Java.io.File only returns similar file names

Question

I have written a bean which reads a directory and places the file names in an array, which can be accessed by a JSP page. At first, the files inside the directory were named wb_1.jsp, wb_2.jsp, wb_3.jsp and so on. When I change a filename to something like work.jsp, it still appears in the file list, but when I rename it to something like identify.jsp, it doesn't!
If I count the array, it does read the correct number of files.
Class FileHandler
// Imports
import java.io.File;
// Class
public class FileHandler
     // Constants and variables
     public File dir;
     public File[] files;
      * Returns the number of files found inside the given directory
     public int showFiles()
          try
               setDir(getDir());     // Get file directory as set in the bean property
               files = dir.listFiles();     // List the files found inside the directory
          catch (Exception e)
               System.out.println(e + " : No files found to return a value");
          return files.length;      // Return the number of files
      * Returns the file name by using the in value in the files array
     public String returnFileName(int in)
          return files[in].getName();     // Return the name of the file
      * Sets dir file type to the setproperty value in
     public void setDir(File in)
          dir = in;     // Set class variable value for dir
      * Returns the dir value
     public File getDir()
          return dir;     // Return the setproperty value for dir
}And the JSP code which reads the array
out.println("<select onChange=\"jumpMenu('top',this,0)\" size=\"5\" style=\"width: 200\"");
String fileName = new String();
for(int x=0; x<file.showFiles(); x++)
     fileName = file.returnFileName(x);
     out.println("<option selected value=\"beheer.jsp?action=2&file=" +  fileName + "\">" +  fileName +"</option>");
out.println("</select>");

Answer 1

I forgot bean properties im the above code lines. Here it is, just in case.
<jsp:useBean id="file" class="FileHandler" scope="page" />
<jsp:setProperty name="file" property="dir" value="C:\\IBM Websphere workspace\\Project\\Web Content\\WEB-INF\\include" />