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Directory Permissions problem when using mkdir() of the File class

Posted on 2008-06-17
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Last Modified: 2013-12-29
Hello,

I hava a Java application that creates directories using the mkdir() method of the File class. This is in UNIX. when the directory is created by madir() it has drwxr-xr-x permissions string by default. As you can see the user has r/w/ex permissions, and the group has only r/ex permissions and does not have 'write' permissions. Our requirement is, when this directory is created, we must give permissions to the group also for writing.

Since mkdir() defaults to drwxr-xr-x, how can I set the peremissions to be drwxrwxr-x so that the group will also have write permissions when the directory is created.

Thanks
prain
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Question by:prain
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7 Comments
 
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Accepted Solution

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CEHJ earned 250 total points
ID: 21802206
Two ways i can think of

1. set the umask of the shell in which the java app is running to 0002 (man umask)
2. Runtime.exec a chmod after the fact
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Author Comment

by:prain
ID: 21802333
is'nt there a direct Java way of doing that?
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Expert Comment

by:CEHJ
ID: 21802378
No. Java is platform independent, so would have no platform-dependent way of altering file perms
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Author Comment

by:prain
ID: 21802391
Ok. That' right. I will try this.
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Author Closing Comment

by:prain
ID: 31467929
OK. That works Great!.  Thanks.
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LVL 86

Expert Comment

by:CEHJ
ID: 21803985
:-)

Which way did you go in the end?
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Author Comment

by:prain
ID: 21807006
I set the permissions using chmod 775  by Runtime.exe();
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