Tengo un JFrame. En eso tengo dos contenedores, es decir, dos JPanel. Un panel contiene una imagen. otro tiene un JButton. Luego, estos dos se agregan a JTabbedPane.

Mi problema es usar una imagen .gif, la imagen se vuelve estática como cualquier otra imagen .jpg normal. ¿Alguien puede ayudarme con algunas ideas más?

Aquí está mi código:

import java.awt.Component;
import java.awt.Dimension;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.GridBagLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.URL;
import java.net.UnknownHostException;
import javax.imageio.ImageIO;
import javax.imageio.stream.ImageInputStream;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JDesktopPane;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.UIManager.LookAndFeelInfo;

public class ICLOUD implements ActionListener {

private BufferedImage bg;
JButton b1;
private Object frame1;
JFrame frame2 = new JFrame();

  JDesktopPane desktop = new JDesktopPane();
    public ICLOUD() {
    try {
        URL url = this.getClass().getResource("anigif.gif");
        bg = ImageIO.read(url);

    } catch (IOException ex) {

    }

    JPanel tabPanel = new JPanel(new GridBagLayout()) {
        @Override
        protected void paintComponent(Graphics g) {
            super.paintComponent(g);
            g.drawImage(bg, 0, 0, getWidth(), getHeight(), this);
        }


        @Override
        public Dimension getPreferredSize() {
            return new Dimension(400, 300);
        }
    };



    JPanel buttons = new JPanel(new GridLayout(4, 1, 15, 15));
    buttons.setOpaque(false);



    ImageIcon icon5 = new ImageIcon(ICLOUD.class.getResource("hi.jpg"));

    b1=new JButton("Hello");

    buttons.add(b1);





    tabPanel.add(buttons);


    JTabbedPane tabPane = new JTabbedPane();
    tabPane.addTab(null,icon5, tabPanel);

    JFrame frame = new JFrame("I-CLOUD");
    b1.setVisible(true);
    frame.setContentPane(tabPane);
    frame.pack();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setLocationByPlatform(true);
    frame.setVisible(true);
}






public static void main(String[] args) {

    try {
        for (LookAndFeelInfo info : UIManager.getInstalledLookAndFeels()) {
            if ("Nimbus".equals(info.getName())) {
                UIManager.setLookAndFeel(info.getClassName());
                break;
            }
        }
    } catch (Exception e) {

    }
            ICLOUD r=new ICLOUD();
        }






@Override
public void actionPerformed(ActionEvent e) {
    // TODO Auto-generated method stub

}



 }