java - 如何在 for 循环中接收对象的数据

Question

我正在尝试编写一个代码，其中一个类有两个对象。我想使用相同的 for 循环来为每个对象生成循环之和。我该怎么做呢？另外，我只有为 c1 创建的代码，有没有办法也可以为 c2 编写它，而不需要代码冗余？

我只提供了我遇到问题的文件中的一些代码。

卡路里.java

public void setCalorieSum(int calorieSum) {
    this.calorieSum = calorieSum;
}

public void setMealsAte(int mealsAte) {
    this.mealsAte = mealsAte;
}

CalorieTester.java

Calorie c1 = new Calorie();
Calorie c2 = new Calorie();
int num = 1;

System.out.println("Information for Day #" + num +": ");
c1.setMealsAte(number(console, "\t how many meals did you eat? "));

        for(int j = 1; j < c1.getMealsAte() + 1; j++) {
            c1.setCalorieSum(number(console, "\t how many calories were consumed in meal " + j + "? "));
            int calorieSum += d1.setCalorieSum();
        }

System.out.println("-- Total caloric intake = \n"/* + c1.getCalorieSum + " --"*/);
num++;

Answer 1

你的想法看起来是正确的。但是，您需要在 for 循环之前 intilize 并删除 int calorieSum，例如:

int calorieSum=0
for(int j = 1; j < c1.getMealsAte() + 1; j++) {
            c1.setCalorieSum(number(console, "\t how many calories were consumed in meal " + j + "? "));
            calorieSum += d1.setCalorieSum();
        }

此外，如果我理解您代码的用途，其中 c1 和 c2 是需要由用户填写的不同实体，您可以将您创建的 for 循环设置为:

int calorieSum1=0;
int calorieSum2=0;

for(int j = 1; j < c1.getMealsAte()+c2.getMealsAte() + 1; j++) {
            if (j<c1.getMealsAte()){
                  c1.setCalorieSum(number(console, "\t how many calories were consumed in meal " + j + "? "));
                  calorieSum1 += d1.getCalorieSum();
             }
           else {
                 c2.setCalorieSum(number(console, "\t how many calories were consumed in meal " + j + "? "));
                 calorieSum2 += d2.getCalorieSum();
                }
        }

}
d1.setCalorieSum(calorieSum1);
d2.setCalorieSum(calorieSum2);

然后创建1个getter方法

public void getCaloriesSum(){
       return this.calorieSum;
}