Java Byte Array Save to File nio writeHeader(File input, ByteArrayOutputStream headerStream)

Description

write Header

License

Open Source License

Declaration

public static void writeHeader(File input, ByteArrayOutputStream headerStream) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.io.*;

import java.nio.charset.Charset;

public class Main {
    public static void writeHeader(File input, ByteArrayOutputStream headerStream) {
        try {/*from   ww w .j a v  a 2  s  .c  o m*/
            //Read original file contents -> memstream
            BufferedReader br = new BufferedReader(new FileReader(input));
            StringBuilder sb = new StringBuilder();
            String line;
            while ((line = br.readLine()) != null)
                sb.append(line).append(String.format(System.lineSeparator()));
            br.close();

            //Header -> original file
            FileOutputStream outFileStream = new FileOutputStream(input);

            //header + original file
            OutputStreamWriter memWriter = new OutputStreamWriter(headerStream,
                    Charset.forName("UTF-8").newEncoder());
            memWriter.write(sb.toString());
            memWriter.close();
            headerStream.writeTo(outFileStream);

            headerStream.close();
            outFileStream.close();

        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

Related

1. fileWriteBytes(byte[] data, String file)
2. writeBytes(final byte[] bytes, final OutputStream output)
3. writeIntChars(int value, int index, byte[] buf)
4. writeToBinaryFile(String filename, byte[] data)
5. writeToFile(File file, byte[] content)