Java StringWriter flush()用法及代碼示例

Java中的StringWriter類的flush()方法用於刷新編寫器。通過刷新寫入器，意味著清除寫入器中可能在寫入器內部或可能不在寫入器內部的任何元素。它既不接受任何參數，也不返回任何值。

用法:

public void flush()

參數：此方法不接受任何參數。

返回值：此方法不返回任何值。它隻是刷新作家。

以下示例程序旨在說明flush()方法的用法：

示例1:

// Java program to demonstrate 
// StringWriter flush() method 
  
import java.io.*; 
  
class GFG { 
    public static void main(String[] args) 
    { 
        // The string to be written in the writer 
        String str = "GeeksForGeeks"; 
  
        try { 
  
            // Create a StringWriter instance 
            StringWriter writer 
                = new StringWriter(); 
  
            // Write the above string to this writer 
            // This will put the string in the writer 
            // till it is printed on the console 
            writer.write(str); 
  
            System.out.println(writer.toString()); 
  
            // Now clear the writer 
            // using flush() method 
            writer.flush(); 
        } 
        catch (Exception e) { 
            System.out.println(e); 
        } 
    } 
}

輸出：

GeeksForGeeks

示例2:

// Java program to demonstrate 
// StringWriter flush() method 
  
import java.io.*; 
  
class GFG { 
    public static void main(String[] args) 
    { 
  
        try { 
  
            // Create a StringWriter instance 
            StringWriter writer 
                = new StringWriter(); 
  
            // Write the char to this writer 
            // This will put the char in the writer 
            // till it is printed on the console 
            writer.write(65); 
  
            System.out.println(writer.toString()); 
  
            // Now clear the writer 
            // using flush() method 
            writer.flush(); 
        } 
        catch (Exception e) { 
            System.out.println(e); 
        } 
    } 
}

輸出：

相關用法

注：本文由純淨天空篩選整理自Code_r大神的英文原創作品 StringWriter flush() 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。