java replaceAll not working for \n characters

Question

I have a string like this: John \\n Barber now I want to replace \\n with actual new line character so it will become

John

Barber<

Answer 1

You need to do:

replaceAll("\\\\n", "\n");

The replaceAll method expects a regex in its first argument. When passing 2 \ in java string you actually pass one. The problem is that \ is an escape char also in regex so the regex for \n is actualy \\n so you need to put an extra \ twice.