Java DoubleSummaryStatistics getSum()用法及代码示例

Java中DoubleSummaryStatistics类的getSum()方法用于获取此DoubleSummaryStatistics中的记录总数。

用法:

public double getSum()

参数：此方法不接受任何值作为参数。

返回值：此方法返回此DoubleSummaryStatistics中的记录的总和。

程序：

// 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 sum of values is "
                           + doubleSummaryStatistics 
                                 .getSum()); 
    } 
}

输出：

DoubleSummaryStatistics{count=10, sum=104682.953700, min=0.000000, average=10468.295370, max=45664.700000}
The sum of values is 104682.9537

参考： https://docs.oracle.com/javase/10/docs/api/java/util/DoubleSummaryStatistics.html#getSum()

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注：本文由纯净天空筛选整理自ShubhamMaurya3大神的英文原创作品 DoubleSummaryStatistics getSum() method in Java with Examples。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。