Java PrintWriter println(double)用法及代碼示例

Java中的PrintWriter類的println(double)方法用於在流上打印指定的double值，然後換行。此double值用作參數。

用法:

public void println(double doubleValue)

參數：此方法接受強製參數doubleValue，該參數是要寫入流中的double值。

返回值：此方法不返回任何值。

下麵的方法說明了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); 
        } 
    } 
}

輸出：

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); 
        } 
    } 
}

輸出：

1.65

相關用法

注：本文由純淨天空篩選整理自Kirti_Mangal大神的英文原創作品 PrintWriter println(double) method in Java with Examples。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。