How to get the selected value from Jlist in Java no matter how many times the Jlist is clicked

Question

I wish to be able to make my JList respond to a click even when it is pressed more than once.Value changed is called only when another index is clicked.This is the default behaviour.However,i Want it to always tell when a click occurs.From this simple example,it is clear that the value changed will be fired only if i click it once,clicking it twice will not respond.I need this specific functionality,The main reason is legitimate but more complex to explain.

public class TestFrame extends JFrame {

    private JPanel contentPane;

    /**
     * Launch the application.
     */
    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    TestFrame frame = new TestFrame();
                    frame.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }

    /**
     * Create the frame.
     */
    public TestFrame() {
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setBounds(100, 100, 450, 300);
        contentPane = new JPanel();
        contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
        setContentPane(contentPane);
        contentPane.setLayout(new BorderLayout(0, 0));

        JList list = new JList();

        list.setModel(new AbstractListModel() {
            String[] values = new String[] {"one", "two", "three"};
            public int getSize() {
                return values.length;
            }
            public Object getElementAt(int index) {
                return values[index];
            }
        });

        list.addListSelectionListener(new ListSelectionListener() {

            @Override
            public void valueChanged(ListSelectionEvent e) {
                // TODO Auto-generated method stub

                System.out.println("selected index : "+list.getSelectedIndex());

            }


        });

        contentPane.add(list, BorderLayout.CENTER);
    }

}

Answer 1

You would need to use a MouseListener to solve this:

  list.addMouseListener(new MouseAdapter() {
     @Override
     public void mousePressed(MouseEvent e) {
        int index = list.locationToIndex(e.getPoint());
        System.out.println("MouseListener index: " + index);
     }
  });