How do I resize the text inside my JScrollpane

I'm currently learning more about Java. I'm working on creating a GUI which is able to 'translate' amino-acid characters into their 3-letter codes.

I've got everything working as intended, but I'm still struggling to understand how I can resize the text inside my JScrollpane to not exceed the width. (Example in picture)

Do I just need to change some settings or maybe add '\n's to fit the JTextArea? Here's the code:

Thanks in advance!

private void createGUI() {
    Container window = this.getContentPane();
    window.setLayout(new FlowLayout());

    panel = new JPanel();
    inputField = new JTextField();
    startButton = new JButton("Convert to 3-letter code");
    display = new JTextPane();
    scroll = new JScrollPane(display);

    //CUSTOMIZE GUI OBJECTS
    inputField.setPreferredSize(new Dimension(200, 20));
    display.setPreferredSize(new Dimension(400, 300));
    startButton.addActionListener(this);

    //SETTING UP TEXTAREA
    display.setEditable(false);

    scroll.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
    scroll.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
    
    panel.setLayout(new BorderLayout());
    panel.add(scroll, BorderLayout.CENTER);
    //

    window.add(inputField);
    window.add(startButton);
    window.add(panel);
}

CodePudding user response：

Better use a JTextArea instead of a JScrollPane since the best that the JScrollPane can do is to dynamically resize (