Java中的 LongAccumulator floatValue() 方法及示例

Java.LongAccumulator.floatValue()是Java中的一个内置方法，它在扩展原始转换后将当前值作为浮点数返回。

句法：

public float floatValue()

参数：此方法不接受任何参数。

返回值：该方法在扩大基元转换后将当前值作为浮点数返回。

下面的程序说明了上述方法：

程序 1 ：

// Program to demonstrate the floatValue() 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 floatValue operation
        System.out.println(" the old value is: " + num);
  
        // floatValues current value
        num.floatValue();
  
        // Print after floatValue operation
        System.out.println(" the current value is: " + num);
    }
}

输出：

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

方案二：

// Program to demonstrate the floatValue() 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(15);
  
        // Print before floatValue operation
        System.out.println(" the old value is: " + num);
  
        // floatValues current value
        num.floatValue();
  
        // Print after floatValue operation
        System.out.println(" the current value is: " + num);
    }
}

输出：

the old value is: 19
 the current value is: 19

参考：https: Java/util/concurrent/atomic/LongAccumulator.html#floatValue–