Java LongAdder doubleValue()用法及代碼示例

Java中的LongAdder類創建一個初始和為零的新加法器。 Java.LongAdder.doubleValue()是java中的一個內置方法，該方法將總和作為雙精度值返回。創建類的對象時，其初始值為零。

用法:

public double doubleValue()

參數：該函數不接受任何參數。

返回值：該方法返回一個double值，該值代表此LongAdder的總和

下麵的程序演示了上述函數：

示例1:

// Java program to demonstrate 
// the LongAdder.doubleValue() method 
  
import java.lang.*; 
import java.util.concurrent.atomic.LongAdder; 
  
public class GFG { 
    public static void main(String args[]) 
    { 
  
        // Initialized with 0 
        LongAdder num = new LongAdder(); 
  
        // Print the initial value 
        System.out.println("Initial value is: "
                           + num); 
  
        // Add 6 to it 
        num.add(6); 
  
        // Print the final value 
        System.out.println("After addition"
                           + " of 6, value is: "
                           + num); 
  
        // Add 5 to it 
        num.add(5); 
  
        // Print the final value 
        System.out.println("After addition"
                           + " of 5, value is: "
                           + num); 
  
        // doubleValue operation on num 
        num.doubleValue(); 
  
        // Print after value 
        System.out.println("Sum of LongAdder as double: "
                           + num); 
    } 
}

輸出：

Initial value is: 0
After addition of 6, value is: 6
After addition of 5, value is: 11
Sum of LongAdder as double: 11

示例2:

// Java program to demonstrate 
// the LongAdder.doubleValue() method 
  
import java.lang.*; 
import java.util.concurrent.atomic.LongAdder; 
  
public class GFG { 
    public static void main(String args[]) 
    { 
  
        // Initialized with 0 
        LongAdder num = new LongAdder(); 
  
        // Print the initial value 
        System.out.println("Initial value is: "
                           + num); 
  
        // Add 10 to it 
        num.add(10); 
  
        // Print the final value 
        System.out.println("After addition"
                           + " of 10, value is: "
                           + num); 
  
        // Add 100 to it 
        num.add(100); 
  
        // Print the final value 
        System.out.println("After addition"
                           + " of 100, value is: "
                           + num); 
  
        // doubleValue operation on num 
        num.doubleValue(); 
  
        // Print after value 
        System.out.println("Sum of LongAdder as double: "
                           + num); 
    } 
}

輸出：

Initial value is: 0
After addition of 10, value is: 10
After addition of 100, value is: 110
Sum of LongAdder as double: 110

相關用法

注：本文由純淨天空篩選整理自Twinkl Bajaj大神的英文原創作品 LongAdder doubleValue() method in Java with Examples。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。