private void jTextField1KeyReleased(java.awt.event.KeyEvent evt) {
        // TODO add your handling code here:
        now = evt.getKeyChar();
        System.out.println(evt);
        if (now == ' ' || now == '-' || Character.isDigit(now) == true) {
            if ((now == ' ') && (jTextField1.getText().length() == 1 || last == ' ' || last == '-')) {
                jTextField1.setText(jTextField1.getText().substring(0, jTextField1.getText().length()-1));
                last = jTextField1.getText().substring(jTextField1.getText().length()-1,jTextField1.getText().length()).charAt(0);
            } else if ((now == '-') && ((jTextField1.getText().length() != 1) && (last != ' '))) {
                jTextField1.setText(jTextField1.getText().substring(0, jTextField1.getText().length()-1));
                last = jTextField1.getText().substring(jTextField1.getText().length()-1,jTextField1.getText().length()).charAt(0);
            } else {
                last = now;
            }
        } else if (Character.isDefined(now) == true && now != 8 && now != 10) {
            jTextField1.setText(jTextField1.getText().substring(0, jTextField1.getText().length()-1));
                last = jTextField1.getText().substring(jTextField1.getText().length()-1,jTextField1.getText().length()).charAt(0);
        }
    }