Java StringWriter write(String, int, int)用法及代碼示例

Java中的StringWriter類的write(String，int，int)方法用於在流上寫入指定String的指定部分。該字符串作為參數。要寫入的字符串的起始索引和長度也作為參數。

用法:

public void write(String string, int startingIndex, int lengthOfstring)

參數：此方法接受三個強製參數：

string這是要寫入流中的字符串。
startingIndex這是獲取字符部分的起始索引。
lengthOfstring這是要在流上寫入的String的長度。

返回值：此方法不返回任何值。

以下示例程序旨在說明write(String，int，int)方法的用法：

程序1:

// Java program to demonstrate 
// StringWriter write(String, int, int) method 
  
import java.io.*; 
  
class GFG { 
    public static void main(String[] args) 
    { 
  
        try { 
  
            // Create a StringWriter instance 
            StringWriter writer 
                = new StringWriter(); 
  
            // Get the String 
            // to be written in the stream 
            String string = "GeeksForGeeks"; 
  
            // Get the starting index 
            int startingIndex = 0; 
  
            // Get the length of char 
            int lengthOfstring = 5; 
  
            // Write the portion of the string 
            // to this writer using write() method 
            // This will put the string in the stream 
            // till it is printed on the console 
            writer.write(string, 
                         startingIndex, 
                         lengthOfstring); 
  
            writer.flush(); 
        } 
        catch (Exception e) { 
            System.out.println(e); 
        } 
    } 
}

輸出：

程序2:

// Java program to demonstrate 
// StringWriter write(String, int, int) method 
  
import java.io.*; 
  
class GFG { 
    public static void main(String[] args) 
    { 
  
        try { 
  
            // Create a StringWriter instance 
            StringWriter writer 
                = new StringWriter(); 
  
            // Get the String 
            // to be written in the stream 
            String string = "GFG"; 
  
            // Get the starting index 
            int startingIndex = 2; 
  
            // Get the length of char 
            int lengthOfstring = 1; 
  
            // Write the portion of the string 
            // to this writer using write() method 
            // This will put the string in the stream 
            // till it is printed on the console 
            writer.write(string, 
                         startingIndex, 
                         lengthOfstring); 
  
            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 write(String, int, int) 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。