PDF to byte array and vice versa

Question

I need to convert pdf to byte array and vice versa.

Can any one help me?

This is how I am converting to byte array

public static byte[] conve         


        

Answer 1

This works for me:

try(InputStream pdfin = new FileInputStream("input.pdf");OutputStream pdfout = new FileOutputStream("output.pdf")){
    byte[] buffer = new byte[1024];
    int bytesRead;
    while((bytesRead = pdfin.read(buffer))!=-1){
        pdfout.write(buffer,0,bytesRead);
    }
}

But Jon's answer doesn't work for me if used in the following way:

try(InputStream pdfin = new FileInputStream("input.pdf");OutputStream pdfout = new FileOutputStream("output.pdf")){

    int k = readFully(pdfin).length;
    System.out.println(k);
}

Outputs zero as length. Why is that ?