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


Java中PrintStream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 
// 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); 
        } 
    } 
}
輸出:
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); 
        } 
    } 
}
輸出:
1.65


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注:本文由純淨天空篩選整理自Kirti_Mangal大神的英文原創作品 PrintStream 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。