Ignoring the line break in regex?

Question

I have below content in text file

  some texting content   Test

I read it from

Answer 1

By default, the . character will not match newline characters. You can enable this behavior by specifying the Pattern.DOTALL flag. In String.replaceAll(), you do this by attaching a (?s) to the front of your pattern:

expectedString = inputString.replaceAll("(?s)\\", 
    "NewContent");

See also Pattern.DOTALL with String.replaceAll