How to add scrollbar to jpanel

Question

i created a jpanel with images & related text to images, which repaints dynamically according to width,now i wann to add a vertical scrollbar to it.
plz..help me

Answer 1

iam getting scrollbar but iam unable to get scrolling when i change the size
my code like this....
//here iam using jpanel to get images and text
public class ImgNtext extends JPanel {
   public ImgNtext(){
       //to intialize values
       init_values();
  public void init_values{
   //In these init_values iam decalaring imageFile name & text using hashtable
   public void paintComponent(Graphics g) {
         super.paintComponent(g);
         //getting width of screen
         int gw = getWidth();
         //then iam retriving all the values using while loop
         while(i.hasMoreElements())
                    //accroding to width iam painting the components
                      if(gw<100){
                           g.drawImage(image,x,y,null);
                           g.drawString(string,x,y+80);
                           gw -=100;
                           x += 100;
                     else{
                           y += 100;
                           gw = getWidth();
public class ImagePanel
       ImgNtext it = new ImgNtext();
       JScrollPane sp;
       public ImagePanel() {
                 JFrame jf = new JFrame();
                 jf.setSize(1000,1000);
                 scp = new                JScrollPane(it,JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
                 jf.getContentPane().add(scp);
                 jf.setVisible(true);
          public static void main(String s[]){
               ImagePanel img = new ImagePanel();
}