File exists but java file.exists() but return false

Question

As the title says, I'm checking if a file exists or not with java. The file is stored in

C:\Windows\System32.

If I run the project with Netbeans, no problem. It returns true.

But if I run the .jar, it returns false. I'm admin of the computer, but I don't know which privilege I have when I run the .jar.

Do you have any idea

'code' File dest = new File("C:\\Windows\\System32\\" + myFile); — 10h02, Mar 02 '15 at 13:30
You should [edit that code into the question body](http://stackoverflow.com/posts/28810714/edit) ideally - code in comments tends to get missed. — J Richard Snape, Mar 02 '15 at 13:57

score 3 · Accepted Answer · answered Mar 02 '15 at 13:20

3

Try to run cmd.exe as an admin and then run your .jar from this cmd. Being an admin does not mean you are starting your apps with admin privilege.

answered Mar 02 '15 at 13:20

pepan

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That's it! If I don't run the cmd.exe as admin, it still returns false. But if I run it as an admin, it returns true! So how can I run my jar file with admin privilege? – 10h02 Mar 02 '15 at 14:30
That has been already answered before; see here [link](http://stackoverflow.com/questions/1385866/java-run-as-administrator) – pepan Mar 02 '15 at 14:34

score 3 · Answer 2 · edited Mar 02 '15 at 14:06

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According to this Oracle tutorial, you should check also Files.notExists - if it returns false, too, your program failed to verify the existence of the file.

edited Mar 02 '15 at 14:06

Nic

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answered Mar 02 '15 at 13:27

Binkan Salaryman

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That should be `Files.notExists` ... `File` and `Files` are different classes. – Stephen C Mar 02 '15 at 13:32
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If it is not a typo, it is an error. because `File.notExists` (sic) does not exist. (Sick :-) ) – Stephen C Mar 02 '15 at 13:59

score 0 · Answer 3 · answered Mar 02 '15 at 13:28

0

Maybe you have to run CMD as an administrator and then run your .jar file, like you didn't post the code we can't get a good idea about your issue.

answered Mar 02 '15 at 13:28

MeherHedhli

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File exists but java file.exists() but return false

3 Answers3