Storing data in files in java

[ajse]

Hi all,

If my application can not establish connection with the server it is storing 8000 records(25 columns) in files.After connection with the server resumes it sends those records to server one by one .I want to know how should I store records in files?Means to say which file format should i use?One thing I am also not getting that how i should synchronize this operation so that when database comes up ,records will be sent one by one.I am using web services to send the
records to server.

Thanx in advance.
With regards, Ajse

[sjalle]

Seems lik eyou could benefit from sending the records in one zipped binary "lump".
and unzip/update at the sever side.