Look for a method in the Java API for File called exists. If you are not getting a true for partial files then it could be that you have not yet physically written it out. In this case, you can check the length of that file (again File API). -Tim
-----Original Message----- From: Bikash Paul [mailto:[EMAIL PROTECTED]] Sent: Tuesday, March 12, 2002 3:47 AM To: [EMAIL PROTECTED] Subject: Newbie Question?? Hi all friends, Iam developing one application(front end swing , back end servlet and http protocol through urlconnection) for data transfer from one destination to another.And application have facility of suspend of one file in between and start another new file from scratch and can resume that file which is stopped in between later.Now for that I want to put condition in servlet so that it can recognise two situation:- 1.if it is new file it can write in the file and 2.if it is partial file it can append into the file by opening the file in append mode. But I couldn't decide what will be the syntax of condition.Can any one plz suggest me how i can put conditions.Any help will be highly appreciated.Below r my codes:- RecvServlet.java:- ================= public class RecvServlet extends HttpServlet { public static final String BASE_DIR = "d:\\temp"; File baseFile; public void init() throws ServletException { super.init(); baseFile = new File(BASE_DIR); } public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.sendError(response.SC_NOT_ACCEPTABLE, "Must use POST method."); } public void doPost(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException { String filename; filename = request.getParameter("name"); String path; path = request.getParameter("path"); File outfile = new File(filename); if (path != null && filename != null) { outfile = new File(path, filename); System.err.println("Final output file: " + outfile.getAbsolutePath()); } DataInputStream dis; dis = new DataInputStream(request.getInputStream()); OutputStream os; os = new BufferedOutputStream(new FileOutputStream(outfile)); int cc; byte [] buf = new byte[512]; long lim, tot = 0; lim = dis.readLong(); try { System.err.println("Reading " + lim + " bytes..."); for(cc = dis.read(buf, 0, 512); cc > 0 && tot < lim; cc = dis.read(buf, 0, 512)) { os.write(buf, 0, cc); tot += cc; System.err.print("+" + cc + "(" + tot + ")"); if (tot >= lim) break; } } catch (IOException ie) { try { os.close(); } catch (Exception e2) { } System.err.println("Exception during file transfer!"); } System.err.println("Read " + tot + " bytes."); os.close(); response.setContentType("text/plain"); PrintStream pos = new PrintStream(response.getOutputStream()); pos.println(tot); } } Regards Bikash __________________________________________________ Do You Yahoo!? Try FREE Yahoo! Mail - the world's greatest free email! http://mail.yahoo.com/ ___________________________________________________________________________ To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff SERVLET-INTEREST". Archives: http://archives.java.sun.com/archives/servlet-interest.html Resources: http://java.sun.com/products/servlet/external-resources.html LISTSERV Help: http://www.lsoft.com/manuals/user/user.html ___________________________________________________________________________ To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff SERVLET-INTEREST". Archives: http://archives.java.sun.com/archives/servlet-interest.html Resources: http://java.sun.com/products/servlet/external-resources.html LISTSERV Help: http://www.lsoft.com/manuals/user/user.html
