JLabel DnD

Question

I found a tutorial on how to get a JLabel to work with drag and drop. I modified the code given to use a JList and a JLabel. I got the JList to be able to drag a list element onto the JLabel and the label display the text. However, if you drag one element, and then drag another element, the first element is replaced.
I want to be able to drag multiple elements onto the JLabel from the JList. Here is my code, can anyone give me a hand?
package components;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
public class LabelDnD extends JPanel {
     JList list;
    JLabel label;
    String[] data = new String[] {"Red", "Green", "Blue"};
    public LabelDnD() {
        super(new GridLayout(2, 1));
        list = new JList(data);
        list.setDragEnabled(true);
        JPanel tfpanel = new JPanel(new GridLayout(1,1));
        TitledBorder t1 = BorderFactory.createTitledBorder("JList");
        tfpanel.add(list);
        tfpanel.setBorder(t1);
        label = new JLabel("I'm a Label!", SwingConstants.LEADING);
        label.setTransferHandler(new TransferHandler("text"));
        MouseListener listener = new DragMouseAdapter();
        label.addMouseListener(listener);
        JPanel lpanel = new JPanel(new GridLayout(1,1));
        TitledBorder t2 = BorderFactory.createTitledBorder("JLabel");
        lpanel.add(label);
        lpanel.setBorder(t2);
        add(tfpanel);
        add(lpanel);
        setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
    private class DragMouseAdapter extends MouseAdapter {
        public void mousePressed(MouseEvent e) {
            JComponent c = (JComponent)e.getSource();
            TransferHandler handler = c.getTransferHandler();
            handler.exportAsDrag(c, e, TransferHandler.COPY);
    private static void createAndShowGUI() {
        //Create and set up the window.
        JFrame frame = new JFrame("LabelDnD");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JComponent newContentPane = new LabelDnD();
        newContentPane.setOpaque(true);
        frame.setContentPane(newContentPane);
        frame.pack();
        frame.setVisible(true);
    public static void main(String[] args) {
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
}

Answer 1

Some of you need to learn some netiquette.The proper netiquette is to do some work yourself
before posting. This includes reading the API and
tutorials (which you appear to have done), but it
also involved searching the forum to see if you
question has been asked and answered previously.
Since the vast majority of people who have Swing
related questions post in the Swing forum, then you
have the best chance to find the answer there.
If you don't find an answer then you post a question
and we attempt to answer it.
Now the next person who searches the forum has a
better chance of finding the answer on a related
question.
If all the information is in one place then we don't
have to keep repeating ourselves in multiple forums
all the time.
Try answering a few questions before you become a
netiquette expert.First I would like to apologize for my comment earlier, it was a little rude. However, as an Administrator of a small programming forum, I'm used to giving detailed answers to posts, even if a similar question was previously asked. To be honest, every question I have answered in my forum could have been found if the user did a minute of searching, but sometimes its the one on one help, and question specific response, that allows the user to actually understand what they are doing. Perhaps I have spoiled myself.
I can understand in a forum as large as this, your probably tired of answering the same questions over and over again. And its your right to answer them or not. I did do a quick search on google and the only thing I was able to find was as the code above that got me this far. I figured if there were any queries relevant to my question posted in this forum, google would have found them.
Anyway, this topic can be locked / deleted as I have used a different solution.
Thanks anyway, maybe next time I'll remember the correct forum to post in. :|