Java Utililty Methods JFrame Parent

File location = locationIn;
if (location == null) {
    location = new File("default location");
File[] returnFile = new File[] { null };
JFileChooser fc = new JFileChooser(location);
fc.setDialogType(JFileChooser.OPEN_DIALOG);
fc.addChoosableFileFilter(nonMacFileFilter);
...

File selectedFile;
if (false) {
    FileDialog fd = new FileDialog(parentFrame, dialogTitle, FileDialog.SAVE);
    fd.setDirectory(directory);
    fd.setFilenameFilter(new FilenameFilter() {
        public boolean accept(File file, String string) {
            return string.toLowerCase().endsWith(fileExtension);
    });
    fd.setFile(fractionFileName);
    fd.setAlwaysOnTop(true);
    fd.setVisible(true);
    if (fd.getFile() != null) {
        selectedFile = new File(fd.getDirectory() + File.separator + fd.getFile());
    } else {
        selectedFile = null;
} else {
    JFileChooser fc = new JFileChooser();
    fc.setSelectedFile(new File(directory + File.separator + fractionFileName));
    fc.setFileFilter(nonMacFileFilter);
    fc.setDialogTitle(dialogTitle);
    int result = fc.showSaveDialog(new Frame());
    if (result == JFileChooser.APPROVE_OPTION) {
        selectedFile = fc.getSelectedFile();
        int response = 0;
        if (selectedFile.exists()) {
            response = JOptionPane.showConfirmDialog(null,
                    new String[] { "The file exists.", "Do you want to replace it?" }, "U-Pb Redux Warning",
                    JOptionPane.YES_NO_OPTION, JOptionPane.WARNING_MESSAGE);
            if (response == JOptionPane.NO_OPTION) {
                selectedFile = null;
    } else {
        selectedFile = null;
return selectedFile;

File selectedFile;
JFileChooser fc = new JFileChooser();
fc.setSelectedFile(new File(directory + File.separator + fractionFileName));
fc.setFileFilter(nonMacFileFilter);
fc.setDialogTitle(dialogTitle);
int result = fc.showSaveDialog(new Frame());
if (result == JFileChooser.APPROVE_OPTION) {
    selectedFile = fc.getSelectedFile();
...

if (inp == null)
    return null;
if (inp instanceof Frame)
    return (Frame) inp;
if (inp instanceof Component) {
    Component root = SwingUtilities.getRoot((Component) inp);
    if (root != inp)
        return buildParentFrame(root);
...

Rectangle parentBounds = parent.getBounds();
Dimension windowSize = win.getSize();
int x = (parentBounds.width - windowSize.width) / 2;
int y = (parentBounds.height - windowSize.height) / 2;
x = Math.max(0, x + parentBounds.x);
y = Math.max(0, y + parentBounds.y);
win.setLocation(x, y);

@SuppressWarnings("serial")
Action escAction = new AbstractAction(ESCAPE_ACTION_NAME) {
    public void actionPerformed(ActionEvent evt) {
        actListener.actionPerformed(evt);
};
escAction.putValue(Action.ACTION_COMMAND_KEY, ESCAPE_ACTION_NAME);
KeyStroke escKeyStroke = KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0, false);
...

ByteArrayOutputStream messageStream = new ByteArrayOutputStream();
PrintWriter out = new PrintWriter(messageStream);
error.printStackTrace(out);
out.close();
JTextField errorMsg = new JTextField(error.toString());
JTextArea errorText = new JTextArea(messageStream.toString());
JScrollPane textPane = new JScrollPane(errorText);
errorText.setEditable(false);
...

JDialog dialog = new JDialog(parentFrame, true);
dialog.setContentPane(progressBar);
dialog.setTitle(title);
char c = '\u012C';
byte byte0 = 50;
int x = (parentFrame.getX() + parentFrame.getWidth() / 2) - 150;
int y = (parentFrame.getY() + parentFrame.getHeight() / 2) - 25;
dialog.setBounds(x, y, 300, 50);
...

if (null != parent) {
    Component[] components = parent.getComponents();
    if (null == components) {
        return;
    if (components.length <= 0) {
        return;
    for (Component component : components) {
        if (null != component) {
            component.setEnabled(enable);

if (null != parent) {
    Component[] allComponents = parent.getComponents();
    if (null == allComponents) {
        return;
    if (allComponents.length <= 0) {
        return;
    for (Component component : allComponents) {
        if (null != component && components != null) {
            if (contains(component, components)) {
                continue;
            component.setEnabled(enable);