当前位置: 首页>>代码示例 >>用法及示例精选 >>正文


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


Java中PrintStream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 
// PrintStream println(double) method 
  
import java.io.*; 
  
class GFG { 
    public static void main(String[] args) 
    { 
  
        try { 
  
            // Create a PrintStream instance 
            PrintStream stream 
                = new PrintStream(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 
            stream.println(4.5); 
  
            stream.flush(); 
        } 
        catch (Exception e) { 
            System.out.println(e); 
        } 
    } 
}
输出:
4.5

示例2:

// Java program to demonstrate 
// PrintStream println(double) method 
  
import java.io.*; 
  
class GFG { 
    public static void main(String[] args) 
    { 
  
        try { 
  
            // Create a PrintStream instance 
            PrintStream stream 
                = new PrintStream(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 
            stream.println(1.65); 
  
            stream.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 PrintStream 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。