Draw Image on Canvas.java

import javax.swing.JFrame;
import javax.swing.JPanel;
import java.awt.Canvas;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.image.BufferStrategy;
import java.awt.image.BufferedImage;
import java.io.File;
import java.util.Arrays;
import java.util.List;
import java.util.Objects;
import java.util.function.Consumer;

private static void createFrameAndDraw(Consumer<Graphics2D> g2dCallback) {
    final JFrame frame = new JFrame("Demo Paint");

    frame.setBounds(0, 0, 640, 480);
    frame.setLayout(null);
    frame.setLocationRelativeTo(null);
    frame.setResizable(false);
    frame.setVisible(true);

    // close frame handler
    final Runnable closeCallback = frame::dispose;
    frame.addWindowListener(new WindowAdapter() {
        @Override
        public void windowClosing(WindowEvent e) {
            closeCallback.run();
        }
    });

    // Panel added
    final JPanel pane = new JPanel();
    pane.setBounds(0, 0, 640, 480);
    pane.setLayout(null);
    frame.add(pane);

    // this Canvas added
    final Canvas canvas = new Canvas();
    canvas.setBounds(pane.getBounds());
    pane.add(canvas);
    //canvas.setIgnoreRepaint(true); // active painting only on canvas, does this apply to swing?
    canvas.requestFocus();  // get focus for keys

    // double buffering to avoid flickering
    canvas.createBufferStrategy(2);
    BufferStrategy bufferStrategy = canvas.getBufferStrategy();

    for (int i = 0; i < 1; ++i) {
        final Graphics2D g2d = (Graphics2D) bufferStrategy.getDrawGraphics();

        // Wipe with black color
        g2d.setColor(Color.gray);
        g2d.fillRect(0, 0, 640, 480);

        g2d.setColor(Color.blue);
        g2d.drawString("Draw Something", 10, 10);

        g2dCallback.accept(g2d);

        // finally, we've completed drawing so clear up the graphics
        // and flip the buffer over
        g2d.dispose();
        bufferStrategy.show();
    }
}