String replace function not working in android

Question

I used the following code to replace occurrence of '\' but its not working.

msg="\uD83D\uDE0A";
msg=msg.replace("\\", "|");

I spent a lot of time in Google. But didn't find any solution.

Also tried

msg="\uD83D\uDE0A";
msg=msg.replace("\", "|");

Answer 1

The msg string defined must also use an escape character like this:

msg="\\uD83D\\uDE0A";
msg=msg.replace("\\", "|");

That code will work and it will result in: |uD83D|uDE0A