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stream has already been operated upon の原因と直し方

Streamは1回しか終端操作できません。

 1  import java.util.Arrays;
 2  
 3  public class Main {
 4      public static void main(String[] args) {
 5          int[] nums = {1, 2, 3};
 6          var s = Arrays.stream(nums);
 7          nums[0] = ___;
                       ^
 8          System.out.println(s.sum());
 9      }
10  }