Continous exceptions in JSE 8 IDE

Hi,
Lastly, it has been happening more and more often that the IDE (SJSE8 on Linux, up to date with current patches) launchs an exception like this (or similar):
Annotation: Exception occurred in Request Processor
java.lang.NullPointerException
     at org.netbeans.modules.javacore.parser.ClassFileInfoUtil.getJavadocFile(ClassFileInfoUtil.java:705)
     at org.netbeans.modules.javacore.parser.ClassFileInfoUtil.getHtmlReader(ClassFileInfoUtil.java:633)
     at org.netbeans.modules.javacore.parser.ClassFileInfoUtil.createParamsInfo(ClassFileInfoUtil.java:582)
     at org.netbeans.modules.javacore.parser.ClassFileInfoUtil.createMethodInfo(ClassFileInfoUtil.java:213)
     at org.netbeans.modules.javacore.parser.ClassFileInfoUtil.createClassInfo(ClassFileInfoUtil.java:153)
     at org.netbeans.modules.javacore.parser.ClassFileInfoUtil.createClassInfo(ClassFileInfoUtil.java:66)
     at org.netbeans.modules.javacore.jmiimpl.javamodel.ResourceImpl.getResInfoFromClassFile(ResourceImpl.java:413)
I've searched in the forum and I've found previous threads about this. In some of them, it was said that this is "standard behaviour" with NetBeans and that the only workaround was to clean .jstudio/Ent8/var/cache/. So I did it, and problems went away... for a few days.
Now it is happening again, and cleaning the .../var/cache directory doesn't seem to help at all. IDE is almost unusable, because the exception is thrown every time the IDE tries to offer contextual help of methods, or check the syntax. Basically, if I leave the cursor resting for more than two seconds, the exception window appears.
Is there anything I can do to relieve the problem? I'd rather not upgrade to NB 5.5 or so if possible, because I've read that it changes the project information files and I wouldn't be able to downgrade if needed. Besides, it requires more memory (min. 512 MB) and it could be a bit too much for my laptop (512 MBytes, 1,3 GHz Celeron).
TIA

I'm curious why you are so
reluctant about moving to NetBeans 5.5 + Enteprirse
Pack 5.5. They ARE better performing and more stable
than JSE 8.Because, while I usually work in my desktop computer (AMD XP 2800+, 1 GB RAM), I want to be able to work also in my laptop (I have Linux on both machines and got a scripting procedure to keep them in sync), and my laptop only has 512 MB RAM, while Netbeans 5.5 requires just that and recommends 1 GB:
http://www.netbeans.org/community/releases/55/relnotes.html#system_requirements
And I'm not sure that's going to fix the problem. I think I'm going to try first updating JDK to 1.5.0.7 (I have 1.5.0.6).

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Good day house,
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Can you show me some of your code? This works for me.
Also, you say that you are working with 6.0sp3. Are you sure? sp3 hasn't been
released yet, except in a very limited beta. (I believe only internally, but I
could be wrong about that.)
David
[email protected] wrote:
Hi all,
I have created a very simple servlet and an index.html file with a link
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Files are attached.
Name: simple.ear
simple.ear Type: application/x-unknown-content-type-ear_auto_file
Encoding: base64
Description: filename="simple.ear"

I have tried to implement jasper report but getting exceptions at run time

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JasperReport jasperReport;
JasperPrint jasperPrint;
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import net.sf.jasperreports.engine.*;
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import net.sf.jasperreports.engine.fill.*;
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public class Simple_Report_1143636234024_954843 extends JREvaluator
^
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symbol : class JRFillParameter
location: class Simple_Report_1143636234024_954843
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^
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symbol : class JRFillParameter
location: class Simple_Report_1143636234024_954843
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^
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symbol : class JRFillParameter
location: class Simple_Report_1143636234024_954843
private JRFillParameter parameter_REPORT_PARAMETERS_MAP = null;
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symbol : class JRFillParameter
location: class Simple_Report_1143636234024_954843
private JRFillParameter parameter_IS_IGNORE_PAGINATION = null;
^
/home/navneet/Simple_Report_1143636234024_954843.java:29: cannot find symbol
symbol : class JRFillParameter
location: class Simple_Report_1143636234024_954843
private JRFillParameter parameter_REPORT_CLASS_LOADER = null;
^
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symbol : class JRFillParameter
location: class Simple_Report_1143636234024_954843
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^
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symbol : class JRFillParameter
location: class Simple_Report_1143636234024_954843
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symbol : class JRFillParameter
location: class Simple_Report_1143636234024_954843
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^
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symbol : class JRFillParameter
location: class Simple_Report_1143636234024_954843
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^
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symbol : class JRFillParameter
location: class Simple_Report_1143636234024_954843
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^
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symbol : class JRFillVariable
location: class Simple_Report_1143636234024_954843
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^
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symbol : class JRFillVariable
location: class Simple_Report_1143636234024_954843
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^
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symbol : class JRFillVariable
location: class Simple_Report_1143636234024_954843
private JRFillVariable variable_REPORT_COUNT = null;
^
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symbol : class JRFillVariable
location: class Simple_Report_1143636234024_954843
private JRFillVariable variable_PAGE_COUNT = null;
^
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symbol : class JRFillVariable
location: class Simple_Report_1143636234024_954843
private JRFillVariable variable_COLUMN_COUNT = null;
^
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symbol : class JRFillParameter
location: class Simple_Report_1143636234024_954843
parameter_REPORT_RESOURCE_BUNDLE = (JRFillParameter)pm.get("REPORT_RESOURCE_BUNDLE");
^
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symbol : class JRFillParameter
location: class Simple_Report_1143636234024_954843
parameter_REPORT_CONNECTION = (JRFillParameter)pm.get("REPORT_CONNECTION");
^
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symbol : class JRFillParameter
location: class Simple_Report_1143636234024_954843
parameter_REPORT_PARAMETERS_MAP = (JRFillParameter)pm.get("REPORT_PARAMETERS_MAP");
^
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symbol : class JRFillParameter
location: class Simple_Report_1143636234024_954843
parameter_IS_IGNORE_PAGINATION = (JRFillParameter)pm.get("IS_IGNORE_PAGINATION");
^
/home/navneet/Simple_Report_1143636234024_954843.java:66: cannot find symbol
symbol : class JRFillParameter
location: class Simple_Report_1143636234024_954843
parameter_REPORT_CLASS_LOADER = (JRFillParameter)pm.get("REPORT_CLASS_LOADER");
^
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symbol : class JRFillParameter
location: class Simple_Report_1143636234024_954843
parameter_REPORT_VIRTUALIZER = (JRFillParameter)pm.get("REPORT_VIRTUALIZER");
^
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symbol : class JRFillParameter
location: class Simple_Report_1143636234024_954843
parameter_REPORT_LOCALE = (JRFillParameter)pm.get("REPORT_LOCALE");
^
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symbol : class JRFillParameter
location: class Simple_Report_1143636234024_954843
parameter_REPORT_DATA_SOURCE = (JRFillParameter)pm.get("REPORT_DATA_SOURCE");
^
/home/navneet/Simple_Report_1143636234024_954843.java:70: cannot find symbol
symbol : class JRFillParameter
location: class Simple_Report_1143636234024_954843
parameter_REPORT_SCRIPTLET = (JRFillParameter)pm.get("REPORT_SCRIPTLET");
^
/home/navneet/Simple_Report_1143636234024_954843.java:71: cannot find symbol
symbol : class JRFillParameter
location: class Simple_Report_1143636234024_954843
parameter_REPORT_MAX_COUNT = (JRFillParameter)pm.get("REPORT_MAX_COUNT");
^
/home/navneet/Simple_Report_1143636234024_954843.java:88: cannot find symbol
symbol : class JRFillVariable
location: class Simple_Report_1143636234024_954843
variable_PAGE_NUMBER = (JRFillVariable)vm.get("PAGE_NUMBER");
^
/home/navneet/Simple_Report_1143636234024_954843.java:89: cannot find symbol
symbol : class JRFillVariable
location: class Simple_Report_1143636234024_954843
variable_COLUMN_NUMBER = (JRFillVariable)vm.get("COLUMN_NUMBER");
^
/home/navneet/Simple_Report_1143636234024_954843.java:90: cannot find symbol
symbol : class JRFillVariable
location: class Simple_Report_1143636234024_954843
variable_REPORT_COUNT = (JRFillVariable)vm.get("REPORT_COUNT");
^
/home/navneet/Simple_Report_1143636234024_954843.java:91: cannot find symbol
symbol : class JRFillVariable
location: class Simple_Report_1143636234024_954843
variable_PAGE_COUNT = (JRFillVariable)vm.get("PAGE_COUNT");
^
/home/navneet/Simple_Report_1143636234024_954843.java:92: cannot find symbol
symbol : class JRFillVariable
location: class Simple_Report_1143636234024_954843
variable_COLUMN_COUNT = (JRFillVariable)vm.get("COLUMN_COUNT");
^
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at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
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at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
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at javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
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at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
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at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:595)

You have no permission to create a report. You have to create a permisson-entry into your server.policy. Then it would be work.

Error in Form Printing ADS: SOAP Runtime Exception

Hi Gurus,
while printing the PF forms or form 16 for that matter i am getting an error
ADS: SOAP Runtime Exception: CSoapExceptionTransport :(100101)
Any idea as to why the same is coming..and how to go about solving the issue..........
Regards
Ankush

Check with ADS (Adobe Development Server) configurations with BASIS people.
They will solve this.
Regards
...Sadhu

Asynchronous Web Services raising NULL exception

Hello experts,
I'm consuming an asynchronous WS in my WD App, I'm not expecting any response from this WS but when I execute te request I'm getting a NULL exception.. Any ideas in how to handle this WS or how to call them.. I already tested the WS with other tools like soapUI and XI's SXMB_MONI trx and I can check that the WS is working properly with the parameters I'm sending from the WD... the thing is that I'm always getting the null exception and I don't know what else to do..
Thanx in advance
JV

Detailed Error Information
Detailed Exception Chain
java.lang.NullPointerException
     at com.sap.engine.services.webservices.espbase.client.dynamic.impl.DOperationImpl.initParameters_DocumentStyle(DOperationImpl.java:59)
     at com.sap.engine.services.webservices.espbase.client.dynamic.impl.DOperationImpl.initParameters(DOperationImpl.java:46)
     at com.sap.engine.services.webservices.espbase.client.dynamic.impl.DOperationImpl.<init>(DOperationImpl.java:40)
     at com.sap.engine.services.webservices.espbase.client.dynamic.impl.DInterfaceImpl.initOperationNameToOperationMapping(DInterfaceImpl.java:150)
     at com.sap.engine.services.webservices.espbase.client.dynamic.impl.DInterfaceImpl.<init>(DInterfaceImpl.java:55)
     at com.sap.engine.services.webservices.espbase.client.dynamic.impl.DGenericServiceImpl.initPortNameToInterfaceMapping(DGenericServiceImpl.java:78)
     at com.sap.engine.services.webservices.espbase.client.dynamic.impl.DGenericServiceImpl.<init>(DGenericServiceImpl.java:50)
     at com.sap.engine.services.webservices.espbase.client.dynamic.GenericServiceFactory.createService(GenericServiceFactory.java:71)
     at com.sap.engine.services.webservices.espbase.client.dynamic.GenericServiceFactory.createService(GenericServiceFactory.java:91)
     at com.sap.tc.webdynpro.model.webservice.metadata.WSModelInfo.getOrCreateWsrService(WSModelInfo.java:419)
     at com.sap.tc.webdynpro.model.webservice.metadata.WSModelInfo.readOperationsFromWSDL(WSModelInfo.java:371)
     at com.sap.tc.webdynpro.model.webservice.metadata.WSModelInfo.importMetadataInternal(WSModelInfo.java:341)
     at com.sap.tc.webdynpro.model.webservice.metadata.WSModelInfo.importMetadata(WSModelInfo.java:325)
     at com.sap.tc.webdynpro.model.webservice.metadata.WSModelInfo$Cache.getModelInfo(WSModelInfo.java:198)
     at com.sap.tc.webdynpro.model.webservice.metadata.WSModelInfo.getModelInfoFromCacheOrCreate(WSModelInfo.java:1029)
     at com.sap.tc.webdynpro.model.webservice.metadata.WSModelInfo.getModelInfoFromCacheOrCreate(WSModelInfo.java:247)
     at com.sap.tc.webdynpro.model.webservice.gci.WSTypedModel.<init>(WSTypedModel.java:41)
     at com.intelematica.issste.modelos.wsmifoviprevalidao.WSMIfoviPreValidaO.<init>(WSMIfoviPreValidaO.java:45)
     at com.intelematica.issste.webdynpro.FIVISSSTE_Presupuesto_comp.wsMIfoviPreValidaO(FIVISSSTE_Presupuesto_comp.java:125)
     at com.intelematica.issste.webdynpro.wdp.InternalFIVISSSTE_Presupuesto_comp.wsMIfoviPreValidaO(InternalFIVISSSTE_Presupuesto_comp.java:212)
     at com.intelematica.issste.webdynpro.FOVISSSTE_Presupuestos_View.onActionUploadFile(FOVISSSTE_Presupuestos_View.java:272)
     at com.intelematica.issste.webdynpro.wdp.InternalFOVISSSTE_Presupuestos_View.wdInvokeEventHandler(InternalFOVISSSTE_Presupuestos_View.java:153)
     at com.sap.tc.webdynpro.progmodel.generation.DelegatingView.invokeEventHandler(DelegatingView.java:87)
     at com.sap.tc.webdynpro.progmodel.controller.Action.fire(Action.java:67)
     at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.doHandleActionEvent(WindowPhaseModel.java:420)
     at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.processRequest(WindowPhaseModel.java:132)
     at com.sap.tc.webdynpro.clientserver.window.WebDynproWindow.processRequest(WebDynproWindow.java:335)
     at com.sap.tc.webdynpro.clientserver.cal.AbstractClient.executeTasks(AbstractClient.java:143)
     at com.sap.tc.webdynpro.clientserver.session.ApplicationSession.doProcessing(ApplicationSession.java:299)
     at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessingStandalone(ClientSession.java:711)
     at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessing(ClientSession.java:665)
     at com.sap.tc.webdynpro.clientserver.session.ClientSession.doProcessing(ClientSession.java:232)
     at com.sap.tc.webdynpro.clientserver.session.RequestManager.doProcessing(RequestManager.java:152)
     at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doContent(DispatcherServlet.java:62)
     at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doPost(DispatcherServlet.java:53)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:390)
     at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:264)
     at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:347)
     at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:325)
     at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:887)
     at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:241)
     at com.sap.engine.services.httpserver.server.Client.handle(Client.java:92)
     at com.sap.engine.services.httpserver.server.Processor.request(Processor.java:148)
     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)

Proper use of Exceptions..

Hi all,
I consider myself a fairly competent Java developer. However, and some of you will no doubt say I am not competent for asking this, I can't help but be mystified over the right way to use exception handling. This is a broad question, so let me narrow it down to two specific areas, the UI/client side, and the server side. I am familiar with log4J, JDK 1.4 logging, etc, so I am aware of logging exceptions at runtime for possible use in debugging a problem as well, although this may be yet another topic of discussion... is it good to log exceptions, or should they always be handled and thus never need to be logged?
So, the client/awt/swing application: When and how should they be used? Should I wrap the entire app in a try..catch block that catches Throwable, and throughout my code whereever an exception can occur, allow it to propogate to the main handler? IF so, does that handler do some checks and in some cases display a dialog to the user, and in some cases ignores them? Let's cut out the small things like a NumberFormatException where you convert a string to an int, this and others like it are generally consumed at the spot and not displayed to a user "Hey, somewhere, I tried converting this string to a number and it didn't work..". I know this isn't something you display, at least usually.
I have read that it is better to catch a general exception instead of specific exceptions, and then again I have read the opposite as well. These articles coming from supposed knowledgeable developers, so it throws a monkey wrench in figuring out what is the best way to use them. I have read that if you don't plan on handling it, rethrow it, possibly with an application specific wrapper exception to detail the issue more, OR better yet, add the throws clause and don't even try to handle it so that it gets thrown up the chain of method execution so someone else can handle it. I have read anytime you have the possibility of an exception, catch it and do something right there. So, in the case of a client/swing type of app, what is the rule of thumb?
On the server side it is of course a bit different in that nothing usually gets back to the client, or at least, most shouldn't. If a client accesses EJB that does some logic, such as a DB search and can't find results, no doubt it doesn't need to throw an exception, but instead return null, right? I do realize the scope of this is broad. Is it a client swing/web app talking to EJB via Remote objects, is the servlet in the same JVM as the ejb, does the particular error need to go back to the client, such as no results found, or should it stay, be handled and consumed on the server side? What about the case where you are running a server daemon, something that just continually runs, like an FTP server or something? How are those handled?
Anyway, I would love to really understand the nature of how these should be used in different scenarios. I look forward to some replies, detailed if necessary.
Thank you.

Do NOT ever catch Exception: you lose all granularity and make
maintenance harder.I strongly disagree. 2 good reasons:
1. An error/exception might occur in between 2 operations/changes that must be synched. If one fail, the application must make sure to change back everything that is not consistent within the application.
2. An error on a low level makes no sense to the user. I use to catch exceptions at key-points of the application and restate more informative what has failed.
* Exception chaining/trees
If a bulk operation had multiple failures, the exception that came
back had a dotted list to be displayed to the user.With the new Exception in Java 1.4 forward is excellent for exception-chaining. You could improve that to be a list of errors as stated above or even an exception-tree.
* Informative information
For each exception in an exception chain you could state how informative that exception is, which must of course be done in your own Exception class. Then you might choose to only show the most informative exceptions in the chain.
* Error code
Errocode is good to be able to make a more informative documentation on the side, what different errors are.
* Status / kind
You should also keep track of what kind of exception your application throws, which once again is easier to keep track of in your own exception, eg with a "status" attribute. Then on a FATALERROR you could shut down the program etc.
This Exception may give some ideas (add "informative" attribute etc, make other exceptions inherit this one etc):
public class StatusException extends Exception{
////////////////////// constants ////////////////////////
//Operation successful - probably never used
public final static int SUCCESS=0;
//Operation failed
public final static int FAILURE=1;
//Operation successful, but some information is passed
public final static int INFORMATION=2;
//Operation failed, but retry is encouraged
public final static int AGAIN=3;
//Normal error, eg nullpointerexception
public final static int WARNING=4;
//Internal error, implementation error
public final static int INTERNALERROR=5;
//Serious error, application might need to be restarted
public final static int ERROR=6;
//Serious error and data is corrupted
public final static int FATALERROR=7;
public final static int DEFAULTSTATUS=WARNING;//default status
public final static int GENERALERROR=0;//default error code
///////////////////// attributes ////////////////////////
public int status;
public int errorCode;//a code that is free to use for anything
///////////////////// constructor ///////////////////////
public StatusException(String message, Throwable t, int status, int errorCode) {
super(message,t);
status=_status;
errorCode=_errorCode;
/////////////////////// methods /////////////////////////
public Throwable[] getThrowableTrail(){
ArrayList list=new ArrayList();
Throwable t=this;
while(t!=null){
list.add(t);
t=t.getCause();
Throwable[] trail=new Throwable[list.size()];
list.toArray(trail);
return trail;
Gil

BSP Exception: Implementation of page changed during runtime

Hello All,
I have developed the BSP application using MVC pattern, which is working absoulutely fine in Development system.
Now I transported the application to QA system and tried to execute that. The transports were successful.
But when tried to test in Quality it gave the above exception. When I debugged the same, I found that create_view method was not executing correctly and was generating the exception message.
Any idea why its causing such problem.Do we need to add some patch to quality system?
Thanks in advance.
Regards
Rajeev

Infact I re-activated the entire BSP application and now its working fine.
anyways thanks for the reply.
regards
rajeev

RMI Exception - $Proxy0

hey all,
I am trying to create a Javacard project, such that I enable a host and an applet to
communicate with each other. I created a simple applet, that compiles and is
loaded on the smartcard without problems, but when I try to communicate to it
with my host application I get an exception: "$Proxy0". has anyone idea of what
can be wrong ?
applet = new JCApplet(card, TABLE_APPLET_AID, 0, TABLE_APPLET_AID.length);
// !! NOTE: THIS LINE BELOW CAUSES THE ABOVE EXCEPTION !!!
table = (SampleInterface)RMIObjectFactory.getInitialReference(applet);
I can give the full code, which is actually not big, if someone is more interested.
Thanks in advance.
Edited by: Cih on Nov 11, 2007 9:32 AM

If you copy a class/interface to another package then it is a different class/interface.
Put the common interface in some "shared" package.

Continous exceptions in JSE 8 IDE

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