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CharArrayWriter reset() method in Java with examples
  • Last Updated : 28 May, 2019
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The reset() method of the CharArrayWriter class in Java is used to reset the buffer so that it can be used again without throwing away the already allocated buffer.

Syntax:

public void reset()

Parameters: This method does not accept any parameter.

Return Value: This method does not returns anything.

Below program illustrate the above method:



Program 1:




// Java program to illustrate
// the reset() method
  
import java.io.*;
  
public class GFG {
    public static void main(String[] args)
        throws IOException
    {
  
        // Initailizing the character array
        char[] geek = { 'G', 'E', 'E', 'K', 'S' };
  
        // Initailizing the CharArrayWriter
        CharArrayWriter char_array1
            = new CharArrayWriter();
  
        for (int c = 72; c < 77; c++) {
            // Use of write(int char)
            // Writer int value to the Writer
            char_array1.write(c);
        }
  
        // Use of size() method
        System.out.println("\nSize of char_array1 : "
                           + char_array1.size());
  
        // Resets the current stream
        char_array1.reset();
  
        // Use of size() method
        System.out.println("Size of char_array1 : "
                           + char_array1.size());
    }
}
Output:
Size of char_array1 : 5
Size of char_array1 : 0

Program 2:




// Java program to illustrate
// the reset() method
  
import java.io.*;
  
public class GFG {
    public static void main(String[] args)
        throws IOException
    {
  
        // Initailizing the character array
        char[] geek
            = { 'G', 'O', 'P', 'A', 'L', 'L' };
  
        // Initailizing the CharArrayWriter
        CharArrayWriter char_array1
            = new CharArrayWriter();
  
        for (int c = 72; c < 78; c++) {
            // Use of write(int char)
            // Writer int value to the Writer
            char_array1.write(c);
        }
  
        // Use of size() method
        System.out.println("\nSize of char_array1 : "
                           + char_array1.size());
  
        // Resets the current stream
        char_array1.reset();
  
        // Use of size() method
        System.out.println("Size of char_array1 : "
                           + char_array1.size());
    }
}
Output:
Size of char_array1 : 6
Size of char_array1 : 0

Reference: https://docs.oracle.com/javase/10/docs/api/java/io/CharArrayWriter.html#reset()

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