this is about response pls read message

[khatarnakkhatri]

can we
do
OutputStream out=response.getOutputStream();
and
writer = new PrintWriter(response.getWriter());

for same response object because it is showing following error


java.lang.IllegalStateException: getWriter() has already been called for this response
at org.apache.catalina.connector.Response.getOutputSt ream(Response.java:568)
at org.apache.catalina.connector.ResponseFacade.getOu tputStream(ResponseFacade.java:180)
at com.sample.ChartViewer.doGet(ChartViewer.java:201)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:697)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:810)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:173)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doF ilter(ReplyHeaderFilter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invo ke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invo ke(StandardContextValve.java:178)
at org.jboss.web.tomcat.security.SecurityAssociationV alve.invoke(SecurityAssociationValve.java:175)
at org.jboss.web.tomcat.security.JaccContextValve.inv oke(JaccContextValve.java:74)
at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:105)
at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve .invoke(CachedConnectionValve.java:156)
at org.apache.catalina.core.StandardEngineValve.invok e(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.servic e(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(H ttp11Processor.java:869)
at org.apache.coyote.http11.Http11BaseProtocol$Http11 ConnectionHandler.processConnection(Http11BaseProt ocol.java:664)
at org.apache.tomcat.util.net.PoolTcpEndpoint.process Socket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.MasterSlaveWorkerThread .run(MasterSlaveWorkerThread.java:112)
at java.lang.Thread.run(Thread.java:595)

[r035198x]

You can't call them both. Read the specs for them.