import javax.swing.JList;
public class Main {
public static void main(String[] argv) throws Exception {
String[] items = { "A", "B", "C", "D" };
JList list = new JList(items);
int itemIx = list.getFirstVisibleIndex();
if (itemIx < 0) {
// List is either not visible or there are no items
}
}
}