[자바배열합구하기] IntStream, Arrays, forEach,람다식 이용

[자바배열합구하기] IntStream, Arrays, forEach,람다식 이용

package ojc;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.List;

import java.util.stream.IntStream;

public class OjcSample {

static int sum;

public static void main(String[] args) {

int[] myArr = {1,2,3,4,5,6,7,8,9,10}; 

int sum1 = IntStream.of(myArr).sum();

System.out.println("The sum is " + sum1);

int sum2 = Arrays.stream(myArr).sum(); 

System.out.println("The sum is " + sum2);

List<Integer> list = Arrays.asList(1,2,3,4,5,6,7,8,9,10);

list.stream().forEach((i) -> {

sum += i;

});

System.out.println("The sum is " + sum);

}

}

[결과]

The sum is 55

The sum is 55

The sum is 55