JList Selected Value

Question

Hey all,
I have been trying to write a Listener for a JList. I simply need to get the selected value and make it display on a JLabel.
My problem is that I cannot seem to find what I need.
How do I use the command "getSelectedIndex" when the item is clicked in a JList? I made a listener that outputs to the terminal when its clicked, it appears to be working.
Here is the code:
   class SharedListSelectionHandler implements ListSelectionListener {
        public void valueChanged(ListSelectionEvent e) {
           System.out.println("Hello World");
    }

Answer 1

Hey,
Try this,
   class SharedListSelectionHandler implements ListSelectionListener {
     public void valueChanged(ListSelectionEvent e) {
          JList list = (JList) e.getSource();
          if (e.getValueIsAdjusting() == false) {
               if (list.getSelectedIndex() == -1) {
                    System.out.println("Nothing selected.");
               } else {
                    // THIS WAY/////////
                    String text = (String) list.getSelectedValue();
                    // OR THIS WAY/////
                    ListModel model = list.getModel();
                    text = (String) model.getElementAt(e.getFirstIndex());                    
                    System.out.println(text);
    } You need to look at the ListModel really to get a better understanding of the MVC approach. Also - If you haven't used String objects you will get a ClassCastException. I'm just assuming you have.