Java tutorial
import java.awt.Component; import java.awt.event.InputEvent; import java.awt.event.MouseEvent; import javax.swing.JFrame; import javax.swing.JList; import javax.swing.JScrollPane; public class Main { public static void main(String[] args) { String[] items = { "Sun", "Mon", "Tues", "Wed", "Thurs", "Fri", "Sat" }; JList<String> myJList = new JList(items) { @Override protected void processMouseEvent(MouseEvent e) { int modifiers = e.getModifiers() | InputEvent.CTRL_MASK; int modifiersEx = e.getModifiersEx() | InputEvent.CTRL_MASK; MouseEvent myME = new MouseEvent((Component) e.getSource(), e.getID(), e.getWhen(), modifiers, e.getX(), e.getY(), e.getXOnScreen(), e.getYOnScreen(), e.getClickCount(), e.isPopupTrigger(), e.getButton()); super.processMouseEvent(myME); } }; JFrame f = new JFrame(); f.add(new JScrollPane(myJList)); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.pack(); f.setLocationRelativeTo(null); f.setVisible(true); } }