Replace directory path by manipulating string - Java [duplicate]

Question

This question already has answers here:

String replace method is not replacing characters (5 answers)

Closed 4 years ago.

How do i replace the directory path of a string? The original string is:

String fn = "/foo/bar/ness/foo-bar/nessbar.txt";

i need the output to look like:

/media/Transcend/foo-bar/nessbar.txt

I've tried the line below but it doesn't work

fn.replaceAll("/foo/bar/ness", "/media/Transcend");

Answer 1

You forget to rewrite variable:

String fn = "/foo/bar/ness/foo-bar/nessbar.txt";
fn = fn.replaceAll("/foo/bar/ness", "/media/Transcend");

Answer 2

Try this:

fn = fn.replaceAll("/foo/bar/ness", "/media/Transcend");

The replaceAll method returns a new String object, leaving the original object unmodified. That's why you need to assign the result somewhere, for example, in the same variable.

Answer 3

replaceAll somehow did not work for me, could not figure out why, i ended up something like this, though it replaces only first part of path.

String fn = "C:/foo/bar/ness/foo-bar/nessbar.txt";
Strign r = "C:/foo/bar/ness";
fn = "C:/media/Transcend" + fn.substring(r.length());