import javax.swing.JList;
import javax.swing.JScrollPane;
public class Main {
public static void main(String[] argv) throws Exception {
String[] items = { "A", "B", "C", "D" };
JList list = new JList(items);
JScrollPane scrollingList = new JScrollPane(list);
// Change orientation to top-to-bottom, left-to-right layout
list.setLayoutOrientation(JList.VERTICAL_WRAP);
}
}