Java 中 long 累加器 reset()方法示例

原文:https://www . geesforgeks . org/long 累加器-reset-method-in-Java-with-examples/

java。long 累加器. reset() 是 java 中的一个内置方法，用于重置变量，同时保持对标识值的更新。

语法:

public void reset()

参数:该方法不接受任何参数。

返回值:该方法返回复位值。

下面的程序说明了上述方法:

程序 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);
    }
}

输出:

the current value is: 0

程序二 :

// 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);
    }
}

输出:

the current value is: 0

参考:https://docs . Oracle . com/javase/8/docs/API/Java/util/concurrent/atomic/long 累加器. html # reset–

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