BufferedOutputStream in Java

In Java, BufferedOutputStream is a class that extends the FilterOutputStream class and provides buffering functionality to output streams. This buffering reduces the number of times the underlying output stream must be accessed and can result in improved performance. Here is an example of how the BufferedOutputStream class is used in Java:

import java.io.BufferedOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class BufferedOutputStreamExample {
    public static void main(String[] args) {
        try {
            FileOutputStream fileOutput = new FileOutputStream("example.txt");
            BufferedOutputStream bufferedOutput = new BufferedOutputStream(fileOutput);
            byte[] data = "Hello, World!".getBytes();
            bufferedOutput.write(data);
            bufferedOutput.flush();
            bufferedOutput.close();
        } catch (IOException e) {
            System.out.println("An error occurred while writing to the file: " + e.getMessage());
        }
    }
}

In this example, we create a FileOutputStream to a file named “example.txt”, and we use it to create a BufferedOutputStream. We create a byte array data containing the text “Hello, World!”, and we use the write() method of the BufferedOutputStream class to write the data to the output stream. We then flush the output stream using the flush() method to ensure that all data is written to the underlying output stream, and we close the BufferedOutputStream using the close() method.

The BufferedOutputStream class in Java has the following methods:

1. void close() throws IOException: Closes the output stream and releases any system resources associated with it.
2. void flush() throws IOException: Flushes the output stream, forcing any buffered output bytes to be written to the underlying output stream.
3. void write(byte[] b) throws IOException: Writes an array of bytes to the output stream.
4. void write(byte[] b, int off, int len) throws IOException: Writes up to len bytes of data from an array of bytes to the output stream, starting at the specified offset off.
5. void write(int b) throws IOException: Writes a single byte of data to the output stream.

Note that when using a BufferedOutputStream, it is important to properly close the output stream using the close() method to ensure that all system resources are released. Additionally, the BufferedOutputStream should be used when writing large amounts of data to an output stream to improve performance by reducing the number of writes to the underlying output stream.