Question

I may be missing something obvious in the JFileChooser API, but when I try and use a JFileChooser to save a file, I can only select pre-existing files to save to, not enter a new name and save to that. Is that even possible with a JFileChooser or should I be using a different API?

I have this code to try and do what I’m attempting:

public static File getUserFile() {      
    final SaveFileChooser fc = new SaveFileChooser();

    fc.setAcceptAllFileFilterUsed(false);

    for(FileFilter ch : FileFilterUtils.getAllFilters()) {
        fc.addChoosableFileFilter(ch);
    }       

    int option = fc.showSaveDialog(JPad.getFrame());

    if (option == JFileChooser.APPROVE_OPTION) {
        return fc.getSelectedFile();
    } 
    return null;
}

public static class SaveFileChooser extends JFileChooser {
    private static final long serialVersionUID = -8175471295012368922L;

    @Override
    public void approveSelection() {
        File f = getSelectedFile();
        if(f.exists() && getDialogType() == SAVE_DIALOG){
            int result = JOptionPane.showConfirmDialog(JPad.getFrame(), "The file exists, overwrite?", "Existing file", JOptionPane.YES_NO_CANCEL_OPTION);

            switch(result){
            case JOptionPane.YES_OPTION:
                super.approveSelection();
                return;
            case JOptionPane.NO_OPTION:
                return;
            case JOptionPane.CLOSED_OPTION:
                return;
            case JOptionPane.CANCEL_OPTION:
                cancelSelection();
                return;
            }
        }
    }
}

Answer 1

Check your if condition:

if(f.exists() && getDialogType() == SAVE_DIALOG)

What happens if f doesn’t exist (which is what you would like to be possible)?

You could try:

if(getDialogType() == SAVE_DIALOG) {
    if(f.exists()) {
        // your overwrite checking
    } else {
        super.approveSelection();
        return;
    }
}