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LongAdder doubleValue() method in Java with Examples

  • Last Updated : 28 Jan, 2019

LongAdder class in Java creates a new adder with an initial sum of zero. The Java.LongAdder.doubleValue() is an inbuilt method in java that returns the sum as a double value. When the object of the class is created its initial value is zero.

Syntax:

public double doubleValue()

Parameters: The function does not accepts any parameter.

Return value: The method returns a double value which represents the sum of this LongAdder

Below programs demonstrate the above function:

Program 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

Program 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

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