How to count attributes from an arrayList?

Question

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?

Eric Stein · Accepted Answer · 2013-09-21 23:24:07Z

3

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

answered Sep 21, 2013 at 23:24

Eric Stein

13.8k3 gold badges39 silver badges51 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Sabbathlives Over a year ago

If you wouldn't mind helping a little more how would I make it so it would only add together the dogs over 55 pounds?

Sabbathlives Over a year ago

Nevermind, figured it out on my own. Thank you, for the fast help!

Jeroen Vannevel · Accepted Answer · 2013-09-21 23:24:35Z

2

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(); 
}

answered Sep 21, 2013 at 23:24

Jeroen Vannevel

44.6k25 gold badges114 silver badges174 bronze badges

Collectives™ on Stack Overflow

How to count attributes from an arrayList?

2 Answers 2

2 Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

2 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related