我的问题是找出从主类调用weight()方法的次数。我应该用totalWeightsMeasured()方法来计算它。
代码的输出应为0、2、6。 (编辑//我之前在这里有0,2,4，但输出实际上应该是0,2,6)
但是我只是不知道如何计算，我已经尝试使用Google和其他工具，但我只是不知道该怎么做。 (和，您不应再添加任何实例变量)
类(class):
public class Reformatory
{
private int weight;
public int weight(Person person)
{
int weight = person.getWeight();
// return the weight of the person
return weight;
}
public void feed(Person person)
{
//that increases the weight of its parameter by one.
person.setWeight(person.getWeight() + 1);
}
public int totalWeightsMeasured()
{
return 0;
}
}
主要的:
public class Main
{
public static void main(String[] args)
{
Reformatory eastHelsinkiReformatory = new Reformatory();
Person brian = new Person("Brian", 1, 110, 7);
Person pekka = new Person("Pekka", 33, 176, 85);
System.out.println("total weights measured "+eastHelsinkiReformatory.totalWeightsMeasured());
eastHelsinkiReformatory.weight(brian);
eastHelsinkiReformatory.weight(pekka);
System.out.println("total weights measured "+eastHelsinkiReformatory.totalWeightsMeasured());
eastHelsinkiReformatory.weight(brian);
eastHelsinkiReformatory.weight(brian);
eastHelsinkiReformatory.weight(brian);
eastHelsinkiReformatory.weight(brian);
System.out.println("total weights measured "+eastHelsinkiReformatory.totalWeightsMeasured());
}
}
最佳答案
诀窍是使用尚未使用的现有实例变量权重作为计数器。
public class Reformatory
{
private int weight;
public int weight(Person person)
{
int weight = person.getWeight();
this.weight++;
// return the weight of the person
return weight;
}
public void feed(Person person)
{
//that increases the weight of its parameter by one.
person.setWeight(person.getWeight() + 1);
}
public int totalWeightsMeasured()
{
return weight;
}
}
关于java - 如何知道从主类调用过多少次方法？，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/34039473/