Problemas no classpath

galera,to tentando compilar o arquivo PdfServlet.java que vem no diretório do jasper,mas ocorrem vários erros…





PdfServlet.java:5: package dori.jasper.engine does not exist


import dori.jasper.engine.*;


^


PdfServlet.java:16: cannot resolve symbol


symbol  : class JasperReport


location: class servlets.PdfServlet


public static byte[] runReportToPdf(JasperReport jasperReport,


                                    ^


PdfServlet.java:19: cannot resolve symbol


symbol  : class JRException


location: class servlets.PdfServlet


                                                         throws JRExceptio


                                                                ^


PdfServlet.java:16: missing method body, or declare abstract


public static byte[] runReportToPdf(JasperReport jasperReport,


                     ^





PdfServlet.java:39: cannot resolve symbol


symbol  : variable JasperRunManager


location: class servlets.PdfServlet


                                JasperRunManager.runReportToPdf(


                                ^


PdfServlet.java:45: cannot resolve symbol


symbol  : class JRException


location: class servlets.PdfServlet


                catch (JRException e)





Alguém poderia me ajudar,acho que o problema esta no classpath…