Question

这是我的代码

ArrayList<Restaurant> restaurant= new ArrayList<Restaurant>();

餐厅内部课程，

@Override
public String toString() {
    int i=1;
    return "\n"+(i++)+". "+this.restaurantName + 
           "\t\t"+this.location;
}

我要这样打印

[1.班加罗尔披萨小屋，2.多米诺骨牌德里]

代替打印

[1.班加罗尔披萨小屋，1.多米诺骨牌德里]

需要帮助的代码。

Answer 1

这里是另一种解决方案，我不确定您遇到了什么实际问题，因此请提供另一个可能的解决方案。这可能对您有用。

public class Restaurant {

    static int index = 1;
    String restaurantName;
    String location;
    int curIndex;

    Restaurant(final String restaurantName, final String location) {
        this.restaurantName = restaurantName;
        this.location = location;
        this.curIndex = index++;
    }

    public static void main(final String[] input) {
        final ArrayList<Restaurant> restaurant = new ArrayList<Restaurant>();
        restaurant.add(new Restaurant("pizzahut", "bangalore"));
        restaurant.add(new Restaurant("dominos", "delhi"));

        restaurant.forEach(r -> System.out.println(r));
    }

    public String toString() {
        return "\n" + curIndex + ". " + this.restaurantName +
                "\t\t" + this.location;
    }
}

Answer 2

ArrayList<Restaurant> restaurantList= new ArrayList<Restaurant>(); 

// your login to insert the elements in the array list 

// iterate list
int index=1;
for(Restaurant r : restaurantList){
    System.out.println(String.valueOf(index++)+": "+ r);
}

餐厅内部课程，

@Override
public String toString() {
    return this.restaurantName + "\t\t"+this.location;
}

Arraylist打印带有计数的对象

2 个答案: