How to force Java to use Unix file separators on Windows?

Question

I have a simple code

String staticDir = f.getCanonicalPath() + "/src/main/webapp/static/";

On Windows it will return for me "C:\Temp/src/main/webapp/static/".

How to force Java to use "/" instead of "\"?

I have tried

System.setProperty("file.separator", "/");
String staticDir = f.getCanonicalPath() + "/src/main/webapp/static/";

but it doesn't solved issue for me.

Thank you!

Yeah, I have another lib, that will process that path. And that function only accepts "/" separators. — Arthur
– Arthur, Commented Jul 18, 2017 at 13:02
I think you should try to get file:///c:/ URI instead. stackoverflow.com/a/2466408/2308683 — OneCricketeer
– OneCricketeer, Commented Jul 18, 2017 at 13:07
Are you in fact trying to create a URI? Because if you are, changing the file separator to / is not the correct way to do it. — VGR
– VGR, Commented Jul 18, 2017 at 14:42

Olivier Grégoire · Accepted Answer · 2017-07-18 13:09:15Z

2

Just replace the path separator with the expected one:

String dir = f.getCanonicalPath().replace(System.getProperty("file.separator"), "/")
             + "/src/main/webapp/static/";

If you can, favor Java 7+'s java.nio.file.Path. There, the notion of path separator disappears until you call toString(). But very few libraries use this and still use File or even, worse, String.

If the library you're using still does it by the mean of strings, it probably means they're splitting manually on /. Maybe it's time to tell them to upgrade?

edited Jul 18, 2017 at 13:09

answered Jul 18, 2017 at 13:03

Olivier Grégoire

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2 Comments

Arthur Over a year ago

That's YUICompressor ( github.com/yui/yuicompressor ) - it is not updated for a long time...

Arthur Over a year ago

That bug is not fixed from 2013 ))) github.com/yui/yuicompressor/issues/111

Arthur · Accepted Answer · 2017-09-10 13:22:33Z

0

In my case it was a bug in the library, that I use - https://github.com/yui/yuicompressor/issues/111 .

That's why all suggested solution didn't solved issue for me.

answered Sep 10, 2017 at 13:22

Arthur

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