Problem with folders in tomcat!

[franksniper]

Hi guys!!!!
Well, I'm doing a file upload in the form and send to create a folder called upload in the root folder of my project ...

About 3 minutes later, the folder disappears.
What it seems that the folder is being created as temporary and after a while without using it disappears ...

D:\Documents and Settings\Desktop\apache-tomcat-6.0.35\wtpwebapps\scb\upload

Since this happened to anyone?
Do you have any configuration that must be done in tomcat?

public String execute(){

		//TODO Validar envio de arquivo
			
		String filePath = servletRequest.getSession().getServletContext().getRealPath("/");
		String imagemCrop = StringUtils.stripAccents(userImageFileName).replace(" ", "_");
		
		final File file = new File(filePath+"\\upload");
		if(!file.exists()){
			file.mkdir();
		}
		copyFile(userImage, new File(file.getAbsolutePath()+"\\"+ imagemCrop));			
		
		new PublicacaoDAO().adiciona(publicacao, imagemCrop);
		addActionMessage("Publicação cadastrada com sucesso");
		return "ok";

	}