4. ByteBuffer

• Class java.nio.ByteBuffer helper object represents a sequence of raw bytes

  • wrap() method wraps a byte array into a ByteBuffer object:

    
        String str = "XYZ";
        byte[] data = str.getBytes();
        ByteBuffer out = ByteBuffer.wrap( data );
    
    

  • FileChannel object can then write the ByteBuffer into the file:

    
        fc.write( out );