import java.io.*;

public class WriteDataExample {
    public static void main(String[] args) {
        // Step 1: Declare OutputStream variables
        OutputStream outputStream = null;
        BufferedOutputStream bufferedOutput = null;

        try {
            // Step 2: Create FileOutputStream to write to a file
            outputStream = new FileOutputStream("data.txt");

            // Step 3: Wrap FileOutputStream with BufferedOutputStream
            bufferedOutput = new BufferedOutputStream(outputStream);

            // Step 4: Write data as bytes
            String message = "Hello PVPSIT, this is buffered output!";
            byte[] data = message.getBytes(); // Convert string to byte array
            bufferedOutput.write(data);       // Write bytes to buffer

            // Step 5: Flush the buffer to ensure data is written to file
            bufferedOutput.flush();

            System.out.println("Data written successfully.");

        } catch (IOException e) {
            System.out.println("Error writing to file: " + e.getMessage());
        } finally {
            // Step 6: Close streams in reverse order of opening
            try {
                if (bufferedOutput != null) bufferedOutput.close();
                if (outputStream != null) outputStream.close();
            } catch (IOException e) {
                System.out.println("Error closing streams: " + e.getMessage());
            }
        }
    }
}