Java 8 Streams Java Java API
Interface:
java.util.stream.LongStream
Method:
long sum()
Returns the sum of elements in this stream. This is a special case of a reduction
Examples
package com.logicbig.example.longstream;
import java.util.stream.LongStream;
public class SumExample {
public static void main(String... args) { long sum = LongStream.of(4, 7, 9, 11, 13, 17) .sum(); System.out.println(sum); } }
Output61
package com.logicbig.example.longstream;
import java.util.stream.LongStream;
public class SumExample2 {
public static void main(String... args) { long sum = LongStream.of(4, 7, 9, 11, 13, 17) .parallel() .sum(); System.out.println(sum); } }
Output61
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