Unable to delete the file. (Some times deletes and sometime fails to delet)

Question

Please help me in deleting the file from the temporary location .
Below is my code
//Append the session is with filename as there is possibility of having same name of file.
try{
boolean isMultipart     = ServletFileUpload.isMultipartContent(request);
          if (isMultipart)
               // Create a factory for disk-based file items
               factory = new DiskFileItemFactory();
                        // Create a new file upload handler
               upload = new ServletFileUpload(factory);
               // Parse the request
                  List /* FileItem */ items = upload.parseRequest(request);
                       // Process the uploaded items
               Iterator iter = items.iterator();
if(strInputFileName.lastIndexOf("\\")== -1)
     strInputFileName = (String)mPropBag.get("TempUploadDirM") + strInputFileName;
  }else
     strInputFileName = (String)mPropBag.get("TempUploadDir") +   strInputFileName.substring(strInputFileName.lastIndexOf("\\"));
strInputFileName = strInputFileName + "_" + request.getSession().getId();
uploadedFile     = new File(strInputFileName);
item.write(uploadedFile);  //// I am Writing the file in this location appened with the session Id because there might //be a  possibility of having same name of file.
catch(......)
finally
     uploadedFile.delete();
     uploadedFile = null;
     upload = null;
}I am unable to delete the file from the temporary location
some times it is deleting and some times it is not deleting.. I have also tried ...deleteOnExit();

Answer 1

Make sure you've got no other processes holding onto it (Windows Explorer, for instance) and that you've closed any streams involved with the file. If that fails, try calling System.gc() just before deleting the file. This is a workaround for a bug in certain JVMs on Windows machines