Box.java

class AppleBox {
    
    Apple item;
    
    public void store(Apple item) {
        this.item = item;
    }
    
    public Apple getItem() {
        return item;
    }
}

class MelonBox {
    
    Melon item;
    
    public void store(Melon item) {
        this.item = item;
    }
    
    public Melon getItem() {
        return item;
    }
}