Panel2.java

import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import javax.swing.ImageIcon;
import javax.swing.JPanel;
/**
 *
 * @author FRANCISCO MINAJAS
 */
public class Panel extends JPanel
{
    BufferedImage _image;
    public Panel(){}

    public Panel(BufferedImage imagen, Dimension d)
    {
        this._image=imagen;
        this.setSize(d);
    }
    public void paint(Graphics g)
    {
        ImageIcon imagenFondo=new ImageIcon(_image);
        g.drawImage(imagenFondo.getImage(),0,0,getWidth(),getHeight(), null);
        setOpaque(false);
        super.paintComponent(g);
    }
}