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LongAccumulator accumulate() method in Java with examples

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The java.LongAccumulator.accumulate() is an inbuilt method in java that updates a particular LongAccumulator object with the given value. Syntax:
public void accumulate(long x)
Parameters: The method accepts a single parameter x that is the value by which the current LongAccumulator object is to be update. Return Value: The method returns the updated value. Below programs illustrate the above method: Program 1:
// Program to demonstrate the accumulate() 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);
  
        // Print after accumulate
        System.out.println("After update the value is: " + num);
    }
}

                    
Output:
After update the value is: 2
Program 2:
// Program to demonstrate the accumulate() 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(5);
  
        // Print after accumulate
        System.out.println("After update the value is: " + num);
    }
}

                    
Output:
After update the value is: 5
Reference: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/atomic/LongAccumulator.html#accumulate-long-

Last Updated : 28 Jan, 2019
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