Java - Access is denied java.io.FileNotFoundException

Question

I have the following code:

List<FileItem> items = uploadHandler.parseRequest(request);
for (FileItem item : items) {
    if (!item.isFormField()) {
        File file = new File("D:/Data");
    }
}

When I am trying to save a file, I am getting the following error

java.io.FileNotFoundException: D:\Data (Access is denied.)

What could be the reason and how can I resolve this? I do have read and write permission on this folder.

I would guess it is because you try to open the same file on each iteration of your `for` loop. — Francis, Oct 24 '13 at 09:01
It's difficult to say without seeing the code which actually saves the file, or without code that will compile and reproduce the problem, but I'm guessing maybe the file already exists (or a directory exists with that name)? Also, note that on Windows files are not case sensitive. — Mikkel Løkke, Oct 24 '13 at 09:03
you should use File.separatorChar to make your code as per standard instead os using '/' or '\'. — sudmong, Oct 24 '13 at 09:08
No line of the above code can throw a `FilNotFoundException`. Where exactly does the exception being thrown and what is the code around it? — jboi, Oct 24 '13 at 09:10

score 105 · Accepted Answer · edited Jun 30 '18 at 17:45

105

When you create a new File, you are supposed to provide the file name, not only the directory you want to put your file in.

Try with something like

File file = new File("D:/Data/" + item.getFileName());

edited Jun 30 '18 at 17:45

Neuron

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answered Oct 24 '13 at 09:05

Julien

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Just a note, the opposite can also be true. I once wrote a directory as a file to a zip and when unzipping I got this error (because that directory already existed) – hayden.mumm Apr 06 '23 at 13:49

score 22 · Answer 2 · edited Jan 08 '18 at 23:20

22

Not exactly the case of this question but can be helpful. I got this exception when i call mkdirs() on new file instead of its parent

File file = new java.io.File(path);
//file.mkdirs(); // wrong! 
file.getParentFile().mkdirs(); // correct!
if (!file.exists()) {
    file.createNewFile();
}

edited Jan 08 '18 at 23:20

Neuron

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answered Dec 14 '14 at 18:06

Yuriy N.

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score 8 · Answer 3 · edited Jan 08 '18 at 23:22

8

I have search for this problem and i got the following answers:

"C:\Program Files\Apache-tomcat-7.0.69\" remove the extra backslash (\)
Right click the log folder in tomcat folder and in security tab give this folder as a write-permission and then restart the net-beans as an run as administrator.

Your problem will be solved

edited Jan 08 '18 at 23:22

Neuron

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answered May 18 '16 at 17:48

1

I just had to remove the end backslash – Saikat May 02 '18 at 16:52
From which place should I remove backslash? – Daniel Galion Feb 03 '21 at 13:51

score 6 · Answer 4 · edited Oct 25 '15 at 10:44

You need to set permission for the user controls .

Goto C:\Program Files\
Right click java folder, click properties. Select the security tab.
There, click on "Edit" button, which will pop up PERMISSIONS FOR JAVA window.
Click on Add, which will pop up a new window. In that, in the "Enter object name" box, Enter your user account name, and click okay(if already exist, skip this step).
Now in "PERMISSIONS OF JAVA" window, you will see several clickable options like CREATOR OWNER, SYSTEM, among them is your username. Click on it, and check mark the FULL CONTROL option in Permissions for sub window.
Finally, Hit apply and okay.

This is changing the permissions on the Java executables themselves. There's no reason to do this. — Harry Johnston, Feb 01 '17 at 04:49

score 4 · Answer 5 · edited Jan 08 '18 at 23:19

4

Make sure that the directory exists, you have permission to access it and add the file to the path to write the log:

File file = new File("D:/Data/" + item.getFileName());

edited Jan 08 '18 at 23:19

Neuron

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answered May 18 '16 at 18:03

Stepan

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Java - Access is denied java.io.FileNotFoundException

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