Java CharArrayWriter writeTo()用法及代碼示例

Java中CharArrayWriter類的writeTo(Writer)方法用於將CharArrayWriter的內容寫入另一個字符流。

public void writeTo(Writer out)
             throws IOException

參數：此方法接受一個代表輸出流的參數，該輸出流是目標流。返回值：此方法不返回任何值。異常：如果發生I /O錯誤，此方法將引發IOException。下麵的程序演示了writeTo(Writer)方法在IO包的CharArrayWriter類中：程序1：

Java

// Java program to illustrate 
// CharArrayWriter writeTo(Writer) method 
  
import java.io.*; 
  
public class GFG { 
    public static void main(String[] args) 
        throws IOException 
    { 
  
        // Create charArrayWriter 
        CharArrayWriter charArrayWriter 
            = new CharArrayWriter(); 
  
        String str = "GEEKS"; 
  
        charArrayWriter.write(str); 
  
        // Create outputStream 
        CharArrayWriter out 
            = new CharArrayWriter(); 
  
        charArrayWriter.writeTo(out); 
  
        // print the outputStream 
        System.out.println( 
            out.toString()); 
    } 
}

輸出：

GEEKS

程序2:

Java

// Java program to illustrate 
// CharArrayWriter writeTo(Writer) method 
  
import java.io.*; 
  
public class GFG { 
    public static void main(String[] args) 
        throws IOException 
    { 
  
        // Create charArrayWriter 
        CharArrayWriter charArrayWriter 
            = new CharArrayWriter(); 
  
        charArrayWriter.write("GEEKSFORGEEKS"); 
  
        // Create outputStream 
        CharArrayWriter out 
            = new CharArrayWriter(); 
  
        charArrayWriter.writeTo(out); 
  
        // print the outputStream 
        System.out.println( 
            out.toString()); 
    } 
}

輸出：

GEEKSFORGEEKS

參考文獻：
https://docs.oracle.com/javase/10/docs/api/java/io/CharArrayWriter.html#writeTo(java.io.Writer)

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