Folder and file are not getting created by Java code under Linux, but it works for Windows

Question

I have a few questions about Java's io.file class

Linux: does the file seperator operator '//' work or do we need to use '\'?
In red hat there is no drive partion name so how to give the Linux equivalent of the Windows path 'c://TempFolder//Images//'?

Linux file system has a single root - / Even NTFS volumes are mounted are under that root. The file separator on Linux is '/'. Some Java software will work with '/' on both OS systems. However, in Windows, the proper representation is '\\' — Akber Choudhry
– Akber Choudhry, Commented Mar 19, 2014 at 19:04

Renato · Accepted Answer · 2014-03-19 19:05:48Z

3

You can use the static field File.separator or, better, use the nio Paths class like this:

File f = Paths.get( "dir1", "dir2", "dir3" ).toFile();

To get something to refer to the absolute path, start the String arguments with a File.separator, which you might get also with nio with this method:

http://docs.oracle.com/javase/7/docs/api/java/nio/file/FileSystem.html#getSeparator%28%29

answered Mar 19, 2014 at 19:05

Renato

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Mayur Bhokase · Accepted Answer · 2017-04-20 14:25:04Z

2

Under Windows:

File file = new File("C:\\TempFolder\\Images");
File file = new File("C:/TempFolder/Images"); // Because Windows soemtimes is nice.

Under Linux:

File file = new File("/TempFolder/Images");

The reason having two backslashes (\\), is that in strings a backslash must be escaped: \t being a tab character etcetera.

There are no drive letters in Linux, if that was your question. For temporary files you might use File.createTemporaryFile or createTemporaryDirectory.

Directories on other computers may also be used without drive letters, but with UNC paths:

Windows:

\\Server\Directory\Directory
"\\\\Server\\Directory\\Directory"

Linux:

//Server/Directory/Directory

edited Apr 20, 2017 at 14:25

Mayur Bhokase

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answered Mar 19, 2014 at 19:21

Joop Eggen

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