JFileChooser with confirmation dialog

user_190165 0
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I am working on a program that loads and saves data from text files, and I am asking the user a file name with JFileChooser on load and save.

This question is about the save dialog: new JFileChooser().showSaveDialog();. The user then could overwrite an existing file without any warning, and that would be a problem.

Any suggestion on how to fix this? I have been looking for some method or option, but I didn't found anything.

Thanks in advance.

confirmation swing java
5 Answers

As AvrDragon said, closing with X is not handled. I added a default case to handle all unrelevant options:

final JFileChooser fc = new JFileChooser() {

        private static final long serialVersionUID = 7919427933588163126L;

        public void approveSelection() {
            File f = getSelectedFile();
            if (f.exists() && getDialogType() == SAVE_DIALOG) {
                int result = JOptionPane.showConfirmDialog(this,
                        "The file exists, overwrite?", "Existing file",
                        JOptionPane.YES_NO_CANCEL_OPTION);
                switch (result) {
                case JOptionPane.YES_OPTION:
                    super.approveSelection();
                    return;
                case JOptionPane.CANCEL_OPTION:
                    cancelSelection();
                    return;
                default:
                    return;
                }
            }
            super.approveSelection();
        }
    };
user_4555780
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