[iText-questions] The quotesingle can't show on the PDF file

[Jansonc.dotop.com]

Hello :   I use the iText1.4.jar & tomcat server 4.1(JDK1.4) to export the PDF file but no any quotesingle can show on the PDF file.I use the Aodbe Reader 7.0 to read the PDF file.I wish you can reply to me for this question.Thanks a lot.