Java DoubleSummaryStatistics getAverage()用法及代碼示例

// Java program to demonstrate 
// the above method 
  
import java.util.*; 
  
public class DoubleSummaryStatisticsDemo { 
    public static void main(String[] args) 
    { 
  
        DoubleSummaryStatistics doubleSummaryStatistics 
            = new DoubleSummaryStatistics(); 
  
        List<Double> list = new LinkedList<>(); 
        list.add(95.7); 
        list.add(234.6767); 
        list.add(243.5); 
        list.add(50.0); 
        list.add(45.6); 
        list.add(45664.0); 
        list.add(7007.777); 
        list.add(5677.0); 
        list.add(0.0); 
        list.add(45664.7); 
  
        Iterator<Double> iterator = list.listIterator(); 
        while (iterator.hasNext()) { 
  
            // Add the doubles to the 
            // DoubleSummaryStatistics object 
            doubleSummaryStatistics 
                .accept(iterator.next()); 
        } 
  
        System.out.println(doubleSummaryStatistics 
                               .toString()); 
  
        System.out.println("The average of values is "
                           + doubleSummaryStatistics 
                                 .getAverage()); 
    } 
}