public void update() {
        if (sinyalemen == 0) {
            tgl1.setText(this.showDateNow(0));
            waktu1.setText(this.showTimeNow() + " WIB");
        } else if (sinyalemen == 2) {
            tgl2.setText(this.showDateNow(0));
            waktu2.setText(this.showTimeNow() + " WIB");
        } else if (sinyalemen == 1) {
            tgl3.setText(this.showDateNow(0));
            waktu3.setText(this.showTimeNow() + " WIB");
        } else {
            tgl4.setText(this.showDateNow(0));
            waktu4.setText(this.showTimeNow() + " WIB");
        }
    }