replace \n and \r\n with <br /> in java

Question

This has been asked several times for several languages but I can't get it to work. I have a string like this

String str = "This is a string.\nThis is a long string."; 

And I'm trying to replace the \n with <br /> using

str = str.replaceAll("(\r\n|\n)", "<br />"); 

but the \n is not getting replaced. I tried to use this RegEx Tool to verify and I see the same result. The input string does not have a match for "(\r\n|\n)". What am i doing wrong ?

Answer 1

It works for me.

public class Program {     public static void main(String[] args) {         String str = "This is a string.\nThis is a long string.";         str = str.replaceAll("(\r\n|\n)", "<br />");         System.out.println(str);     } } 

Result:

 This is a string.<br />This is a long string. 

Your problem is somewhere else.

Answer 2

A little more robust version of what you're attempting:

str = str.replaceAll("(\r\n|\n\r|\r|\n)", "<br />");