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Tar through java

Posted on 2004-08-18
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Last Modified: 2012-05-05
I need to tar a text file through java using the UNIX tar. I tried using the Java class to compress the file, but the .tar.gz file generated cannot be decompressed. Is there a way or command I can execute so that I use the unix os tar command to compress the files.

Will be grateful if you could provide samples.

Thanks and regards
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Question by:kohonen
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12 Comments
 
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Expert Comment

by:CEHJ
ID: 11828960
>>I tried using the Java class to compress the file

Which one?
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Accepted Solution

by:
girionis earned 172 total points
ID: 11828962
Use the following:

Runtime.getRuntime.exec("tar -xvf mytar.tar");
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Expert Comment

by:girionis
ID: 11828964
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Assisted Solution

by:TimYates
TimYates earned 164 total points
ID: 11828980
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LVL 86

Assisted Solution

by:CEHJ
CEHJ earned 164 total points
ID: 11828983
You  may be better running an Ant task:

http://ant.apache.org/manual/CoreTasks/tar.html
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LVL 35

Expert Comment

by:TimYates
ID: 11828991
I use that tar package, and it seems to work fine :-)

Use it like Zip in java (write a TarEntry to a TarArchive object)
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LVL 35

Expert Comment

by:TimYates
ID: 11828997
> but the .tar.gz file generated cannot be decompressed

?!  Then, just write the tar file through a GZipOutputStream...  that doesn't work?

It should... (and it works the other way in my app)
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LVL 35

Expert Comment

by:girionis
ID: 11829001
Bah... Tim I was ready to post the same link too :)
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Expert Comment

by:TimYates
ID: 11829056
:-)
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