Home » Java programming language

Java BufferedWriter close() Method with Example

BufferedWriter Class close() method: Here, we are going to learn about the close() method of BufferedWriter Class with its syntax and example.
Submitted by Preeti Jain, on March 01, 2020

BufferedWriter Class close() method

• close() method is available in java.io package.
• close() method is used to flushes the characters from the stream and later will close it by using close() method.
• close() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
• close() method may throw an exception at the time of the closing stream.
  IOException: This exception may throw an exception while performing input/output operation.

Syntax:

    public void close();

Parameter(s):

• It does not accept any parameter.

Return value:

The return type of the method is void, it returns nothing.

Example:

// Java program to demonstrate the example 
// of void close() method of
// BufferedWriter

import java.io.*;

public class CloseBR {
    public static void main(String[] args) {
        try {
            // Instantiates StringWriter
            StringWriter str_w = new StringWriter();

            // Instantiates BufferedWriter
            BufferedWriter buff_w = new BufferedWriter(str_w);

            // Append "Hello" in buff_with the
            // help of append()
            buff_w.append("Hello...");

            // Close the stream and free
            // system resources linked with 
            // this stream buff_w
            buff_w.close();

            // we can't perform append() on
            // buff_w because this stream is 
            // already closed
            buff_w.append("World!!!");

            // Read Buffer
            System.out.println("" + str_w.getBuffer());
        } catch (IOException ex) {
            System.out.println("buff_str: " + ex.getMessage());
        }
    }
}

Output

buff_str: Stream closed