java.lang.OutOfMemoryError when trying to read huge PDF file to byte array [closed]

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I'm trying to read huge pdf file using byte Array, Here is my code for it.

String RESULT "D/new/certficateVisualFinal.pdf";
    try {
        FileInputStream fileInputStream=null;

        File file = new File(RESULT);

        byte[] bFile = new byte[(int) file.length()];


            //convert file into array of bytes
        fileInputStream = new FileInputStream(file);
        fileInputStream.read(bFile);
        fileInputStream.close();

        reader = new PdfReader(bFile);
        pdfStamper = new PdfStamper(reader, new FileOutputStream(outPut));

        pdfStamper.setOutlines(outlineVisual);
        pdfStamper.setFormFlattening(true);

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

But I got a OutOfMemoryErro when trying to

fileInputStream.read(bFile);

This is the Error

Exception in thread "AWT-EventQueue-0" java.lang.OutOfMemoryError
at java.io.FileInputStream.readBytes(Native Method)
at java.io.FileInputStream.read(FileInputStream.java:220)

please help me.Thank you.

Answer 1

Don't use the byte array at all. PdfReader has a constructor with an InputStream parameter, so you can just pass your FileInputStream directly to that.