Class work #8

Box.java

public class Box {
    public void drop() {
        System.out.println("Bom");
    }
}

HeavyBox.java

public class HeavyBox extends Box {
    public void drop() {
        System.out.println("Booooooooom!!!");
    }
}

PolymorphismExample.java

public class PolymorphismExample  {
    public static void main(String[] args) {
        Box box;
        
        if(Math.random() < 0.5) {
            box = new HeavyBox();
        } else {
            box = new Box();
        }

        dropBox(box);
    }

    private static void dropBox(Box box) {
        box.drop();
    }
}