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LongAdder sum() method in Java with Examples

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  • Last Updated : 28 Jan, 2019

LongAdder class in Java creates a new adder with an initial sum of zero. The Java.LongAdder.sum() is an inbuilt method in java that returns the sum.

Syntax:

public long sum()

Parameters: The function does not accepts any parameter.

Return value: The method returns the current sum.

Program below demonstrates the function:

Below programs demonstrate the above function:

Program 1:




// Java program to demonstrate
// the LongAdder.sum() 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);
  
        // sum operation on num
        num.sum();
  
        // Print after sum
        System.out.println("Returned sum value is: "
                           + num);
    }
}

Output:

Initial value is: 0
After addition of 6, value is: 6
After addition of 5, value is: 11
Returned sum value is: 11

Program 2:




// Java program to demonstrate
// the LongAdder.sum() 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);
  
        // sum operation on num
        num.sum();
  
        // Print after sum
        System.out.println("Returned sum value is: "
                           + num);
    }
}

Output:

Initial value is: 0
After addition of 10, value is: 10
After addition of 100, value is: 110
Returned sum value is: 110

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