Can't understand why my DefaultListCellRenderer doesn't work

Question

Hello i know that from the subject title it seems that this is the wrong category to post but because i need to load thumbnails in list and i resize them i didn't know where to post sorry if it is the wrong plase and also sorry for my bad english.
I am making a programm that get's from the user some image paths , then makes thumbnails and then shows the thumbnails with a status and the name of the image. My list has HORIZONTAL_WRAP layout orientation and because i want to show the name the status and the thumbnail in the list i made a DefaultListCellRenderer. The problem is that when i add elements in the list it appears nothing but when i press with the mouse somewhere int the list the listImagesValueChanged is invoked and the data are passed correctly. I made an class named ImageThubInfo to save the name and the thumbnail for eatch image, also i am using a swing worker to create the thubnails and pass them along with all other information in ImageThubInfo and then store all ImageThubInfo objects to a list. When the worker thread is done it tries to add those elements to the list here is my code
import java.awt.image.BufferedImage;
import javax.swing.ImageIcon;
import javax.swing.JOptionPane;
* ImageThubInfo stores information for each image
* @author maxsap
public class ImageThubInfo  {
    public ImageThubInfo() {
    public ImageThubInfo(String status, String name, int width, int height, long size) {
        this(status, name, width, height, size, null);
    public ImageThubInfo(String status, String name, int width, int height, long size,BufferedImage thumbnail) {
        this.status = status;
        setName(name);
        this.width = width;
        this.height = height;
        this.size = size;
        this.thumbnail = thumbnail;
    public void setStatus(String status) {
        this.status = status;
    public String getStatus() {
        return status;
    public void setName(String name) {
        int indexOf = name.indexOf(".");
        this.name = name.substring(0, indexOf);
        JOptionPane.showMessageDialog(null, this.name);
    public String getName() {
        return name;
    public void setWidth(int width) {
        this.width = width;
    public int getWidth() {
        return width;
    public void setHeight(int heigth) {
        this.height = height;
    public int getHeight() {
        return height;
    public void setSize(long size) {
        this.size = size;
    public float getSize() {
        return size;
    public void setThumbnail(ImageIcon BufferedImage) {
        this.thumbnail = thumbnail;
    public BufferedImage getThumbnail() {
        return thumbnail;
    private String status;
    private String name;
    private int width;
    private int height;
    private long size;
    private BufferedImage thumbnail;
}this is my DefaultListCellRenderer class
import java.awt.Component;
import java.awt.image.BufferedImage;
import javax.swing.DefaultListCellRenderer;
import javax.swing.ImageIcon;
import javax.swing.JList;
* @author maxsap
public class ImageThubInfoRenderer extends DefaultListCellRenderer {
    public ImageThubInfoRenderer(){}
      @Override
    public Component getListCellRendererComponent(JList list,
            Object value,
            int index,
            boolean isSelected,
            boolean cellHasFocus) {
         super.getListCellRendererComponent(list,value,index,isSelected,
                                                            cellHasFocus);
        ImageThubInfo info = (ImageThubInfo) value;
        String name = info.getName();
        String state = info.getStatus();
        BufferedImage thumbnail = (BufferedImage)info.getThumbnail();
        setIcon(new ImageIcon(thumbnail));
        setText(name+" Current State: "+state);
        if (isSelected) {
            setBackground(list.getSelectionBackground());
            setForeground(list.getSelectionForeground());
        } else {
            setBackground(list.getBackground());
            setForeground(list.getForeground());
        return this;
}and this is my swing worker class
public class ThumbLoader extends SwingWorker<List<ImageThubInfo>, BufferedImage> {
      private DefaultListModel model;
      private int total;
      private File [] files;
      private List<ImageThubInfo> imageList;
      protected ThumbLoader(DefaultListModel model,File []files){
            this.model = model;
            this.files= files;
      @Override
      protected List<ImageThubInfo> doInBackground() throws Exception {
            imageList = new LinkedList<ImageThubInfo>();
             for (int i = 0; i < files.length; i++) {
                ImageIcon icon;
                icon = createImageIcon(files.toString());
if(icon != null){
ImageIcon thumbnailIcon = new ImageIcon(getScaledImage(icon.getImage(), 100, 100,files[i]));
return imageList;
protected ImageIcon createImageIcon(String path) {
if (path != null) {
return new ImageIcon(path);
} else {
System.err.println("Couldn't find file: " + path);
return null;
private Image getScaledImage(Image srcImg, int w, int h, File file){
BufferedImage resizedImg = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
Graphics2D g2 = resizedImg.createGraphics();
g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g2.drawImage(srcImg, 0, 0, w, h, null);
ImageThubInfo tubInfo = new ImageThubInfo("Waiting",file.getName(),srcImg.getHeight(null),srcImg.getHeight(null),300,resizedImg);
imageList.add(tubInfo);
JOptionPane.showMessageDialog(null, new ImageIcon(resizedImg));
g2.dispose();
return resizedImg;
}protected void done() {
setProgress(100);
try {
//JOptionPane.showMessageDialog(null, imageList.size());
List<ImageThubInfo> imageList = this.get();
for(int i=0; i< imageList.size(); i++){
JOptionPane.showMessageDialog(null, new ImageIcon(imageList.get(i).getThumbnail()));
model.addElement(imageList.get(i));
} catch (InterruptedException ex) {
Logger.getLogger(ThumbLoader.class.getName()).log(Level.SEVERE, null, ex);
} catch (ExecutionException ex) {
Logger.getLogger(ThumbLoader.class.getName()).log(Level.SEVERE, null, ex);
JOptionPane.showMessageDialog(null, "DONE");
}}can anyone tell me what i am doing wrong???? please help because i really can't understand what i am doing wrong.
thenks in advance                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           

Answer 1

Works okay now. Many changes to ThumbLoader:
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.*;
import java.util.concurrent.*;
import java.util.logging.*;
import java.util.List;
import java.util.LinkedList;
import javax.swing.DefaultListCellRenderer;
import javax.swing.*;
public class ThumbLoader extends SwingWorker<List<ImageThubInfo>, Void> {
    private DefaultListModel model;
    private int total;
    private File[] files;
    private List<ImageThubInfo> imageList;
    protected ThumbLoader(DefaultListModel model, File[] files){
        this.model = model;
        this.files = files;
    @Override
    protected List<ImageThubInfo> doInBackground() throws Exception {
        imageList = new LinkedList<ImageThubInfo>();
        for (int i = 0; i < files.length; i++) {
            BufferedImage image = null;
            try {
                image = javax.imageio.ImageIO.read(files);
} catch(IOException e) {
System.out.println("read error for " + files[i].getPath() +
": " + e.getMessage());
if(image != null){
BufferedImage scaled = getScaledImage(image, 100, 100);
ImageThubInfo tubInfo = new ImageThubInfo("Waiting",
files[i].getName(),
image.getHeight(),
image.getHeight(),
300, scaled);
imageList.add(tubInfo);
return imageList;
private BufferedImage getScaledImage(BufferedImage srcImg, int w, int h){
BufferedImage resizedImg = new BufferedImage(w, h,
BufferedImage.TYPE_INT_RGB);
Graphics2D g2 = resizedImg.createGraphics();
g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BICUBIC);
g2.drawImage(srcImg, 0, 0, w, h, null);
g2.dispose();
// JOptionPane.showMessageDialog(null, new ImageIcon(resizedImg));
return resizedImg;
protected void done() {
setProgress(100);
try {
//JOptionPane.showMessageDialog(null, imageList.size());
// List<ImageThubInfo> imageList = this.get();
imageList = get();
for(int i=0; i< imageList.size(); i++){
// JOptionPane.showMessageDialog(null, new ImageIcon(
// imageList.get(i).getThumbnail()));
model.addElement(imageList.get(i));
} catch (InterruptedException ex) {
// Logger.getLogger(ThumbLoader.class.getName()).log(Level.SEVERE,
// null, ex);
System.out.println("InterruptedException: " + ex.getMessage());
} catch (ExecutionException ex) {
// Logger.getLogger(ThumbLoader.class.getName()).log(Level.SEVERE,
// null, ex);
System.out.println("ExecutionException: " + ex.getMessage());
// JOptionPane.showMessageDialog(null, "DONE");
import java.awt.*;
import java.io.*;
import java.net.*;
import javax.swing.*;
public class Test {
    private JScrollPane getContent() {
        File[] files = getFiles();
        DefaultListModel model = new DefaultListModel();
        JList list = new JList(model);
        list.setCellRenderer(new ImageThubInfoRenderer());
        SwingWorker worker = new ThumbLoader(model, files);
        worker.execute();
        return new JScrollPane(list);
    private File[] getFiles() {
        String prefix = "images/geek/geek";
        String[] ids = { "-c---", "--g--", "---h-", "----t" };
        String ext = ".gif";
        File[] files = new File[ids.length];
        for(int i = 0; i < ids.length; i++) {
            String path = prefix + ids[i] + ext;
            URL url = getClass().getResource(path);
            try {
                files[i] = new File(url.toURI());
            } catch(URISyntaxException e) {
                System.out.println("everything is busted!");
        return files;
    public static void main(String[] args) {
        Test test = new Test();
        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.add(test.getContent());
        f.setSize(400,400);
        f.setLocation(200,200);
        f.setVisible(true);
}geek images from [Geek Images|http://java.sun.com/docs/books/tutorial/uiswing/examples/components/index.html]