// Method to saveFile().
private void saveFile() {
// If a file name is returned.
if (fileName != null) {
// Try block to throw a custom exception.
try {
// Save file.
FileIO.saveFile(this, fileName, sender.getText());
} // End of try to get message.
catch (BufferEmptyException e) // Catch InvalidFileReference.
{
// Capture the stack trace into a String.
setExceptionString(e.fillInStackTrace());
// Pass message to the JOptionPane manager.
setExceptionPane(
"There is nothing in the sender panel to write.\n\n"
+ "Do you want to see the stack trace?");
} // End of catch on BufferEmptyException.
} // End of if a fileName is selected.
} // End of saveFile() method.
