java - permission denied error while reading/writing file by application(.jar) in mac

Question

I have created an application in swing also created an installer for the same application.

both installer and the application run perfectly on windows system.

but my problem is when i try to run it in mac os it is not run perfectly with all data.

I have found that in my application i have used ".xyz" type property files and directory to save some data, so in mac os "." prepended serve as hidden file.

it gives error like

Error: /Users/userxyz/Library/Application Support/.appdir/.propertydir/.logininfo (Permission denied)

java.io.IOException: Permission denied
    at java.io.UnixFileSystem.createFileExclusively(Native Method)
    at java.io.File.createNewFile(File.java:883)

Is there any one who have solution to resolve above error?

Answer 1

The problem is in Mac OS.

No, the problem is not having permission to write to the Library directory of userxyz. Java WebStart is usually more than sufficient, but you should at least follow the approach recommended in Technical Q&A QA1170: Important Java Directories on Mac OS X. Note the distinction between user preferences, user data and application support, each of which is rooted in System.getProperty("user.home"). Note also that, java.util.Preferences uses ~/Library/Preferences/your.qualified.name by default. In addition, there's no reason to use hidden file names.