Question

我有这段代码：

public class Barrier
{
    private Car myCar;
    private Sensor mySensor;
    private Card myCard;

public Barrier()
{
    myCar = new Car();
    mySensor = new Sensor();
    myCard = new Card();
}
}

和此代码

public class Card
{
    private int Card1;

public void get_no_card(int result)
{   
    Card1 = result; 
}

public void display()
{
    if (Card1 == 1)
    {
        System.out.println("Card is present");
    }
}

我想将Card类中的变量Card1调用到Barrier类中，以便屏障类可以输出Card以及卡类，我该怎么做呢？

Answer 1

我希望我能正确理解你。首先是障碍类：

public class Barrier {
     private Car myCar;
     private Sensor mySensor;
     private Card myCard;

    public Barrier() {
        myCar = new Car();
        mySensor = new Sensor();
        myCard = new Card();
    }

    public void callCard() {
        myCard.setCard1(1);
        myCard.display();   
        System.out.println("The class type of myCard is " + myCard.getClass().getName());
    }
}

卡片类：

public class Card {

    private int Card1;

    public void display() {
        if (getCard1() == 1) {
             System.out.println("Card is present");
        }
    }

    public int getCard1() {
        return Card1;
    }

    public void setCard1(int card1) {
        Card1 = card1;
    }   
}

测试一下：

class Test {

    public static void main(String[] args) {    
         Barrier b = new Barrier();
         b.callCard();
    }
}

因此，当我们调用callCard()方法时，我们首先将Card1的值设置为1，以便display()将打印文本。然后我们打印myCard的类类型的名称。

如何在bluJay中调用另一个类的变量

1 个答案: