show progress bar for file upload

Hi,

I have to show progress bar while the file is uploading? the progress bar should show the information 1%,2%.8%.87%.100%

we can call a ajax method which will upload the file in the database? but how to identify the progress %
RockingAsked:
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krakatoaCommented:
For Java swing : JProgressBar.getPercentComplete()
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rrzCommented:
What are  you using to parse the request?
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RockingAuthor Commented:
simple servlet which will insert the file in database through ajax
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rrzCommented:
You could do something similar to what is done at
http://www.avajava.com/tutorials/lessons/how-do-i-monitor-the-progress-of-a-file-upload-to-a-servlet.html?page=1   
It would be easier to use what they used  to parse:  
http://commons.apache.org/proper/commons-fileupload/   
Anyway, you could call the progress listener through AJAX. You wouldn't have to have separate page like they did there.
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