Java Development Tools

Hi All,

When I try to use the below code to compress the pdf file to reduce its size. I am getting compile time error as PdfReader, PdfStamper, PdfWriter class is not existed even I imported the classes as below.

import com.lowagie.text.pdf.PdfReader; 
import com.lowagie.text.pdf.PdfStamper; 
import com.lowagie.text.pdf.PdfWriter; 

        PdfReader reader =
            new PdfReader("C:/_dev_env_/TEMP/compressPDF/TRPT_135002_1470_20131212_121423.PDF");
        PdfStamper stamper =
            new PdfStamper(reader, new FileOutputStream("C:/_dev_env_/TEMP/compressPDF/compressed_Itext.pdf"),
                           PdfWriter.VERSION_1_5);
        stamper.setFullCompression();
        stamper.getWriter().setCompressionLevel(50);
        int total = reader.getNumberOfPages() + 1;
        for (int i = 1; i < total; i++) {
            reader.setPageContent(i, reader.getPageContent(i));
        }
        stamper.close();
        reader.close();

Can you suggest me how to use them. I am using J dev 11.7 ver.

Regards,

Mani