CharArrayWriter writeTo() method in Java with Examples

The writeTo(Writer) method of CharArrayWriter class in Java is used to write the contents of the CharArrayWriter to another character stream.
Syntax:

public void writeTo(Writer out)
             throws IOException

Parameters: This method accepts one parameter out that represents the output stream that is the destination stream.
Return value: This method does not return any value.
Exceptions: This method throws IOException if an I/O error occurs.
Below programs illustrate writeTo(Writer) method in CharArrayWriter class in IO package:
Program 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());
    }
}

Output:

GEEKS

Program 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());
    }
}

Output:

GEEKSFORGEEKS

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