Java.Io.Ioexception: Permission Denied Cannot Create File

java.io.IOException: Permission denied cannot create file in Linux

You are using a shared tmp directory, so I think the proper thing to do is to give it a proper permission:

chmod 1777 /opt/ie/var/tmp

P.S. I got 1777/drwxrwxrwt using stat /tmp from a Linux Mint system. The t is restricted deletion flag or sticky bit (t).

java.io.IOException: Permission denied cannot create file

As in the Android Documentation, you need to write to the external storage, you must request the WRITE_EXTERNAL_STORAGE permission in your manifest file:

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
   ...
</manifest>

If you use API 23 (Marshmallow) and above, you need to Requesting Permissions at Run Time because it's a Dangerous Permission.

java.io.IOException: Permission denied for createNewFile()

You can create your PDF file using the following code :

  final String fileName = getString(R.string.app_name) + (new Date().getTime()) + ".pdf";
        if (Build.VERSION.SDK_INT >= 29) {
            String filePath = PathUtils.getExternalAppDownloadPath().concat("/").concat(fileName);
            boolean isSuccess = FileUtils.createOrExistsFile(filePath);
            if (isSuccess) System.out.println("Successfully created file with name - " + fileName);
            else System.out.println("Something went wrong!");
        } else {
            String filePath = PathUtils.getExternalDownloadsPath().concat("/").concat(fileName);
            boolean isSuccess = FileUtils.createOrExistsFile(filePath);
            if (isSuccess) System.out.println("Successfully created file with name - " + fileName);
            else System.out.println("Something went wrong!");
        }

The used library : implementation 'com.blankj:utilcodex:1.29.0'

OR

(Not recommended) use : android:requestLegacyExternalStorage="true" inside the Application Tag in your AndroidManifest.XML

Permission Denied: File Creation in Java

Can anyone tell me why that is?

Your user doesn't have permission to create a file in that directory.

Is there any way to change the permissions?

The same way you would change the permissions of any directory.

In Java 7+

Files.setPosixFilePermisions(f1.toPath(), 
    EnumSet.of(OWNER_READ, OWNER_WRITE, OWNER_EXECUTE, GROUP_READ, GROUP_EXECUTE));

And if I were to compile this as a .jar file and send it to someone, would that person have the correct permissions?

I suspect the correct permissions for a directory called /System is that you NOT have write access.

Is there any reason not to use the home directory or the current working directory?

java.io.IOException: Permission denied in Java

To create a File into the same folder in your project, your path has to be relative.

The path that you are giving is absolute, because it is starting from /. For your path to be relative, remove / from the path and try this :

File file = new File("textfile.txt");

Permission Denied Error when Creating file in Java/Springboot - Tomcat

Ensure that you have read and execute access to all parent directories as well.

Example:

chmod o+x /opt

Permission denied error while Creating new File | Android

If your device is working on Android 6 or higher have you already requested runtime permissions?

See https://developer.android.com/training/permissions/requesting.html for more details.

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