Java PrintWriter println(double)用法及代码示例

Java中的PrintWriter类的println(double)方法用于在流上打印指定的double值，然后换行。此double值用作参数。

用法:

public void println(double doubleValue)

参数：此方法接受强制参数doubleValue，该参数是要写入流中的double值。

返回值：此方法不返回任何值。

下面的方法说明了println(double)方法的用法方式：

示例1:

// Java program to demonstrate 
// PrintWriter println(double) method 
  
import java.io.*; 
  
class GFG { 
    public static void main(String[] args) 
    { 
  
        try { 
  
            // Create a PrintWriter instance 
            PrintWriter printr 
                = new PrintWriter(System.out); 
  
            // Print the double value '4.5' 
            // to this stream using println() method 
            // This will put the doubleValue in the 
            // stream till it is printed on the console 
            printr.println(4.5); 
  
            printr.flush(); 
        } 
        catch (Exception e) { 
            System.out.println(e); 
        } 
    } 
}

输出：

4.5

示例2:

// Java program to demonstrate 
// PrintWriter println(double) method 
  
import java.io.*; 
  
class GFG { 
    public static void main(String[] args) 
    { 
  
        try { 
  
            // Create a PrintWriter instance 
            PrintWriter printr 
                = new PrintWriter(System.out); 
  
            // Print the double value '1.65' 
            // to this stream using println() method 
            // This will put the doubleValue in the 
            // stream till it is printed on the console 
            printr.println(1.65); 
  
            printr.flush(); 
        } 
        catch (Exception e) { 
            System.out.println(e); 
        } 
    } 
}

输出：

1.65

相关用法

注：本文由纯净天空筛选整理自Kirti_Mangal大神的英文原创作品 PrintWriter println(double) method in Java with Examples。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。