private void init_long_press() { tbl_cust.addMouseListener( new MouseAdapter() { Date pressedtime; long timeClicked; @Override public void mousePressed(MouseEvent e) { pressedtime = new Date(); } @Override public void mouseReleased(MouseEvent e) { timeClicked = (new Date()).getTime() - pressedtime.getTime(); // JOptionPane.showMessageDialog(null, timeClicked); if (timeClicked >= 500) { // JOptionPane.showMessageDialog(null, timeClicked); ok1(); } } }); }