I am creating a simple game involving buttons to play. My code is split into two separate programs, a GraphicsMain and GraphicsPanel. In the main, I have built my Jframe and buttons. In the panel, is my graphics. My issue is trying to to get the paintComponent and graphics to work in my main program.

I tried to place the libraries and code into the first program, the main, but it didn’t work…

`//Here is my main program:
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Color;
public class GraphicsMain extends JFrame{
public static void main(String[] args){ 
    
    public void paintComponent(Graphics g){
        Graphics2D g2 = (Graphics2D) g;
    
    GraphicsMain window = new GraphicsMain();
    JPanel p = new JPanel();
    p.add(new GraphicsPanel());  //  add a class that extends JPanel
    window.setTitle("Arrays Project");
    window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    window.setContentPane(p);
    window.pack();
    window.setLocationRelativeTo(null);
    window.setVisible(true);
    //Buttons for Players to select their move:
    JButton button = new JButton("Add 1:");
    button.setBounds(29, 400, 75, 50);
    JButton button2 = new JButton("Add 2:");
    button2.setBounds(101, 400, 75, 50);
    JButton button3 = new JButton("Add 1:");
    button3.setBounds(329, 400, 75, 50);
    JButton button4 = new JButton("Add 2:");
    button4.setBounds(401, 400, 75, 50);
    window.setLayout(null);
    //Adds buttons to the frame:
    window.add(button);
    window.add(button2);
    window.add(button3);
    window.add(button4);
    //Makes the frame visible:
    window.setVisible(true);
    //Action that occurs when the players click on their buttons:
    button.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {
            g2.fillOval(20, 20, 20, 20);
        }
    });
    button2.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {
            // Display a message dialog when the button is clicked
            JOptionPane.showMessageDialog(window, "Button Clicked!");
        }
    });
    button3.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {
            // Display a message dialog when the button is clicked
            JOptionPane.showMessageDialog(window, "Button Clicked!");
        }
    });
    button4.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {
            // Display a message dialog when the button is clicked
            JOptionPane.showMessageDialog(window, "Button Clicked!");
        }
    });
    }
}
 }
 
//Here is my panel program:

import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import javax.swing.JPanel;
import java.awt.Font;
public class GraphicsPanel extends JPanel{
public GraphicsPanel(){
    setPreferredSize(new Dimension(500, 500));
}
public void paintComponent(Graphics g){
    Graphics2D g2 = (Graphics2D) g;
    //1x10 board for the game:
    int count = 0;
    int [] board = new int [10];
    for (int i = 0; i < board.length; i++) { 
        g2.drawRect(0 + count, 250, 50, 50);
        count += 50;
    }
    //Labels for each square 1-10:
    g2.setFont(new Font("TimesRoman", Font.PLAIN, 20));
    g2.drawString("1", 20,  325);
    g2.drawString("2", 70,  325);
    g2.drawString("3", 120,  325);
    g2.drawString("4", 170,  325);
    g2.drawString("5", 220,  325);
    g2.drawString("6", 270,  325);
    g2.drawString("7", 320,  325);
    g2.drawString("8", 370,  325);
    g2.drawString("9", 420,  325);
    g2.drawString("10", 465,  325);
    //Title and instructions for players:
    g2.drawString("1, 2, …, 10 Game", 175,  25);
        g2.drawString("To Play: Players alternate placing either one or two pieces", 10,  60);
    g2.drawString("on the leftmost open squares. In this game, we don’t", 30,  85);
    g2.drawString("distinguish between players’ pieces, so we’ll call", 40, 110);
    g2.drawString("them left and right. Left will go first.", 85,  135);
    g2.drawString("The first player to place the tenth piece on the board wins!", 15, 170);
    //Labels for players buttons:
    g2.drawString("Player 1", 67,  385);
    g2.drawString("Player 2", 367,  385);
    
}
 }`