DoubleAdder longValue() method in Java with Examples

The java.DoubleAdder.longValue() is an inbuilt method in java that returns the sum() as a long after a narrowing primitive conversion. When the object of the class is created its initial value is zero.

Syntax:

public long longValue()

Parameters:Return value: This method returns the numeric value represented by this object after conversion to long data type.

Below programs illustrate the above method:

Program 1:

// Program to demonstrate the longValue() method

import java.lang.*;
import java.util.concurrent.atomic.DoubleAdder;

public class GFG {
    public static void main(String args[])
    {

        DoubleAdder num = new DoubleAdder();

        // add operation on num
        num.add(42);
        num.add(10);

        // longValue operation on variable num
        num.longValue();

        // Print after longValue operation
        System.out.println("the value after longValue() is: " + num);
    }
}

Output:

the value after longValue() is: 52.0

Program 2:

// Program to demonstrate the longValue() method

import java.lang.*;
import java.util.concurrent.atomic.DoubleAdder;

public class GFG {
    public static void main(String args[])
    {
        DoubleAdder num = new DoubleAdder();

        // add operation on num
        num.add(62);

        // longValue operation on variable num
        num.longValue();

        // Print after longValue operation
        System.out.println("the value after longValue() is: " + num);
    }
}

Output:

the value after longValue() is: 62.0

Reference: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/atomic/DoubleAdder.html#longValue–