set JTextPane to max possible size

public class FileView extends JPanel {
    private ModelInterface model;
    private JTextPane textPane = new JTextPane();
    // creating TextPane
    public FileView(ModelInterface model) {
          this.model = model;
        
          add(textPane);

          refreshFile();
        
    }
    ...

    // thats how I append new lines to the TextPane. TextPane can also be modified from client view
    private void appendToPane(JTextPane textPane, String msg, Color c)
    {
        StyleContext sc = StyleContext.getDefaultStyleContext();
        AttributeSet aset = sc.addAttribute(SimpleAttributeSet.EMPTY, StyleConstants.Foreground, c);

        aset = sc.addAttribute(aset, StyleConstants.FontFamily, "Lucida Console");
        aset = sc.addAttribute(aset, StyleConstants.Alignment, StyleConstants.ALIGN_JUSTIFIED);

        int len = textPane.getDocument().getLength();
        textPane.setCaretPosition(len);
        textPane.setCharacterAttributes(aset, false);
        textPane.replaceSelection(msg);
    }
}