Deleting a file using getParameter()

Question

<%
      File d = new File(dir);
      File[] files = d.listFiles();
      for (int i = 0; i < files.length; i++)
             filename=files.getName();
%>
<input name="delete_box" type="checkbox" value="<%=filename%>">
<%
String[] fileNames = getParameterValues("delete_box");
for (int j = 0; j < fileNames.length; j++)
String fileOne = new String(fileQ[i].toString());
for (int k = 0; k < files.length; K++)
i f (filename.equals(fileOne))
files[k].delete();
Please help! In the code above, I am trying to allow a user check a checkbox for files they want to delete. I am trying to put the checked files into a String array, then loop through the array and compare it to files stored on the hard drive, then delete the file when they are equal.
I'm not that familiar with using getParameter() and believe I am using it wrong as the code above does not delete the files. Any help would be greatly appreciated as I have been working on this for days.
thanks

Answer 1

The code looks ok to me - what you have shown of it.
As DrClap intimated, it would be better to split this into two parts.
One which displays the files/checkboxes (first request)
Another which handles the submission of that page (second request)
The problem I could see right now is that it would display all the current files, and then go through deleting some of them - so the ones you have displayed are now incorrect.
The best way to sort this out is to print out the values that you are retrieving - see if they are being got successfully from the form submission (I don't see a form, or submit button, but I presume they are present)
Cheers,
evnafets