Java IntStream asDoubleStream()用法及代碼示例

IntStream asDoubleStream()返回包含此流元素的DoubleStream，並將其轉換為double。這是一個中間操作。在Stream實例上調用中間操作，並在完成處理後將中間實例作為輸出提供。

用法:

DoubleStream asDoubleStream()
Where, DoubleStream is a sequence of 
primitive double-valued element.
返回值:IntStream asDoubleStream() returns a
DoubleStream consisting of the elements of this stream, 
converted to double.

範例1：

// Java code for DoubleStream asDoubleStream() 
// to return a DoubleStream consisting of 
// the elements of this stream 
import java.util.*; 
import java.util.stream.IntStream; 
import java.util.stream.DoubleStream; 
  
class GFG { 
  
    // Driver code 
    public static void main(String[] args) 
    { 
        // Creating an IntStream 
        IntStream stream = IntStream.of(3, 5, 9, 12, 14); 
  
        // Using DoubleStream asDoubleStream() 
        DoubleStream stream1 = stream.asDoubleStream(); 
  
        // Displaying DoubleStream consisting of 
        // the elements of this stream 
        stream1.forEach(System.out::println); 
    } 
}

輸出：

3.0
5.0
9.0
12.0
14.0

範例2：

// Java code for DoubleStream asDoubleStream() 
// to return a DoubleStream consisting of 
// the elements of this stream 
import java.util.*; 
import java.util.stream.IntStream; 
import java.util.stream.DoubleStream; 
  
class GFG { 
  
    // Driver code 
    public static void main(String[] args) 
    { 
        // Creating an IntStream and using asDoubleStream() 
        DoubleStream stream = IntStream.range(3, 8).asDoubleStream(); 
  
        // Displaying DoubleStream consisting of 
        // the elements of this stream 
        stream.forEach(System.out::println); 
    } 
}

輸出：

3.0
4.0
5.0
6.0
7.0

範例3：

// Java code for DoubleStream asDoubleStream() 
// to return a DoubleStream consisting of 
// the elements of this stream 
import java.util.*; 
import java.util.stream.IntStream; 
import java.util.stream.DoubleStream; 
  
class GFG { 
  
    // Driver code 
    public static void main(String[] args) 
    { 
        // Creating an IntStream and using asDoubleStream() 
        // to display the elements of IntStream and 
        // DoubleStream together 
        DoubleStream stream = IntStream.range(3, 8) 
                                  .peek(System.out::println) 
                                  .asDoubleStream(); 
  
        // Displaying DoubleStream consisting of 
        // the elements of this stream 
        stream.forEach(System.out::println); 
    } 
}

輸出：

相關用法

注：本文由純淨天空篩選整理自Sahil_Bansall大神的英文原創作品 IntStream asDoubleStream() in Java。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。