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LongAccumulator doubleValue() method in Java with Examples

Last Updated : 28 Jan, 2019
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The java.LongAccumulator.doubleValue() is an inbuilt method in java that returns the current value as a double after a widening primitive conversion. Syntax:
public double doubleValue()
Parameters: This method does not accepts any parameter. Return Value: This method returns the current value as a double after a widening primitive conversion. Below programs illustrate the above method: Program 1: Java
// Program to demonstrate the doubleValue() method

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

public class GFG {
    public static void main(String args[])
    {
        LongAccumulator num = new LongAccumulator(Long::sum, 0L);

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

        // Print before doubleValue operation
        System.out.println(" the old value is: " + num);

        // doubleValues current value
        num.doubleValue();

        // Print after doubleValue operation
        System.out.println("the current value is: " + num);
    }
}
Output:
the old value is: 52
the current value is: 52
Program 2: Java
// Program to demonstrate the doubleValue() method

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

public class GFG {
    public static void main(String args[])
    {
        LongAccumulator num = new LongAccumulator(Long::sum, 0L);

        // accumulate operation on num
        num.accumulate(4);
        num.accumulate(10);

        // Print before doubleValue operation
        System.out.println(" the old value is: " + num);

        // doubleValues current value
        num.doubleValue();

        // Print after doubleValue operation
        System.out.println("the current value is: " + num);
    }
}
Output:
the old value is: 14
the current value is: 14
Reference: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/atomic/LongAccumulator.html#doubleValue--

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