Question

I need to set the permission to read a file to a specific user of the operating system, how can I do this in Java?

Edit:
The file will be created with permissions just to the user running the application, than it needs to set read permission to a single user, other users will not have the permissions to read the file.

Answer 1

if you want to change file permissions on old Java versions like Java 5, you can use this:

Runtime.getRuntime().exec("chmod 000 " + PATH + fileName);

on windows you’ll have to replace chmod with the appropriate CACLS.exe command syntax