Double-click event on JList element

I have a JList with a DefaultListModel.

How I can make an item in a JList react to double-click event?

Solution 1:

String[] items = {"A", "B", "C", "D"};
JList list = new JList(items);

list.addMouseListener(new MouseAdapter() {
    public void mouseClicked(MouseEvent evt) {
        JList list = (JList)evt.getSource();
        if (evt.getClickCount() == 2) {

            // Double-click detected
            int index = list.locationToIndex(evt.getPoint());
        } else if (evt.getClickCount() == 3) {

            // Triple-click detected
            int index = list.locationToIndex(evt.getPoint());
        }
    }
});

Solution 2:

(based on Mohamed Saligh, the accepted response)

If you are using NetBeans

Select the JList > Events window > mouseClicked

private void jListNicknamesMouseClicked(java.awt.event.MouseEvent evt) {                                            
    JList list = (JList)evt.getSource();
    if (evt.getClickCount() == 2) {
        int index = list.locationToIndex(evt.getPoint());
        System.out.println("index: "+index);
    }
}

Solution 3:

I know you have a simple solution, but you may want to check out List Action for a more general solution that will allow you to use the mouse as well as the key board. Proper GUI design should allow the use to use either approach.

The most basic example of using the ListAction would be:

String[] data = { "zero", "one", "two", "three", "four", "five" };
JList list = new JList( data );

Action displayAction = new AbstractAction()
{
    public void actionPerformed(ActionEvent e)
    {
        JList list = (JList)e.getSource();
        System.out.println(list.getSelectedValue());
    }
};

ListAction la = new ListAction(list, displayAction);