// Method to open a file for sequential read-only.
private void openFile() {
// Define local primitive(s).
String contents = new String();
// If a file is open, prompt to save the file before dismissing content
// and reference.
if (!file.toString().equals("")) {
// Close the existing file.
closeFile();
} // End of if file not null or not equal to a zero String.
// Open a file.
fileName = FileIO.findFile(this);
// If a file name is returned.
if (fileName != null) {
// Read file.
contents = FileIO.openFile(this, fileName);
// Verify that the JTextAreaPanel is empty.
if (sender.isTextAreaEmpty()) {
// Set JTextAreaPanel.
sender.setText(contents);
} // End of if JTextAreaPanel is empty.
else {
// Reset JTextAreaPanel by replacing the range.
sender.replaceRange(contents, 0, sender.getText().length());
} // End of else JTextAreaPanel is not empty.
// Set file open flag to true.
fileOpen = true;
} // End of if a fileName is selected.
} // End of openFile method.
// Method to saveAsFile().
private void saveAsFile() {
// Set a file.
fileName = FileIO.nameFile(this);
// If a file name is selected.
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 saveAsFile() method.