My listener doesn't work

Question

public void mouseClicked(MouseEvent e) {

// TODO Auto-generated method stub

System.out.println("Mouse click");

JOptionPane.showMessageDialog(this,"Mouse click");

}

public void mouseEntered(MouseEvent e) {

// TODO Auto-generated method stub

System.out.println("Mouse enters");

JOptionPane.showMessageDialog(this,"Mouse enters");

}

public void mouseExited(MouseEvent e) {

// TODO Auto-generated method stub

}

public void mousePressed(MouseEvent e) {

// TODO Auto-generated method stub

}

public void mouseReleased(MouseEvent e) {

// TODO Auto-generated method stub

}

Answer 1

The code is incomplete. I can’t help you check this. You can refer to the teacher’s code