Calculate Sum of List elements using Java Streams

package org.code2care;

import java.util.ArrayList;
import java.util.List;

public class Main {
    public static void main(String[] args) {
        List<Integer> list = new ArrayList<>();
        list.add(10);
        list.add(20);
        list.add(30);
        list.add(40);
        int sum = list.stream().reduce(0,Integer::sum);
        System.out.println("Sum="+sum);

    }
}

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