创建带有背景图片的JPanel

    private Image backgroundImage = new ImageIcon(this.getClass().getResource("/images/beijingtupian.jpg")).getImage();  
    public JPanel eastScrollPanel = new JPanel(){
        private static final long serialVersionUID = 1L;    

        public void paintComponent(Graphics g) {
             g.drawImage(backgroundImage, 0, 0, this);
        }
    };