I am new to java and am trying to create limitations for a textfield. I want this method to allow negative and positive doubles/integers, how can that be done? Right now it allows the sign in the middle of the text as well.

private static void Restriction(JTextField text, int x) f String ttext.getText); if Cx1) text.addKeyListener(new KeyAdapterO 0verride public void keyTyped(KeyEvent e) char c e.getKeyChar); if (!(Character. isDigit(c) II (c-KeyEvent .VK.PERIOD) ?l (c-KeyEvent .VK.MTNUS))) { e.consume(; h