trying for a Typewriter effect on a JTextPane [closed]

Question

i'm pretty new to coding (about 5 months) and i've been trying to make a custom terminal for a text based RPG. so far i have the terminal working the way it should but i'm looking for ways to rewrite the code to come up with a typewriter effect. here's the code i have for writing the text onto a JTextPane but the code i'm trying to merge doesn't work all too well since i do feel like i am missing something. i've tried searching for what but couldn't find too many answers.

package bp.display;

import java.awt.Color;

import javax.swing.text.Style;
import javax.swing.text.StyleConstants;

public class TextRender {
    
    public static void print(String s, boolean trace) {
        print(s, trace, new Color(255,255,255));
    }

    public static void print(String s, boolean trace, Color c) {
        Style style = Console.console.addStyle("Style", null);
        StyleConstants.setForeground(style, c);
        
        for(int i = 0; i < Console.doc.getLength(); i++) {
            
        }
        
        if (trace) {
            Throwable t = new Throwable();
            StackTraceElement[] elements = t.getStackTrace();
            String caller = elements[0].getClassName();
            
            s = caller + " -> " + s;
            
        }
        
        try {
            Console.doc.insertString(Console.doc.getLength(), s, style);
        } catch(Exception ex) {}
        
    }

    public static void println(String s, boolean trace) {
        println(s, trace, new Color(255, 255, 255));
    }
    
    public static void println(String s, boolean trace, Color c) {
        print(s + "\n", trace, c);
    }
}

here's the code that i'm trying to implement: https://stackoverflow.com/questions/35673302/java-typewriter-effect

when i do use the "g.drawString" method i ususally get an error saying that "g" is null which makes me think that i am missing something and that "g.drawString" would work but i'm very unsure.

i have some ideas on what i should do like maybe try to make the main string public without anything to it/making it into an array or trying to make a whole new render itself for the JTextPane to get the effect but i've had no luck so far. anyone's got any ideas if it's even possible?