[jcifs] couldn't get UNC path

[adf afdf]

I tried to use the following the code to get a file's
UNC path. But it didn't work.

File f = new File("O:\path\file.txt");
SmbFile s=new SmbFile(f.toURL());
String path = SmbFile.getUncPath();

It will give me like:
path = \\\O:\path\file.txt

any thing wrong?

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