Source Code : Find directories

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Find directories

  
/*
   This program is a part of the companion code for Core Java 8th ed.
   (http://horstmann.com/corejava)

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

import java.io.File;
import java.io.IOException;

/**
 * @version 1.00 05 Sep 1997
 * @author Gary Cornell
 */
public class FindDirectories
{
   public static void main(String[] args)
   {
      // if no arguments provided, start at the parent directory
      if (args.length == 0) args = new String[] { ".." };

      try
      {
         File pathName = new File(args[0]);
         String[] fileNames = pathName.list();

         // enumerate all files in the directory
         for (int i = 0; i < fileNames.length; i++)
         {
            File f = new File(pathName.getPath(), fileNames[i]);

            // if the file is again a directory, call the main method recursively
            if (f.isDirectory())
            {
               System.out.println(f.getCanonicalPath());
               main(new String[] { f.getPath() });
            }
         }
      }
      catch (IOException e)
      {
         e.printStackTrace();
      }
   }
}

   
    
  

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