CODEWITHSUNDEEP
javaarraylist
Sabbathlives
Sabbathlives

Reputation: 117

How to count attributes from an arrayList?

So I have an arrayList 

 Dog spot = new Dog("Spot", "Lab","Blonde", Tail.OTTER,"Yes", 50, 3);
 Dog buddy = new Dog("Buddy", "Pit Bull", "Black", Tail.DOCKED,"Yes", 60, 2);
 Dog mia = new Dog ("Mia", "Pug", "Brown", Tail.RING ,"No", 70, 4);

Now the 50,60,and 70 are the weight of the dogs. I'd like to total them up without writing out lengthy, non flexible code such like:

int totalWeight = spot.weight + buddy.weight + mia.weight;

Is there a way to do that?

Upvotes: 0

Views: 203

Answers (2)

Jeroen Vannevel
Jeroen Vannevel

Reputation: 44439

Place every object in a list

List<Dog> dogs = new ArrayList<>();
dogs.add(spot);
dogs.add(buddy);
dogs.add(mia);

int result = 0;
for(Dog dog : dogs) {
 result += dog.getWeight(); 
}

Upvotes: 2

Eric Stein
Eric Stein

Reputation: 13672

int totalWeight = 0;
for (final Dog dog : dogs) {
    totalWeight += dog.getWeight();
}

Upvotes: 3

Related Questions