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how to get file count in servlets or jsp

Posted on 2009-05-09
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Last Modified: 2013-11-24

hi i want to know how to get no.of files in a directory.

of course i use this code
 int filecount=new File("images/ln/headings").listFiles().length;  
 to find the no.of files in the images/ln/headings directory. but i get always returns value 8 even the ./headings folder contains 10 or 20 files.

my doubt is this .class file is in app/WEB-INF/classes folder, but my targeted file is in app/images/ln/headings folder. so how can i use the above code to getting the file count in images/ln/headings folder..
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Question by:haneefnb
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Expert Comment

by:objects
ID: 24342743
its not where the class file is, it is where it is run from
use the absolute path to make sure you get the right directory
If its inside a webapp you can use the following to get the actual path of a file in the webapp

http://helpdesk.objects.com.au/java/how-to-get-the-path-of-a-file-in-a-web-application

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Author Comment

by:haneefnb
ID: 24343067
thanks for u r reply

but what about the jsp code so please provide the jsp code for solving above problem

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Accepted Solution

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CEHJ earned 2000 total points
ID: 24343499
In JSP you could do the following but don't forget 'filecount' will count directories too


 int filecount=new File(application.getRealPath("images/ln/headings")).listFiles().length;  

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LVL 92

Expert Comment

by:objects
ID: 24346027
> but what about the jsp code so please provide the jsp code for solving above problem

would be exactly the same, no need to change anything.


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Expert Comment

by:CEHJ
ID: 24421521
The solution was provided in the question
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Expert Comment

by:objects
ID: 24421556
I provide the solution here, what problem did you have with it?

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Expert Comment

by:CEHJ
ID: 24421579
You wanted to know how to do this in jsp - i showed you at http:#24343499
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LVL 92

Expert Comment

by:objects
ID: 24421653
was answered in my first post

its not where the class file is, it is where it is run from
use the absolute path to make sure you get the right directory
If its inside a webapp you can use the following to get the actual path of a file in the webapp

http://helpdesk.objects.com.au/java/how-to-get-the-path-of-a-file-in-a-web-application


What problem did you have with it?

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LVL 92

Expert Comment

by:objects
ID: 24421742
which just copied what I already posted, nice work

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by:CEHJ
ID: 24421957
:-)
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