Pdf Text Extractor using java

We can extract text from pdf file using itext 2.1.6

 PdfReader readerN = new PdfReader("pdfFilename");
            OutputStreamWriter out = new OutputStreamWriter( new FileOutputStream(new File("textFileName")),"Cp1252");

            PdfTextExtractor parse = new PdfTextExtractor(readerN);
            int nrPages = readerN.getNumberOfPages();
           for (int i=2; i<nrPages-2 ; i++) {
                index++;
                 String page = parse.getTextFromPage(i);
                if(page != null){
                    page = page.replace(new StringBuffer("null"), new StringBuffer("??"));
           
                    out.write(page);