abstraction

abstract class hewan{
    abstract void makan();
}

class kucing extends hewan{
    void makan() {
        System.out.println("Kucing makan ikan");
    }
}

class tikus extends hewan{
    void makan() {
        System.out.println("Tikus makan kue");
    }
}

class abstraction{
    public static void main(String args[]) {
        hewan h;
        h = new kucing();
        h.makan();
        h = new tikus();
        h.makan();

    }
}