LongAccumulator reset() method in Java with examples

The java.LongAccumulator.reset() is an inbuilt method in java that resets variables maintaining updates to the identity value.

Syntax:

public void reset()

Parameters: The method does not accepts any parameter.

Return Value: The method returns the reset value.

Below programs illustrate the above method:

Program 1:

// Program to demonstrate the reset() 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(2);
        num.accumulate(10);

        // resets current value
        num.reset();

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

Output:

the current value is: 0

Program 2:

// Program to demonstrate the reset() 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);

        // resets current value
        num.reset();

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

Output:

the current value is: 0

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