Re: listing dirs in current webapp...

From:

Nigel Wade <nmw@ion.le.ac.uk>

Newsgroups:

comp.lang.java.help

Date:

Tue, 19 Feb 2008 17:42:45 +0000

Message-ID:

<fpf4el$jal$1@south.jnrs.ja.net>

maya wrote:

hi, I'm trying to detect subdirectories in current webapp, not sure how
to filter dirs from files that are not dirs.. found something here,
http://www.exampledepot.com/egs/java.io/GetFiles.html?l=rel

  File dir = new File("directoryName");

     String[] children = dir.list();
     if (children == null) {
         // Either dir does not exist or is not a directory
     } else {
         for (int i=0; i<children.length; i++) {
             // Get filename of file or directory
             String filename = children[i];
         }
     }

but it how do you tell it to filter dirs ONLY?????
   (once we do String[] children = dir.list(); we can't test for
isDirectory() anymore, since isDirectory() method cannot be applied to
strings..)

am simply trying to detect which files in current dir (i.e., current
webapp) are directories..

thank you...

Well, you could use the File(String) constructor and create a new File and
invoke the File.isDirectory() method on that. Or you could read the Javadocs
for File and find that it has a method listFiles() which returns a File[]
rather than a String[] ;-)

     File[] children = dir.listFiles();
     if (children == null) {
          // Either dir does not exist or is not a directory
     } else {
        for (File child:children) {
          if ( child.isDirectory() ) {
            // process the directory
          }
        }
     }

--
Nigel Wade, System Administrator, Space Plasma Physics Group,
            University of Leicester, Leicester, LE1 7RH, UK
E-mail : nmw@ion.le.ac.uk
Phone : +44 (0)116 2523548, Fax : +44 (0)116 2523555