Java - default filename.ext in saveDialog

[Yakisoba]

I have a save dialog box that seems to work except for a couple issues:

1) when the save dialog first opens I want a default filename "testing.txt" to appear in the filename field.
How do I make this happen?
(currently trying "setSelectedFile(new File("FileName"));", but no luck yet)

2)How can I make the file ALWAYS save as .txt by default?

any suggestions are greatly appreciated.

below is the code for my save button:

            String messageCont = outTextArea.getText();
            
            /*create file chooser*/
            final JFileChooser fc = new JFileChooser();
            /*attache the file chooser to the Frame and detect OK or Cancel*/
            int returnVal = fc.showSaveDialog(HanoiFrame.this);
            //fc.setSelectedFile();
            File file = fc.getSelectedFile();
            //File file = fc.setSelectedFile(new File("testing.txt"));

            
            
            if (returnVal == JFileChooser.APPROVE_OPTION) {

                try {
                    /*if OK write the file*/
                    BufferedWriter output = new BufferedWriter(new FileWriter(file.getPath() + file.getName()));

                    output.write(messageCont);
                    output.close();
                    
                } catch (IOException ex) {
                    
                    ex.printStackTrace();
                }
            } else {
                
                /*cancel*/
                return;
                
            }

Thanks.

YaK

[Aradon]

Now, I haven't done this before, but you may have to use a File Filter such as:

FileNameExtensionFilter

But I don't know how that'll work with the save Dialog.