Source Code:
abstract class Animal {
abstract void sound();
}
class Lion extends Animal {
void sound() {
System.out.println(“Roar”);
}
}
class Tiger extends Animal {
void sound() {
System.out.println(“Growl”);
}
}
public class TestAbstractAnimal {
public static void main(String[] args) {
Animal l = new Lion();
Animal t = new Tiger();
l.sound();
t.sound();
}
}
Output:
