Java DoubleAccumulator toString()方法及示例

Java.DoubleAccumulator.toString() 是java中的一个内置方法，用于返回当前值的字符串表示。数值被明确地转换为字符串，其中初始数据类型为双数。

语法

public String toString()

参数： 该方法不接受任何参数。

返回值： 该方法返回当前值的字符串表示。

下面的程序说明了上述方法。

程序1 :

// Java program to demonstrate
// the toString() method
  
import java.lang.*;
import java.util.concurrent.atomic.DoubleAccumulator;
  
public class GFG {
    public static void main(String args[])
    {
        DoubleAccumulator num
            = new DoubleAccumulator(
                Double::sum, 0L);
  
        // accumulate operation on num
        num.accumulate(42);
        num.accumulate(10);
  
        // before toString the value is
        System.out.println("DoubleAccumulator: "
                           + num.get());
  
        // Print String representation
        System.out.println("String representation: "
                           + num.toString());
    }
}

输出:

DoubleAccumulator: 52.0
String representation: 52.0

程序2

// Java program to demonstrate
// the toString() method
  
import java.lang.*;
import java.util.concurrent.atomic.DoubleAccumulator;
  
public class GFG {
    public static void main(String args[])
    {
        DoubleAccumulator num
            = new DoubleAccumulator(
                Double::sum, 0L);
  
        // accumulate operation on num
        num.accumulate(75);
        num.accumulate(1);
  
        // before toString the value is
        System.out.println("DoubleAccumulator: "
                           + num.get());
  
        // Print String representation
        System.out.println("String representation: "
                           + num.toString());
    }
}

输出:

DoubleAccumulator: 76.0
String representation: 76.0