Java Basic(60)-Array Holding Many Objects

創建新class稱為AnimalList

public class AnimalList {

private Animal[] theList = new Animal[5];

private int i=0;

public void add(Animal a){

if(i<theList.length){

theList[i]=a;

System.out.println("Animal added at index "+1);

i++;

}

}

}

class apples{

public static void main(String[] args){

AnimalList ALO = new AnimalList();

Dog d = new Dog();

Fish f = new Fish();

ALO.add(d);

ALO.add(f);

}

}

這是運行時的結果:

Animal added at index 0 →這是Dog

Animal added at index 1 →這是Fish