the server only adds the unix linefeed "\n". The point is the eol is in hex 0a and I need 0d0a for other programs.
Has anyone an idea to convert the linefeeds before writing it down on the windows maschine?
To convert the string to hex then replace all 0a with 0d0a an convert it back to a string is not the best practise. Has anyone a better solution?
Writing "\r\n" to a file will output "\r\n", not "\n", to the file, even on *nix. Here's an example, using a BufferedWriter since at one point you said you were using one:
import java.io.*;
public class Example {
public static final void main(String[] args) {
System.out.println("Writing to test.txt");
try (
Writer w = new FileWriter("test.txt");
BufferedWriter bw = new BufferedWriter(w);
) {
bw.append("Testing 1 2 3");
bw.append("\r\n");
bw.append("More Testing");
bw.append("\r\n");
}
catch (IOException ioe) {
System.err.println("Error writing to file: " + ioe.getMessage());
}
System.out.println("Done");
}
}
Running it:
$ java Example Writing to test.txt Done
Proof it writes \r\n (not just \n) to the output (yes, I'm using *nix, specifically Linux Mint 17.3):
$ hexdump -C test.txt 00000000 54 65 73 74 69 6e 67 20 31 20 32 20 33 0d 0a 4d |Testing 1 2 3..M| 00000010 6f 72 65 20 54 65 73 74 69 6e 67 0d 0a |ore Testing..| 0000001d
br is, a bit more context, ...If you really want to change default for entire application, redefine line.separator system property at startup (with -D parameter). But it is quite heavyweight solution, it might be easier to just explicitly write newline characters for particular reports you need, while leaving all the rest (like native log files or whatever) with unix newlins.
br? I'd thinkBufferedReaderbut obviously that's input, not output...brwas aBufferedWriter.BufferedWriterhas noappendLinemethod. So, again, if you tell us what type thebrin yourbr.appendLine()is, maybe we can help you more.\r\nto a file absolutely writes\r\nto the file, not just\n, even on *nix. You'll need to provide more information.