I can get a listing of all the files and directories contained within a specific directory. I am wondering what is the best way to get a listing of the contents of all the subdirectories. I am not sure how to go about this problem. I think that some recursion will be necessary. <br><br>Ultimately I want to create a text file that has the files listed in it with there particular attributes. I want to have the text file with each row having the following structure.<br><br>directory path ¦ file name ¦ file Size ¦ date created ¦ etc.<br><br>I am new to java, what would be the best approach to this problem, if I also wanted to be able to sort the text file by file name, if there where 100,000 entires or so. How would I go about this. I am familiar with sorting algorithms and such, but have never tried this before.<br><br>Any help is greatly appreciated.<br><br>fenris<br> <p> fenris<br><a href=mailto:fenris@hotmail.com>fenris@hotmail.com</a><br><a href= > </a><br> I am interested in Mining Software, as well as Genetic Algorithms.
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Directory listing including al Subdirectories? 1
- Thread starter fenris
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Hi!<br><br>Here is a simple example:<br><br>import java.io.*;<br><br>public class Tree {<br> static void processADir(String dir, String[] fl) {<br> File f;<br> int i=0;<br><br> if (fl!=null)<br> while (i<fl.length) {<br> f=new File(dir, fl<i>);<br> if (f.isDirectory())<br> processADir(f.getPath(), f.list());<br> else System.out.println(f); // or out to file<br> i++;<br> }<br> }<br><br> public static void main(String[] args) {<br> String startDir=".";<br><br> if (args.length==1) { startDir=args[0]; }<br> Tree.processADir(startDir, new File(startDir).list());<br> }<br>}<br><br>Good luck. Bye, Otto.<br>
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I just tried out your code and now I have a good idea on how to do this sort of thing, Thank you very much.<br>I had to modify it slightly to get it to compile. I changed the line: f = new File(dir, fl) to f = new File(dir, fl<i>)<br><br><br>I have another question, how would I store the contents of a directory to an array if it was not known how many elements the array was supposed to hold?<br><br>fenris <p> fenris<br><a href=mailto:fenris@hotmail.com>fenris@hotmail.com</a><br><a href= > </a><br> I am interested in Mining Software, as well as Genetic Algorithms.
I see them identical 
)).<br>>I had to modify it slightly to get it to compile. I changed the line: f = new File(dir, fl) to f = new File(dir, fl)<br><br>Put the results into a Vector first (addElement()), after process a dir make a new array with the length of Vector, and copy elements into it.<br><br>Bye, Otto.<br>
)).<br>>I had to modify it slightly to get it to compile. I changed the line: f = new File(dir, fl) to f = new File(dir, fl)<br><br>Put the results into a Vector first (addElement()), after process a dir make a new array with the length of Vector, and copy elements into it.<br><br>Bye, Otto.<br> - Thread starter
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Sorry about that my mistake, it should read:<br><br>f = new File(dir,fl<i>) <br>doh!<br><br>thank you for your help, it would have taken me along time to come up with the recursive directory listing.<br><br><br><br> <p> fenris<br><a href=mailto:fenris@hotmail.com>fenris@hotmail.com</a><br><a href= > </a><br> I am interested in Mining Software, as well as Genetic Algorithms.
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