Implementing moving object on a dynamic background, Swing (Pacman game)

Question

I am coding a Pacman game and I ran into few problems while trying to implement it.

I have a main JFrame which holds the background, and the points on it, the points are added in the paint() method.

I added to the frame a JPanel that makes the board which Pacman is on, Pacman is being painted by paintComponent(). Pacman movement is decided by a `KeyListener which is on the frame.

The problems I'm running into:

1. If upon pressing a key I call the paint function of the frame, which later calls the paintComponent method of the panel, my screen is blinking because each time it repaints all of the points.

2. If upon pressing a key I call directly to the panel paintComponent() method and paint the Pacman, it stays on the board like in gif number 2.

1:

2:

This is the paint method of the frame:

public void paint(Graphics g) {
    super.paint(g);
        for (int i = 0; i < 800; i++)
            for (int j = 0; j < 800; j++)
                if (boardPanel.getBoard().getTileXY(i, j).getPill() != null) 
                   g.drawImage(yellowPil, i, j, null);
    boardPanel.paintComponent(g);
}

And this is the paintComponent:

protected void paintComponent(Graphics g) {
  super.paintComponent(g);
  g.drawImage(pacmanImage,pacman.getX(),pacman.getY(),null);
}

this is how i call each of this methods (its in the jframe class) :

    public void keyPressed(KeyEvent e) {
    int keyCode = e.getKeyCode();
    switch (keyCode) {
        case KeyEvent.VK_RIGHT:
            boardPanel.movePacman(Direction.RIGHT);
            boardPanel.paintComponent(getGraphics()); // this will casue ` 
                                                         problem 2`
            break;
        case KeyEvent.VK_LEFT:
            boardPanel.movePacman(Direction.LEFT);
            repaint(); // this will cause problem 1
            break;
        case KeyEvent.VK_DOWN:
            boardPanel.movePacman(Direction.DOWN);
            repaint();
            break;
        case KeyEvent.VK_UP:
            boardPanel.movePacman(Direction.UP);
            repaint();
            break;
    }
}