Runtime execution of a Class from applet.....

Hi all,
I have a applet in a jar(say A.jar) and it is signed. One more jar(say B.jar) is created and it contains a class that has to be executed using Runtime.exec() from the applet (in other jar -> A.jar). Both jars present in server and jar list is mentioned using <PARAM NAME=CACHE_ARCHIVE VALUE="...."> tag where the VALUE is assigned with list of jar names.
So how to execute a Class at Runtime present in one jar from a applet present in other jar.
Please help....
Thanx,
Soni

thx Clemens... thx for the reply...
Here i am not accessing a applet from another applet. I want to Run a Java Application from a Applet (using Runtime class). How to do this? Here the Java Application class exist in a seperate jar other than the jar which holds Applet class. Both jars are signed and both exist in server.
thx,
Soni.

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BalusC wrote:
san_4u wrote:
how can i made a HttpClient PostMethod using java applets? as i have experience making request using HttpURLConnection.POST method. ok first of all i am going make a search of this only after i will tell. please be onlineOnce again, see link [3] in my first reply of your former topic.
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I am working against the deadline and i am sweating now. From past few days i have been working on a problem and now its the time to shout out.
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http://www.theserverside.com/discussions/thread.tss?thread_id=12194
http://www.jguru.com/faq/view.jsp?EID=1051835
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 at com.sap.engine.services.servlets_jsp.server.servlet.InvokerServlet.service(InvokerServlet.java:156)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
 at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:401)
 at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:266)
 at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:387)
 at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:365)
 at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:944)
 at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:266)
 at com.sap.engine.services.httpserver.server.Client.handle(Client.java:95)
 at com.sap.engine.services.httpserver.server.Processor.request(Processor.java:160)
 at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:33)
 at com.sap.engine.core.cluster.impl6.session.MessageRunner.run(MessageRunner.java:41)
 at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)
 at java.security.AccessController.doPrivileged(Native Method)
 at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:100)
 at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:170)
Caused by: com.sapportals.portal.prt.component.PortalComponentException: Error occurs during the compilation of java generated from the jsp
 at com.sapportals.portal.prt.servlets_jsp.server.jsp.JSPCompiler.compile(JSPCompiler.java:108)
 at com.sapportals.portal.prt.servlets_jsp.server.jsp.JSPCompiler.run(JSPCompiler.java:140)
 at com.sapportals.portal.prt.core.broker.JSPComponentItem.compileJSP(JSPComponentItem.java:291)
 at com.sapportals.portal.prt.core.broker.JSPComponentItem.getComponentInstance(JSPComponentItem.java:141)
 at com.sapportals.portal.prt.core.broker.PortalComponentItemFacade.service(PortalComponentItemFacade.java:355)
 at com.sapportals.portal.prt.core.broker.PortalComponentItem.service(PortalComponentItem.java:934)
 at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:435)
 ... 46 more
Caused by: com.sapportals.portal.prt.servlets_jsp.server.compiler.CompilingException: Error occurs during the rendering of jsp component
 at com.sapportals.portal.prt.servlets_jsp.server.jsp.JSPParser.parse(JSPParser.java:2189)
 at com.sapportals.portal.prt.servlets_jsp.server.jsp.JSPCompiler.compile(JSPCompiler.java:81)
 ... 52 more

Why am i getting this error page and how to resolve this? Please help. Thanks.
Regards,

I am facing one more problem now. I tried to create a new user in Portal and when i try to login with this new account i get following error message:
Portal Runtime Error
An exception occurred while processing a request for :
iView : com.sap.portal.runtime.logon.default
Component Name : com.sap.portal.runtime.logon.default
Error occurs during the rendering of jsp component.
Exception id: 10:04_22/01/07_0010_6052850
See the details for the exception ID in the log file
Following is the error message snippet from the log file for this exception ID:

###Exception ID:10:04_22/01/07_0010_6052850
[EXCEPTION]
#1#com.sapportals.portal.prt.component.PortalComponentException: Error in service call of Resource
Component : com.sap.portal.runtime.logon.default
Component class : com.sapportals.portal.ume.component.logon.SAPMLogonComponent
User : J2EE_GUEST
 at com.sapportals.portal.prt.core.PortalRequestManager.handlePortalComponentException(PortalRequestManager.java:969)
 at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:444)
 at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:527)
 at com.sapportals.portal.prt.component.AbstractComponentResponse.include(AbstractComponentResponse.java:89)
 at com.sapportals.portal.prt.component.PortalComponentResponse.include(PortalComponentResponse.java:232)
 at com.sap.security.core.logonadmin.ComponentAccessToLogic.gotoPage(ComponentAccessToLogic.java:109)
 at com.sap.security.core.sapmimp.logon.SAPMLogonLogic.executeRequest(SAPMLogonLogic.java:251)
 at com.sapportals.portal.ume.component.logon.SAPMLogonComponent.doContent(SAPMLogonComponent.java:37)
 at com.sapportals.portal.prt.component.AbstractPortalComponent.serviceDeprecated(AbstractPortalComponent.java:209)
 at com.sapportals.portal.prt.component.AbstractPortalComponent.service(AbstractPortalComponent.java:114)
 at com.sapportals.portal.prt.core.PortalRequestManager.callPortalComponent(PortalRequestManager.java:328)
 at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:136)
 at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:189)
 at com.sapportals.portal.prt.component.PortalComponentResponse.include(PortalComponentResponse.java:215)
 at com.sapportals.portal.ume.component.logon.SAPMLogonCertComponent.doContent(SAPMLogonCertComponent.java:33)
 at com.sapportals.portal.prt.component.AbstractPortalComponent.serviceDeprecated(AbstractPortalComponent.java:209)
 at com.sapportals.portal.prt.component.AbstractPortalComponent.service(AbstractPortalComponent.java:114)
 at com.sapportals.portal.prt.core.PortalRequestManager.callPortalComponent(PortalRequestManager.java:328)
 at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:136)
 at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:189)
 at com.sapportals.portal.prt.component.PortalComponentResponse.include(PortalComponentResponse.java:215)
 at com.sapportals.portal.prt.pom.PortalNode.service(PortalNode.java:646)
 at com.sapportals.portal.prt.core.PortalRequestManager.callPortalComponent(PortalRequestManager.java:328)
 at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:136)
 at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:189)
 at com.sapportals.portal.prt.core.PortalRequestManager.runRequestCycle(PortalRequestManager.java:753)
 at com.sapportals.portal.prt.connection.ServletConnection.handleRequest(ServletConnection.java:240)
 at com.sapportals.portal.prt.dispatcher.Dispatcher$doService.run(Dispatcher.java:545)
 at java.security.AccessController.doPrivileged(Native Method)
 at com.sapportals.portal.prt.dispatcher.Dispatcher.service(Dispatcher.java:405)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
 at com.sap.engine.services.servlets_jsp.server.servlet.InvokerServlet.service(InvokerServlet.java:156)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
 at com.sap.engine.services.servlets_jsp.server.runtime.RequestDispatcherImpl.doWork(RequestDispatcherImpl.java:321)
 at com.sap.engine.services.servlets_jsp.server.runtime.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:377)
 at com.sap.portal.navigation.Gateway.service(Gateway.java:101)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
 at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:401)
 at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:266)
 at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:387)
 at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:365)
 at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:944)
 at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:266)
 at com.sap.engine.services.httpserver.server.Client.handle(Client.java:95)
 at com.sap.engine.services.httpserver.server.Processor.request(Processor.java:160)
 at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:33)
 at com.sap.engine.core.cluster.impl6.session.MessageRunner.run(MessageRunner.java:41)
 at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)
 at java.security.AccessController.doPrivileged(Native Method)
 at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:100)
 at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:170)
Caused by: com.sapportals.portal.prt.component.PortalComponentException: Error occurs during the compilation of java generated from the jsp
 at com.sapportals.portal.prt.servlets_jsp.server.jsp.JSPCompiler.compile(JSPCompiler.java:108)
 at com.sapportals.portal.prt.servlets_jsp.server.jsp.JSPCompiler.run(JSPCompiler.java:140)
 at com.sapportals.portal.prt.core.broker.JSPComponentItem.compileJSP(JSPComponentItem.java:291)
 at com.sapportals.portal.prt.core.broker.JSPComponentItem.getComponentInstance(JSPComponentItem.java:141)
 at com.sapportals.portal.prt.core.broker.PortalComponentItemFacade.service(PortalComponentItemFacade.java:355)
 at com.sapportals.portal.prt.core.broker.PortalComponentItem.service(PortalComponentItem.java:934)
 at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:435)
 ... 49 more
Caused by: com.sapportals.portal.prt.servlets_jsp.server.compiler.CompilingException: Error occurs during the rendering of jsp component
 at com.sapportals.portal.prt.servlets_jsp.server.jsp.JSPParser.parse(JSPParser.java:2189)
 at com.sapportals.portal.prt.servlets_jsp.server.jsp.JSPCompiler.compile(JSPCompiler.java:81)
 ... 55 more
Though i am still able to login with any of my old accounts, but not with the newly created ones. I thought this might have been because of the new roles that i assigned, but i see the above error message even when i haven't assigned any role. How do i get rid of this one now?
Thanks and Regards,

Sending a file from Applet to servlet HELP me Please

Sorry, i have the problem this is my code Applet & Servlet but it seems working asynchronously if you have some ideas please reply me i send bytes on outputstream but the inputstream of servlet receive nothing bytes but write my system.out.print on screen server:
Applet:
URL servletURL = new URL(codebase, "/InviaFile/servlet/Ricevi");
HttpURLConnection urlConnection = (HttpURLConnection) servletURL.openConnection();
urlConnection.setRequestMethod("POST");
urlConnection.setUseCaches(false);
urlConnection.setDoOutput(true);
urlConnection.setDoInput(true);
urlConnection.setAllowUserInteraction(false);
urlConnection.setRequestProperty("Content-Type", "application/octet-stream");
urlConnection.setRequestProperty("Content-length", String.valueOf(100));
urlConnection.connect();
if(urlConnection.HTTP_BAD_REQUEST == HttpURLConnection.HTTP_BAD_REQUEST){
/*System.out.println("Cattiva Richiesta: "+urlConnection.getContentEncoding());
System.out.println("Tipo di metodo: "+urlConnection.getRequestMethod());
System.out.println("Tipo di Risposta: "+urlConnection.getResponseCode());
System.out.println("Tipo di messaggio: "+urlConnection.getResponseMessage());
System.out.println("Tipo di contenuto: "+urlConnection.getContentType());
System.out.println("Tipo di lunghezza contenuto: "+urlConnection.getContentLength());
System.out.println("Tipo di doinput: "+urlConnection.getDoInput());
System.out.println("Tipo di doouput: "+urlConnection.getDoOutput());
System.out.println("Tipo di URL: "+urlConnection.getURL());
System.out.println("Tipo di propriet� richiesta: "+urlConnection.getRequestProperty("Content-Type"));
System.out.println("Entra if");
DataOutputStream dout = new DataOutputStream(urlConnection.getOutputStream());
InputStream is = urlConnection.getInputStream();
if(ritornaFile("C:/Ms.tif", dout))System.out.println("Finita lettura");
dout.close();
urlConnection.disconnect();
System.out.println("Fine Applet");
}catch(Exception e) { System.err.println(e.getMessage());e.printStackTrace();}
public boolean ritornaFile(String file, OutputStream ots)throws Exception{
FileInputStream f = null;
try{
f = new FileInputStream(file);
byte[] buf = new byte[4 * 1024];
int byteLetti;
while((byteLetti = f.read()) != -1){ots.writeByte(buf, 0, byteLetti);ots.flush();
while((byteLetti = f.read()) != -1){ots.write(byteLetti);ots.flush();
System.out.println("byteLetti= "+byteLetti);
return true;
}catch(Exception ex){
System.err.println(ex.getMessage());
return false;
}finally{
if(f != null)f.close();
Servlet:
HttpSession ses = request.getSession(true);
System.out.println("Passa servlet "+request.getMethod());
System.out.println("Passa servlet "+ses.getId());
ServletInputStream servletinputstream = request.getInputStream();
DataInputStream dis = new DataInputStream(request.getInputStream());
int c = dis.available();
System.out.println("c="+c);
//ServletOutputStream servletoutputstream
//response.getOutputStream();
response.setContentType("application/octet-stream");
System.out.println("URI= "+request.getRequestURI());
System.out.println("pathTranslated: "+request.getPathTranslated());
System.out.println("RemoteUser: "+request.getRemoteUser());
System.out.println("UserInRole: "+String.valueOf(request.isUserInRole("")));
System.out.println("pathInfo: "+request.getPathInfo());
System.out.println("Protocollo: "+request.getProtocol());
System.out.println("RemoteAddr:"+request.getRemoteAddr());
System.out.println("RemoteHost:"+request.getRemoteHost());
System.out.println("SessionID:"+request.getRequestedSessionId());
System.out.println("Schema:"+request.getScheme());
System.out.println("SeesionValido:"+String.valueOf(request.isRequestedSessionIdValid()));
System.out.println("FromURL:"+String.valueOf(request.isRequestedSessionIdFromURL()));
int i = request.getContentLength();
System.out.println("i: "+i);
ritornaFile(servletinputstream, "C:"+File.separator+"Pluto.tif");
System.out.println("GetMimeType= "+getServletContext().getMimeType("Ms.tif"));
InputStream is = request.getInputStream();
int in = is.available();
System.out.println("Legge dallo stream in="+in);
DataInputStream diss = new DataInputStream(servletinputstream);
int ins = diss.read();
System.out.println("Legge dallo stream ins="+ins);
int disins = diss.available();
System.out.println("Legge dallo stream disins="+disins);
is.close();
System.out.println("Fine Servlet");
catch(Exception exception) {
System.out.println("IOException occured in the Server: " + exception.getMessage());exception.printStackTrace();
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, java.io.IOException {
processRequest(request, response);
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, java.io.IOException {
processRequest(request, response);
/** Returns a short description of the servlet.
public String getServletInfo() {
return "Short description";
public void ritornaFile(InputStream its, String fileDest )throws Exception{
FileOutputStream f = null;
try{
f = new FileOutputStream(fileDest);
byte[] buf = new byte[2 * 1024];
int byteLetti;
while((byteLetti = its.read()) != -1){
f.write(buf, 0, byteLetti);
f.flush();
System.out.println("Byteletti="+byteLetti);
}catch(Exception ex){
System.err.println(ex.getMessage());
}finally{
if(f != null)f.close();

Hi all,
Can anyone help me.I am trying to send an audio file from a applet to servlet with HTTP method(no raw sockets), also the servlet shld be able to save the file on the server.Any suggestions welcome.USing audiostream class from javax.sound.sampled.
The part of applet code which calls servlet is :
URL url = new URL("http://" + host + "/" + context + "/servlet/UserUpdateWorkLogAudio?userid=" + userId.replace(' ', '+') + "&FileName=" + filename.replace(' ', '+'));
URLConnection myConnection = url.openConnection();
myConnection.setUseCaches(false);
myConnection.setDoOutput(true);
urlConnection.setRequestProperty("Content-Type", "application/octet-stream");
myConnection.connect();
out = new BufferedOutputStream(myConnection.getOutputStream());
AudioSystem.write(audioInputStream, fileType,out); // IS THIS RIGHT APPROACH?
************************end of applet code**********************
************************servlet code******************************
try
{BufferedInputStream in = new BufferedInputStream(request.getInputStream());
????????What code shld i write here to get the audio file stream
BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(filename));
*********************************************end***********************
Thanks
Joe.

Runtime execution of a Class from applet.....

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