Write byte to file using BufferedOutputStream

 

public static void writeByte2File(byte b, String fileName)
{
    BufferedOutputStream bos = null;
     
    try
    {
        //Create FileOutputStream for the file
        FileOutputStream fos = new FileOutputStream(fileName);     
        //Create BufferedOutputStream object 
//for FileOutputStream
        bos = new BufferedOutputStream(fos);
              
        /*
        * To write a byte to BufferedOutputStream use,
        * public void write(int b) method of BufferedOutputStream
        * class.
        *
        * This method may throw IOException if something goes
        * wrong.
        */
         
        System.out.println("BufferedOutputStream: writing file");
         
        bos.write(b);
         
        System.out.println("BufferedOutputStream : written file");
    }
    catch(FileNotFoundException fnfe)
    {
        System.out.println("Specified 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){}
         
        }
}

Eg. of calling function:

String fileName="C:\demo.txt";
byte b = 65;
//this will write a character represented by ascii 65
//i.e. 'A'
writeByte2File(b,fileName);