In your Java code, you have the following code segment: public class BigOne { public static int i = 0;     JButton onebutton;     JLabel label;     JFrame frame;    public static void main(String[] args) {       BigOne gui = new BigOne();       gui.go();     } public void go() {     frame = new JFrame(); … Continue reading Error Exception in thread “AWT-EventQueue-0” java.lang.NullPointerException in Java program →