Java URL separator or File.separator

Question

I have checked similar qestions where they suggested to use String as a parameter. But that is what I do.

My Code:

 uri.lastIndexOf(File.separator)

Where uri is: file:/C:/Users/oto@increase.dk/workspace/Maersk_Line_GaTracking/bin/

Maybe that is because Windows uses back slashes as file separator. But why then, when I retrieve the URI, I am getting forward slashes?

String uri = DataRetrieval.class.getProtectionDomain().getCodeSource().getLocation() + "";

File.separator: Character that separates components of a file path. This is "/" on UNIX and "\" on Windows. Details: https://docs.oracle.com/javase/tutorial/essential/environment/sysprop.html — Aaditya Gavandalkar, Jan 05 '16 at 14:42
Detailed answers here: http://stackoverflow.com/questions/1589930/so-what-is-the-right-direction-of-the-paths-slash-or-under-windows — Aaditya Gavandalkar, Jan 05 '16 at 14:57

score 3 · Accepted Answer · answered Jan 05 '16 at 14:45

3

CodeSource.getLocation()

returns an URL object.

Separators in URLs are forward slashes.

answered Jan 05 '16 at 14:45

Arnaud

17,229
3
31
44

score 3 · Answer 2 · answered Jan 05 '16 at 14:56

There's a difference between file names and URIs. File names use \ as a separator on Windows, but URIs always use /.

So if you're splitting file names, search for File.Separator, and if you're splitting URIs, search for '/'

OH, I should mention: / also works as a separator in most windows APIs, so for filenames, it's usually a good idea to map all the forward slashes to File.Separator before you start messing with it.

score 1 · Answer 3 · answered Jan 05 '16 at 14:46

1

URIs are defined to use / as their component separator.

answered Jan 05 '16 at 14:46

martinez314

12,162
5
36
63

Java URL separator or File.separator

3 Answers3