Listening for Changes to the Selection in a JList Component
When the set of selected items is changed, either by the user or
programmatically, a list selection event is fired.
// Create a list
String[] items = {"A", "B", "C", "D"};
JList list = new JList(items);
// Register a selection listener
list.addListSelectionListener(new MyListSelectionListener());
class MyListSelectionListener implements ListSelectionListener {
// This method is called each time the user changes the set of selected items
public void valueChanged(ListSelectionEvent evt) {
// When the user release the mouse button and completes the selection,
// getValueIsAdjusting() becomes false
if (!evt.getValueIsAdjusting()) {
JList list = (JList)evt.getSource();
// Get all selected items
Object[] selected = list.getSelectedValues();
// Iterate all selected items
for (int i=0; i<selected.length; i++) {
Object sel = selected[i];
}
}
}
}
This is by far the best no nonsense example; it works without additional components or going to getComponent(), getParent() etc.