Java tutorial
import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import javax.swing.JLabel; import javax.swing.JOptionPane; public class Main { public static void main(String[] args) { MyLabel label = new MyLabel("java2s.com"); label.addActionListener(e -> { System.out.println("hi"); }); JOptionPane.showMessageDialog(null, label); } } class MyLabel extends JLabel { public MyLabel(String msg) { super(msg); addMouseListener(new MouseAdapter() { public void mouseClicked(MouseEvent me) { fireActionPerformed(new ActionEvent(MyLabel.this, ActionEvent.ACTION_PERFORMED, "SecretMessage")); } }); } public void addActionListener(ActionListener l) { listenerList.add(ActionListener.class, l); } public void removeActionListener(ActionListener l) { listenerList.remove(ActionListener.class, l); } protected void fireActionPerformed(ActionEvent ae) { Object[] listeners = listenerList.getListeners(ActionListener.class); for (int i = 0; i < listeners.length; i++) { ((ActionListener) listeners[i]).actionPerformed(ae); } } }