hareesh Puthala

I am getting below error when iam trying to call webservice client class from within a servlet.
But the WSDL client is working absolutely fine as a standalone application.

Sample Code:

public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
APDPRWSDLClient client = new APDPRWSDLClient();
BPEL_ThirdParty service = client.getBPEL_ThirdParty_pt();
String result = service.process(input); // Getting error in this line
}

java.lang.NoSuchMethodError: com.sun.org.apache.xerces.internal.util.NamespaceSupport.containsPrefixInCurrentContext(Ljava/lang/String;)Z
at com.sun.xml.internal.stream.writers.XMLStreamWriterImpl.writeNamespace(XMLStreamWriterImpl.java:1018)
at org.codehaus.xfire.soap.SoapSerializer.writeMessage(SoapSerializer.java:58)
at org.codehaus.xfire.transport.http.HttpChannel.writeWithoutAttachments(HttpChannel.java:56)
at org.codehaus.xfire.transport.http.CommonsHttpMessageSender.getByteArrayRequestEntity(CommonsHttpMessageSender.java:313)
at org.codehaus.xfire.transport.http.CommonsHttpMessageSender.send(CommonsHttpMessageSender.java:251)
at org.codehaus.xfire.transport.http.HttpChannel.sendViaClient(HttpChannel.java:123)
at org.codehaus.xfire.transport.http.HttpChannel.send(HttpChannel.java:48)
at org.codehaus.xfire.handler.OutMessageSender.invoke(OutMessageSender.java:26)
at org.codehaus.xfire.handler.HandlerPipeline.invoke(HandlerPipeline.java:131)
at org.codehaus.xfire.client.Invocation.invoke(Invocation.java:75)
at org.codehaus.xfire.client.Client.invoke(Client.java:335)
at org.codehaus.xfire.client.XFireProxy.handleRequest(XFireProxy.java:77)
at org.codehaus.xfire.client.XFireProxy.invoke(XFireProxy.java:57)
at $Proxy8.process(Unknown Source)
at com.spdcl.aponline.collection.controller.RequestListenerServlet.doGet(RequestListenerServlet.java:61)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Unknown Source)

Environment Details:

JRE 1.5.0_05
TOMCAT 5.5
in the build path i have Myeclipse XFire 1.2 Core,XFire 1.2 JAXB2,XFire 1.2 HttpClient libraries.

Sorry wrongly posted here moved to sockets and internet protocols

I am getting this exception

javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.fatal(Unknown Source)
at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Unknown Source)
at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Unknown Source)
at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(Unknown Source)
at com.sun.net.ssl.internal.ssl.ClientHandshaker.processMessage(Unknown Source)
at com.sun.net.ssl.internal.ssl.Handshaker.processLoop(Unknown Source)
at com.sun.net.ssl.internal.ssl.Handshaker.process_record(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(Unknown Source)
at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(Unknown Source)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getOutputStream(Unknown Source)
at com.spdcl.xmlsender.controller.XMLSenderServlet.sendXMLData(XMLSenderServlet.java:77)
at com.spdcl.xmlsender.controller.XMLSenderServlet.doPost(XMLSenderServlet.java:25)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Unknown Source)
Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
at sun.security.validator.Validator.validate(Unknown Source)
at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
at com.sun.net.ssl.internal.ssl.JsseX509TrustManager.checkServerTrusted(Unknown Source)
... 30 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
at java.security.cert.CertPathBuilder.build(Unknown Source)
... 35 more


Environment details:

Tomcat 5.5
Java 1.5.0_05
I hava added the trusted keystore and copied that generated file in to $JAVA_HOME\jre\lib\security” folder.But still getting the same error.

I am getting this exception

javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.fatal(Unknown Source)
at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Unknown Source)
at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Unknown Source)
at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(Unknown Source)
at com.sun.net.ssl.internal.ssl.ClientHandshaker.processMessage(Unknown Source)
at com.sun.net.ssl.internal.ssl.Handshaker.processLoop(Unknown Source)
at com.sun.net.ssl.internal.ssl.Handshaker.process_record(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(Unknown Source)
at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(Unknown Source)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getOutputStream(Unknown Source)
at com.spdcl.xmlsender.controller.XMLSenderServlet.sendXMLData(XMLSenderServlet.java:77)
at com.spdcl.xmlsender.controller.XMLSenderServlet.doPost(XMLSenderServlet.java:25)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Unknown Source)
Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
at sun.security.validator.Validator.validate(Unknown Source)
at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
at com.sun.net.ssl.internal.ssl.JsseX509TrustManager.checkServerTrusted(Unknown Source)
... 30 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
at java.security.cert.CertPathBuilder.build(Unknown Source)
... 35 more


Environment details:

Tomcat 5.5
Java 1.5.0_05
I hava added the trusted keystore and copied that generated file in to $JAVA_HOME\jre\lib\security” folder.But still getting the same error.

I am getting this exception

javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.fatal(Unknown Source)
at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Unknown Source)
at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Unknown Source)
at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(Unknown Source)
at com.sun.net.ssl.internal.ssl.ClientHandshaker.processMessage(Unknown Source)
at com.sun.net.ssl.internal.ssl.Handshaker.processLoop(Unknown Source)
at com.sun.net.ssl.internal.ssl.Handshaker.process_record(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(Unknown Source)
at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(Unknown Source)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getOutputStream(Unknown Source)
at com.spdcl.xmlsender.controller.XMLSenderServlet.sendXMLData(XMLSenderServlet.java:77)
at com.spdcl.xmlsender.controller.XMLSenderServlet.doPost(XMLSenderServlet.java:25)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Unknown Source)
Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
at sun.security.validator.Validator.validate(Unknown Source)
at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
at com.sun.net.ssl.internal.ssl.JsseX509TrustManager.checkServerTrusted(Unknown Source)
... 30 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
at java.security.cert.CertPathBuilder.build(Unknown Source)
... 35 more


Environment details:

Tomcat 5.5
Java 1.5.0_05
I hava added the trusted keystore and copied that generated file in to $JAVA_HOME\jre\lib\security” folder.But still getting the same error.

J

Hi All,

I am getting this error while iam trying to create connection pool using Mysql DB(5.1) and Tomcat webserver(5.5).

I placed the mysql-connector-java-5.1.13-bin.jar file in tomcat/commons/lib folder and environment variable also set for this jar.

javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial at javax.naming.spi.NamingManager.getInitialContext(Unknown Source) at javax.naming.InitialContext.getDefaultInitCtx(Unknown Source) at javax.naming.InitialContext.getURLOrDefaultInitCtx(Unknown Source) at javax.naming.InitialContext.lookup(Unknown Source)


Here is the code of DBConnectionManager.java

package com.spdcl.connection; import java.sql.Connection; import javax.naming.Context; import javax.naming.InitialContext; import javax.sql.DataSource; public class DBConnectionManager { static private DBConnectionManager instance; static synchronized public DBConnectionManager getInstance() { if (instance == null) { instance = new DBConnectionManager(); } return instance; } public void freeConnection(Connection con) throws Exception { con.close(); } public Connection getConnection(String name) { Connection dbconn = null; try { DataSource ds = null; Class.forName("com.mysql.jdbc.Driver"); String jndiname = "java:/comp/env/jdbc/".concat(name); Context initContext = new InitialContext(); ds = (javax.sql.DataSource) initContext.lookup(jndiname); dbconn = ds.getConnection(); } catch (Exception e) { e.printStackTrace(); } return dbconn; } }

Main class code is:

Connection con = DBConnectionManager.getInstance().getConnection( "MySQLDB");

context.xml code:

<?xml version="1.0" encoding="UTF-8"?> <Context path="C:\Program Files\Apache Software Foundation\Tomcat 5.5\webapps\MySQLTest" docBase="MySQLTest" debug="5" reloadable="true" crossContext="true"> <Resource name="jdbc/MySQLDB" auth="Container" type="javax.sql.DataSource" driverClassName="com.mysql.jdbc.Driver" url="jdbc:mysql://localhost:3306/mysql" username="root" password="hareesh" maxActive="20" maxIdle="5" maxWait="-1" /> </Context>

can anyone help me out.
Thanks in advance.

Yes it is a pure java Application.

My requirement is that can we modify the file and set the pointer at the end of the last line (Next to the last charachter)using java api while we deal with the Files.

That modified text file will be used by our customers to upload those files in to thier SBM(Spot billing machine) machines which is used while taking reading of Electricty Meters.

What i have done usin RandomAcess File was:

RandomAccessFile raf = new RandomAccessFile(filePath.concat("/".concat(filename)), "rw");
long length = raf.length();
raf.setLength(length - 2);
raf.seek(raf.length());
raf.writeByte(8);
raf.close();

Please Any suggestions .

Let me explain in detail.

When i call a procedure it returns me a text file.which i give it for download.

Example text File:
-----------------------


ABCD 5522203000027B1TIRUPATI RC.WADA 232408/02/201001 261107/04/201001 287 0 0^
ABCD 5522203000029B1TIRUPATI RC.WADA 165408/02/201001 165407/04/201002 414 0 0^
*


when i open that text file and press 'Control+End' key.Cursor points at the * location.
But i want the cursor to be at the end of the second line.(Where ^ is a special charachter i.e 'Enter' Charachter)
And one more thing is that i also want to replace the last charachter of the last line to 'BackSpace' charachter and place the cursor next to that.

File should be like this:

ABCD 5522203000027B1TIRUPATI RC.WADA 232408/02/201001 261107/04/201001 287 0 0^
ABCD 5522203000029B1TIRUPATI RC.WADA 165408/02/201001 165407/04/201002 414 0 0#
(where # is the 'Backspace' charachter and when i press 'Control+End' key.Cursor points next to that)


Because in our requirement we need to upload that text file to machine which wont allow the first file.

I did lot of coding using RandomAccess File but of no use.
Can you please help me out.

Hi All,

How can we set cursor position in a text file?
My requirement is that i need to remove the new line charachter (as the cursor points in a new line)and i need to move the cursor to the previous line(end of the line) .

Thanks a lot Ulf Dittmer..

It has done the trick.

Once again thank you very much......

Now it is not even calling the appletcontext.showDocument().

Why this is happening?

hareesh Puthala wrote:

Ulf Dittmer wrote:The NPE occurs in the showDocument method, so the AppletContext is obviously not null.

What's the value of the URL you're passing in? In which browser does this happen?

Value of the URL is: http://10.16.1.43:8090/collectionpak/pages/consumerService.jsp

And the browser is IE 6.0

Here is my code:

import java.applet.Applet; import java.awt.Button; import java.awt.Graphics; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.BufferedWriter; import java.io.FileOutputStream; import java.io.FileWriter; import java.io.PrintStream; import java.io.PrintWriter; import java.net.URL; import java.util.Hashtable; import javax.print.Doc; import javax.print.DocFlavor; import javax.print.DocPrintJob; import javax.print.PrintService; import javax.print.PrintServiceLookup; public class PrintApplet extends Applet implements ActionListener { private static final long serialVersionUID = 1L; String flag = ""; Button btnCreateFile_; Hashtable headers = null; String applFees = "", secDeposit = "", devCharges = "", serviceLineCharges = "", fileName = "", eroname = "", uscno2 = "", RCCODE = "", cahsInWords = "", modeofrec1 = "", ddcheckno1 = "", dddate = "", nameofbank1 = "", cashreceived2 = "", eroc2 = "", paac2 = "", acd2 = "", collect2 = "", rcfee3 = "", currentpr = "", finalprno2 = "", category = "", arrears4 = "", currentdemand2 = "", dt2 = "", uscno3 = "", name4 = "", arrears2 = "", rcname = "", section2 = "", remarks = "", miscFlag = "", stringurl = "", JSESSIONID = ""; String eroName = ""; String misc = ""; String msg_ = "Before printing"; public void init() { fileName = getParameter("fileName"); eroname = getParameter("eroname"); uscno2 = getParameter("uscno2"); RCCODE = getParameter("RCCODE"); cahsInWords = getParameter("cashInWords"); modeofrec1 = getParameter("modeofrec1"); ddcheckno1 = getParameter("ddcheckno1"); dddate = getParameter("dddate"); nameofbank1 = getParameter("nameofbank1"); cashreceived2 = getParameter("cashreceived2"); eroc2 = getParameter("eroc2"); acd2 = getParameter("acd2"); rcfee3 = getParameter("rcfee3"); currentpr = getParameter("currentpr"); finalprno2 = getParameter("finalprno2"); category = getParameter("category"); arrears4 = getParameter("arrears4"); currentdemand2 = getParameter("currentdemand2"); dt2 = getParameter("dt2"); uscno3 = getParameter("uscno3"); name4 = getParameter("name4"); rcname = getParameter("rcname"); section2 = getParameter("section"); misc = getParameter("misc"); remarks = getParameter("remarks"); miscFlag = getParameter("miscFlag"); applFees = getParameter("applFees"); secDeposit = getParameter("devCharges"); devCharges = getParameter("secDeposit"); serviceLineCharges = getParameter("serviceLineCharges"); stringurl = getParameter("stringurl"); btnCreateFile_ = new Button("Print"); headers = new Hashtable(); add(btnCreateFile_); btnCreateFile_.addActionListener(this); } public void actionPerformed(ActionEvent ae) { String str = ae.getActionCommand(); if (str.equals("Print")) { createFile(); btnCreateFile_.setVisible(false); repaint(); } try { String urlstr = getCodeBase().toString(); urlstr = urlstr.concat(stringurl); URL url = new URL(stringurl); System.out.println("urlstr:" + urlstr); System.out.println("APPLCONTEXT:" + this.getAppletContext()); this.getAppletContext().showDocument(url); } catch (Exception e) { } } }I am performing spme business logic in the create method(It creates a text file in the local file system and drives the default printer and prin ts the text file.)


Please look into this ...
Thanks a lot for helping me.

Ulf Dittmer wrote:The NPE occurs in the showDocument method, so the AppletContext is obviously not null.

What's the value of the URL you're passing in? In which browser does this happen?

Value of the URL is: http://10.16.1.43:8090/collectionpak/pages/consumerService.jsp

And the browser is IE 6.0

Ulf Dittmer wrote:So the applet calls the servlet using java.net.URLConnection or something similar? If so, then the servlet can't cause the applet page to redirect to another page - the applet needs to do that by calling AppletContext.showDocument.

Iam getting this Exception while iam trying to call the method 'this.getAppletContext().showDocument(url)';


Exception in thread "AWT-EventQueue-2" java.lang.NullPointerException
at sun.plugin2.main.client.MessagePassingExecutionContext.showDocument(Unknown Source)
at sun.plugin2.main.client.MessagePassingExecutionContext.showDocument(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$AppletContextImpl.showDocument(Unknown Source)
at PrintApplet.actionPerformed(PrintApplet.java:105)
at java.awt.Button.processActionEvent(Unknown Source)
at java.awt.Button.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

But the appletcontext object is not null which i found on the java console.

Thanks in advance.