Home » Core Java » io » BufferedOutputStream » Write byte array to file with BufferedOutputStream

About Ilias Tsagklis

Ilias Tsagklis
Ilias is a software developer turned online entrepreneur. He is co-founder and Executive Editor at Java Code Geeks.

Write byte array to file with BufferedOutputStream

In this example we shall show you how to write a byte array to a file using the BufferedOutputStream. This class implements a buffered output stream. By setting up such an output stream, an application can write bytes to the underlying output stream without necessarily causing a call to the underlying system for each byte written. To write a byte array to a file one should perform the following steps:

  • Create a FileOutputStream to write to the file with the specified name.
  • Create a BufferedOutputStream for the FileOutputStream.
  • Use write(byte[] b) API method. It writes the specified byte array to this buffered output stream,

as described in the code snippet below.

package com.javacodegeeks.snippets.core;

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

public class WriteByteArrayToFileWithBufferedOutputStream {
	
	public static void main(String[] args) {
		
		String filename = "output.txt";
		String output = "Java Code Geeks - Java Examples";
		
		BufferedOutputStream bos = null;
		FileOutputStream fos = null;

		try {
			
			// create FileOutputStream from filename
			fos = new FileOutputStream(filename);

			// create BufferedOutputStream for FileOutputStream
			bos = new BufferedOutputStream(fos);

			bos.write(output.getBytes());
			
		}
		catch (FileNotFoundException fnfe) {
			System.out.println("File not found" + fnfe);
		}
		catch (IOException ioe) {
			System.out.println("Error while writing to file" + ioe);
		}
		finally {
			try {
				if (bos != null) {
					bos.flush();
					bos.close();
				}
			}
			catch (Exception e) {
				System.out.println("Error while closing streams" + e);
			}
		}
	}
}

 
This was an example of how to write a byte array to a file using the BufferedOutputStream in Java.

(No Ratings Yet)
Start the discussion Views Tweet it!

Do you want to know how to develop your skillset to become a Java Rockstar?

Subscribe to our newsletter to start Rocking right now!

To get you started we give you our best selling eBooks for FREE!

 

1. JPA Mini Book

2. JVM Troubleshooting Guide

3. JUnit Tutorial for Unit Testing

4. Java Annotations Tutorial

5. Java Interview Questions

6. Spring Interview Questions

7. Android UI Design

 

and many more ....

 

Receive Java & Developer job alerts in your Area

 

Leave a Reply

avatar
  Subscribe  
Notify of