📜  Java中的LongAccumulator accumulator()方法及示例

📅  最后修改于: 2022-05-13 01:55:42.467000             🧑  作者: Mango

Java中的LongAccumulator accumulator()方法及示例

Java.LongAccumulator.accumulate()是Java中的一个内置方法,它使用给定的值更新特定的 LongAccumulator 对象。

句法:

public void accumulate(long x)

参数:该方法接受单个参数x ,即更新当前 LongAccumulator 对象的值。

返回值:该方法返回更新后的值。

下面的程序说明了上述方法:

程序 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);
    }
}
输出:
After update the value is: 2

方案二

// 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);
    }
}
输出:
After update the value is: 5

参考:https: Java/util/concurrent/atomic/LongAccumulator.html#accumulate-long-