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+%0A/**%0A * @author agaust%0A * @blog bloggersmart.net - python.web.id%0A */%0Apublic class TesLampuInterface %7B%0A    public static void main(String%5B%5D args) %7B%0A        Lampu lampuKamar = new Lampu();%0A        lampuKamar.hidupkan();%0A        lampuKamar.hidupkan();%0A        lampuKamar.matikan();%0A        lampuKamar.matikan();%0A        lampuKamar.hidupkan();%0A        lampuKamar.redupkan(); //menampilkan method baru berupa redupkan()%0A        lampuKamar.redupkan();%0A    %7D%0A%7D%0A

Create TesLampuInterface.java