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Inbuild method to sum of an arraylist elements in java

Sum of arraylist java 8

int total = numbers.stream().mapToInt(i -> i.intValue()).sum();
		System.out.print(total);

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Inbuild method to sum of an arraylist elements in java

doubleList.stream().reduce((a,b)->a+b).get();

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Source: stackoverflow.com

Inbuild method to sum of an arraylist elements in java

//If you have a List<Integer>
int sum = list.stream().mapToInt(Integer::intValue).sum();

//If it's an int[]
int sum = IntStream.of(a).sum();

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