I have jsp oage which upload form data and file upload also same time. But i got java.io.FileNotFoundException: when there isn't file upload - forms

Question

boolean isMultipart = ServletFileUpload.isMultipartContent(request);
if (isMultipart) {
System.out.println("multipart2");
// Create a factory for disk-based file items
FileItemFactory factory = new DiskFileItemFactory();
// Create a new file upload handler
ServletFileUpload upload = new ServletFileUpload(factory);
try {
// Parse the request
List /* FileItem */ items = upload.parseRequest(request);
Iterator iterator = items.iterator();
while (iterator.hasNext()) {
FileItem item = (FileItem) iterator.next();
if (item.isFormField()) //your code for getting form fields
{
if (item.getFieldName().equals("btn")) {
if (item.getString().equals("Submit")) {
String name = item.getFieldName();
String value = item.getString();
System.out.println("test2" + name + value);
}
if (item.getString().equals("Save as Draft")) {
System.out.println("hii hii2");
String name = item.getFieldName();
String value = item.getString();
}
}
} if (!item.isFormField()) {
String fileName = item.getName();
System.out.println("File Upload Named : " + fileName);
String root = getServletContext().getRealPath("/");
File path = new File(root + "/uploads");
if (!path.exists()) {
boolean status = path.mkdirs();
}
File uploadedFile = new File(path + "/" + fileName);
// System.out.println(uploadedFile.getAbsolutePath());
item.write(uploadedFile);
}
}
} catch (FileUploadException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
response.sendRedirect("/EventCalendar-war/pages/user_pages/user_create_event.jsp");
}
This is my code.When there is no file to upload I got java.io.FileNotFoundException .If file is upload with form data it's work fine.What is wrong with my code?