I created a Java program to open a window and do double buffering:

import java.awt.*;
import java.awt.image.BufferedImage;

public class DoubleBufferingExample extends Frame {
    private BufferedImage buffer;
    private Graphics bufferGraphics;

    public DoubleBufferingExample() {
        super("Double Buffering Example");
        setSize(300, 300);
        setVisible(true);
        buffer = new BufferedImage(getWidth(), getHeight(), BufferedImage.TYPE_INT_ARGB);
        bufferGraphics = buffer.getGraphics();
    }

    public void update(Graphics g) {
        paint(bufferGraphics);
        g.drawImage(buffer, 0, 0, null);
    }

    public void paint(Graphics g) {
        // draw your image or animation here
        // using bufferGraphics instead of g
    }

    public static void main(String[] args) {
        new DoubleBufferingExample();
    }
}

However, when I try to close the window, it doesn't close. Anyone know how to fix this?

Google not working for you ?

Close frame.

@Maggistrator Okay. I decided to write an example using Swing:

import java.awt.*;
import java.awt.image.BufferedImage;
import javax.swing.*;

public class DoubleBufferingExample extends JPanel {
    private BufferedImage buffer;
    private Graphics2D bufferGraphics;
    
    public DoubleBufferingExample() {
        // Set up the JPanel
        setPreferredSize(new Dimension(400, 400));
        
        // Set up the double buffer
        buffer = new BufferedImage(400, 400, BufferedImage.TYPE_INT_RGB);
        bufferGraphics = buffer.createGraphics();
        
        // Draw something to the buffer
        bufferGraphics.setColor(Color.WHITE);
        bufferGraphics.fillRect(0, 0, 400, 400);
        bufferGraphics.setColor(Color.RED);
        bufferGraphics.fillOval(50, 50, 300, 300);
    }
    
    @Override
    protected void paintComponent(Graphics g) {
        // Copy the buffer to the screen
        g.drawImage(buffer, 0, 0, null);
    }
    
    public static void main(String[] args) {
        SwingUtilities.invokeLater(() -> {
            JFrame frame = new JFrame("Double Buffering Example");
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            frame.add(new DoubleBufferingExample());
            frame.pack();
            frame.setVisible(true);
        });
    }
}

Thanks for the tip.