Java 中 LongAdder doubleValue()方法,带示例

原文:https://www . geesforgeks . org/long adder-double value-in-Java-method-with-examples/

Java 中的 LongAdder 类创建一个初始和为零的新加法器。爪哇。LongAdder.doubleValue() 是 java 中的一个内置方法,它以双精度值的形式返回总和。创建类的对象时,其初始值为零。

语法:

public double doubleValue()

参数:函数不接受任何参数。

返回值:该方法返回一个二进制值,代表这个长加法器的和

以下程序演示了上述功能:

程序 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);
    }
}

Output:

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

程序 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);
    }
}

Output:

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