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Thread: Tableview custom button not responding

  1. #1
    Junior Member
    Join Date
    Oct 2020
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    Default Tableview custom button not responding

    so i havebuilt my interface which is made up of a TableView which is populated from Mysql database. the database has fields as ItemID(int), ItemName(varchar)and Fil(BLOB). my tableView has an additional column called 'action' which has a download button such that when clicked, the file should be downloaded and saved in the user's prefered location. Here's the code
     FileDownloadButton.setOnAction(e -> {
                                            Item chosenItem = getTableView().getItems().get(getIndex());
                                            File file = new File(chosenItem.getPaperName());
                                            try {
                                                String filequery = "Select File from items Where" + "itemID" + " = " + chosenItem.getId();
                                                PreparedStatement pst = connection.prepareStatement(filequery);
                                                ResultSet rs = pst.executeQuery();
                                                FileOutputStream fileout = new FileOutputStream(file);
                                                while (rs.next()) {
                                                    InputStream fileinput = rs.getBinaryStream("file");
                                                    byte[] buffer = new byte[1024];
                                                    while (fileinput.read(buffer) > 0) {
    the problem is when i click the download button, nothing happens.
    kindly help.
    thank you

  2. #2
    Super Moderator Norm's Avatar
    Join Date
    May 2010
    Eastern Florida
    Thanked 2,636 Times in 2,586 Posts

    Default Re: Tableview custom button not responding

    Please make a small, complete version of the program that compiles and executes to test the problem.
    If you don't understand my answer, don't ignore it, ask a question.

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