When specified as File.exist ("C: \ tmp \ test") in Windows (local), the directory exists properly (true is returned)
Why is there a directory that does not exist (False) if I specify File.exist ("/ opt/test") in Centos?
Both should have directories ...
I would like to know if you know anything.

Applicable source code

File dir = new File ("/ opt/test");
// File dir = new File ("C: \\ tmp \\ test");
    If (! Dir.exists ()) {
        return "Dir Not Exist";
    }

Supplemental information (FW/tool version etc.)

Java Windows10 Centos7

Append

I'm not sure how to paste the image.
The actual source and the one presented here were slightly different.
I'm sorry that I put the full-width space in order to match the appearance.

The actual source is

It's like this, I didn't see it, but when I pasted it into a text editor

File dir = new File ("/ opt/scanup");
// File dir = new File ("C: \\ tmp \\ test \\ uptest");
        if (! dir.exists ()) {
            return "Dir Not Exist";
        }

It seems that tab is in the part that specifies the path like this.

Tabs deleted

File dir = new File ("/ opt/scanup");
// File dir = new File ("C: \\ tmp \\ test \\ uptest");
        if (! dir.exists ()) {
            return "Dir Not Exist";
        }

It worked as expected.