Question

How to sum a range of numbers with filter and IntStream in Java

Answer 1

import java.util.*; 
import java.util.stream.IntStream; 

public class Test {  
    public static void main(String[] args) {  
        int sum = IntStream.range(3, 9) 
                           .filter(n -> n % 2 == 0) 
                           .sum(); 

        System.out.println(sum); 
    }  
}  
 
  
  
  
/*
run:
  
18
  
*/

 

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