Java 中 long 累加器 intValue()方法,带示例

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

java。long 累加器. intValue() 是 java 中的一个内置方法,它在缩小基元转换后将当前值作为 int 返回。

语法:

public int intValue()

参数:该方法不接受任何参数。

返回值:该方法在收缩基元转换后将当前值作为 int 返回。

下面的程序说明了上述方法:

程序 1 :

// Program to demonstrate the intValue() 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);

        // Print before intValue operation
        System.out.println(" the old value is: " + num);

        // intValues current value
        num.intValue();

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

输出:

the old value is: 52
the current value is: 52

程序二 :

// Program to demonstrate the intValue() 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(4);
        num.accumulate(4);

        // Print before intValue operation
        System.out.println(" the old value is: " + num);

        // intValues current value
        num.intValue();

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

输出:

the old value is: 8
the current value is: 8

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