Jasperreports JRException: Could not instantiate report compiler :

Question

I am getting the following error while trying run a jasperreport application that makes a connection to a database and retrieves values based on a parameter passed. I am using eclipse 3.1 and the jetty server.
net.sf.jasperreports.engine.JRException: Could not instantiate report compiler : net.sf.jasperreports.engine.design.JRJavacCompiler
     at net.sf.jasperreports.engine.design.JRDefaultCompiler.getCompiler(JRDefaultCompiler.java:205)
     at net.sf.jasperreports.engine.design.JRDefaultCompiler.loadEvaluator(JRDefaultCompiler.java:216)
     at net.sf.jasperreports.engine.fill.JRFillDataset.createCalculator(JRFillDataset.java:404)
     at net.sf.jasperreports.engine.fill.JRBaseFiller.<init>(JRBaseFiller.java:354)
     at net.sf.jasperreports.engine.fill.JRVerticalFiller.<init>(JRVerticalFiller.java:92)
     at net.sf.jasperreports.engine.fill.JRVerticalFiller.<init>(JRVerticalFiller.java:74)
     at net.sf.jasperreports.engine.fill.JRFiller.createFiller(JRFiller.java:147)
     at net.sf.jasperreports.engine.fill.JRFiller.fillReport(JRFiller.java:57)
     at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:402)
     at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:363)
     at net.sf.jasperreports.engine.JasperRunManager.runReportToPdfStream(JasperRunManager.java:163)
     at net.ensode.jasperbook.FirstReportSendToBrowserServlet.doGet(FirstReportSendToBrowserServlet.java:36)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:459)
     at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
     at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:231)
     at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:629)
     at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:453)
     at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:149)
     at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:123)
     at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:141)
     at org.mortbay.jetty.Server.handle(Server.java:303)
     at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:452)
     at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:721)
     at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:509)
     at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:209)
     at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:349)
     at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:320)
     at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:475)
Caused by: java.lang.ClassCastException
     at net.sf.jasperreports.engine.design.JRDefaultCompiler.getCompiler(JRDefaultCompiler.java:201)
     ... 29 more
The servlet code is given below:
package net.ensode.jasperbook;
import java.sql.*;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.HashMap;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import net.sf.jasperreports.engine.JREmptyDataSource;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JasperCompileManager;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperRunManager;
public class FirstReportSendToBrowserServlet extends HttpServlet {
     protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
          HashMap parameterMap = new HashMap();
          parameterMap.put("value", new Integer(1));
          Connection con;
          try {
               ServletOutputStream servletOutputStream = response.getOutputStream();
               InputStream reportStream = getServletConfig().getServletContext()
                         .getResourceAsStream("/reports/FirstReport.jasper");
               Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
               con=DriverManager.getConnection("jdbc:odbc:att", "att_report", "jasper");
               JasperRunManager.runReportToPdfStream(reportStream, servletOutputStream, parameterMap, con);
               con.close();
               response.setContentType("application/pdf");
               servletOutputStream.flush();
               servletOutputStream.close();
          } catch (JRException e) {
               // display stack trace in the browser
               StringWriter stringWriter = new StringWriter();
               PrintWriter printWriter = new PrintWriter(stringWriter);
               e.printStackTrace(printWriter);
               response.setContentType("text/plain");
               response.getOutputStream().print(stringWriter.toString());
          catch (SQLException e1){
               StringWriter stringWriter = new StringWriter();
               PrintWriter printWriter = new PrintWriter(stringWriter);
               e1.printStackTrace(printWriter);
               response.setContentType("text/plain");
               response.getOutputStream().print(stringWriter.toString());
          catch (ClassNotFoundException e2){
               StringWriter stringWriter = new StringWriter();
               PrintWriter printWriter = new PrintWriter(stringWriter);
               e2.printStackTrace(printWriter);
               response.setContentType("text/plain");
               response.getOutputStream().print(stringWriter.toString());
Could anyone please try and find me a solution.

Answer 1

the jasper report , instructions and examples work
just fine on Creator Studio
Give Creator Studio a Try and you will be relieved of your frustrations
(of course following the sun provided tutorial)