EN
Java - sum all ArrayList elements
3
points
In this article, we would like to show you how to sum all the elements from ArrayList in Java.
Quick solution:
List<Integer> numbers = new ArrayList<>();
int sum = 0;
for (int number : numbers){
sum += number;
}
Practical example
In this example, we add the value of each number
from numbers
ArrayList to the sum
variable.
import java.util.*;
public class Example {
public static void main(String[] args) {
List<Integer> numbers = new ArrayList<>();
numbers.add(1);
numbers.add(2);
numbers.add(3);
int sum = 0;
for (int number : numbers){
sum += number;
}
System.out.println(sum);
}
}
Output:
6