private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) { insert.dispatchEvent(new WindowEvent( insert, WindowEvent.WINDOW_CLOSING)); } public static void main(String args[]) { java.awt.EventQueue.invokeLater(new Runnable() { @Override public void run() { insert = new Insert(); insert.setVisible(true); } }); } private static Insert insert; ...