Difference in throwing and catching an exception?

What is the difference between throwing an exception and catching an exception?

Catching an exception is where the code you right says "Hey I am going to handle any exceptions coming this way"
Throwing is where the method in which an exception is thrown says "I am not taking responsibility for any exceptions thrown"

Similar Messages

Wehre can i find all the throw and catch exceptions

I havent had much success figuring out which predefined exceptions i should/can use. Can someone please guide me where i can find out what kind of throw and catch exceptions are there in java and how and where can i find them. thanks.

Read this first: http://java.sun.com/docs/books/jls/second_edition/html/exceptions.doc.html#44044
You can't find them all anywhere. You'll just encounter them as you use different APIs.
One of the most basic concepts around exceptions has to do with the difference between checked and unchecked exceptions. Any exception that extends RuntimeException is unchecked. Which means that if you call a method that throws an unchecked exception, you don't have to provide a catch block. These exceptions are usually thrown for things that could be avoided, i.e. programmer error.
The compiler will require you to have a catch block for all checked exceptions. This means you should take steps in your code to handle them and retry the operation, such as user errors.

Write and read txt files and catch the exceptions

hey everyone, im in a bit of a bind. im trying to set up this try catch statement. here is what i have for code so far.
import java.util.Scanner;
import java.io.*;
public class Warning
    //   Reads student data (name, semester hours, quality points) from a
    //   text file, computes the GPA, then writes data to another file
    //   if the student is placed on academic warning.
    public static void main (String[] args)
     int creditHrs;         // number of semester hours earned
     double qualityPts;     // number of quality points earned
     double gpa;            // grade point (quality point) average
     String line, name, inputName = "students.dat";
     String outputName = "warning.dat";
     try
          Scanner FileScan1 = new Scanner (new File("students.dat"));
          // Set up scanner to input file
          // Set up the output file stream
          // Print a header to the output file
          outFile.println ();
          outFile.println ("Students on Academic Warning");
          outFile.println ();
          // Process the input file, one token at a time
          while (FileScan1.hasNext())//there is another line...
              {               // Get the credit hours and quality points and
               // determine if the student is on warning. If so,
               // write the student data to the output file.
          // Close output file
     catch (FileNotFoundException exception)
          System.out.println ("The file " + inputName + " was not found.");
     catch (IOException exception)
          System.out.println (exception);
     catch (NumberFormatException e)
          System.out.println ("Format error in input file: " + e);
}I am pretty sure the layout is good to go, but first and foremost that try statement is hanging me up. Could someone give me some suggestions about how i should set this up.
i want to read in this students.dat file, then output another file called warning.dat.
Thanks i really appreicate the help.

no, i was really hoping to just see if the way it is
set up it will be doable, that way i wouldn't be
working on code that was impossiable to sort through
properlyFair enough.
One thing I'd suggest is that if you're really basically only going to be printing the exceptions, and since that is the top-level method (main) --
I'd instead just add some "throws" clauses to main, get rid of the try/catch stuff, and just let the VM handle the exceptions for you. It will print them, just like you're doing, except that it will also print the stack traces, which you are not doing.
If you're going to handle exceptions, it's better to actually do something about them rather than just print them - otherwise you might just as well let the runtime do that for you.

Throwing and catching deliberate errors in bash

Hello,
In many languages one can throw deliberate errors of a specific kind as well as catch-trap for specific errors. I'm having a hard time determining how to do this in bash 3.2 with it's 'trap' command.
Moreover, I can't figure out whether or not if it's even possible to catch for specific thrown errors defined by a scripter in bash. My own tests have led to a dead end and I haven't come any better understanding from reading the bash info docs, and numerous online and in print examples of the 'trap' command.
Basically, I wish to...
1. First, have scripts throw a specifically, identifiable, unique error when a certain known bad state has been encountered that they can't handle.
2. Secondly, to able to test for whether scripts are throwing an specific error under a certain condition.
3. Trap for and catch only that specific error and then keep on going, performing further automated tests.
Is this possible in bash?
Below is an example which might better illustrate what I've attempted to do. It unfortunately, doesn't do what's needed at the moment. i.e.- It will catch all errors and exits but not a specific one.
#--- The example below traps all errors but not the specific one.
particular_function()
current_status="some known bad condition"
if [ "$current_status" = "some known bad condition" ]; then
# Encountered some known condition we can't handle so throw specific error.
echo "Encountered a, we knew this would happen, type error."
exit -99
fi
testmethod_for_expectederror()
trap 'echo "function threw expected error code as it should."' EXIT
particular_function
testmethod_for_expectederror
echo "Continued passed caught error as desired and continuing further tests..."
Thanks,
-Anthony

{quote:title=BobHarris wrote:}The bash trap statement was not intended as an alternate way to return errors.
But if you want to generate your own signals, then use the kill command.
See "man 1 kill". {quote}
It sounds like I'm attempting to pound a square peg through a round hole? Attempting workarounds, like shaving off the corners of the peg, might eventually just lead to loss of sanity, time wasted - gone forever, never to return.
So, perhaps I'll try some other method.
If it offers a little more clarity, I'm trying determine [how to write tests|http://xp123.com/xplor/xp0101/index.shtml|Test-First Stoplight - write a test first before writing a line of code.], in bash, for situations where a script [should halt executing|http://xunitpatterns.com/Test%20Method.html#Expected%20Exception%20Te st|Expected exception test pattern] when it encounters something it can't handle rather than keep on going causing potential mishaps.
Basically, I would like to avoid causing the [xUnit testing framework|http://www.martinfowler.com/bliki/Xunit.html|xUnit testing frameworks in XP] I'm using [(shUnit2)|http://code.google.com/p/shunit2/|shUnit2 project site] from incorrectly reporting expected errors, that are suppose to be thrown, by a script, as failures. An expected, [correctly thrown error|http://books.google.ca/books?id=gFgndevwMAC&pg=PA163&lpg=PA163&dq=%22exceptiontest%22+%22test+driven+development%22patterns&source=bl&ots=enHrtsSunH&sig=PbbvWbea_VkqVAbdGYZwJDUcygI&hl=en&ei=XQslS qzSDs-EmQfIvqCFCA&sa=X&oi=bookresult&ct=result&resnum=1|Catch expected exceptions and ignore them. in TDD by Kent Beck] should be counted as a success by the framework in that context. Assuming, the script didn't exit in a bad way. At the same time, unforeseen errors should not be blocked and should propagate up to be reported as an erring test.
Thanks for your help,
-Anthony

How to throw or catch sql exception for executeReader sql adapter

Wcf sql adapter was created and executeReader was used.
When an invalid sql statement was constructed and send it to wcf sql adapter, it will hanging there, and no response. No exception was catched even though send chape  was inside a catch block. How can I catch this kind of exception
or throw this exception ? I need to give client an exception resposne.
thanks
Gary

I used scope with exception handle which has Exception object type: "System.SystemException".
I guess this type "System.SystemException" can catch any exception, including sql exception. Maybe I am wrong. I got error from window event:
A message sent to adapter "WCF-Custom" on send port "WcfSendPort_SqlAdapterBinding_DalCore_Custom" with URI "mssql://shig-quad-2k3e1//DataSourceOne?" is suspended.
Error details: System.Data.SqlClient.SqlException: Incorrect syntax near '='.
Server stack trace:
   at System.ServiceModel.AsyncResult.End[TAsyncResult](IAsyncResult result)
   at System.ServiceModel.Channels.ServiceChannel.SendAsyncResult.End(SendAsyncResult result)
   at System.ServiceModel.Channels.ServiceChannel.EndCall(String action, Object[] outs, IAsyncResult result)
   at System.ServiceModel.Channels.ServiceChannel.EndRequest(IAsyncResult result)
Exception rethrown at [0]:
   at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
   at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
   at System.ServiceModel.Channels.IRequestChannel.EndRequest(IAsyncResult result)
   at Microsoft.BizTalk.Adapter.Wcf.Runtime.WcfClient`2.RequestCallback(IAsyncResult result)
MessageId: {B24EF5B8-298A-4D4F-AA98-5E639361A7DB}
InstanceID: {F8924129-265B-4652-B20E-8D25F8F20A51}
If "System.SystemException" can't catch all exception, which type can catch all exception ? I want to catch all exception in this catch block.
thanks
Gary

Difference between throw and throws keyword

any1 knows?????

Hi,
The throws keyword is used to declare that a method can throw a type of exception.
Ex:
public void foo() throws Exception {
The throw keyword actually throws an exception.
Ex:
throw new Exception("An error occured...");
/Roger

How to generate and catch FP exceptions?

I use try-catch to trap integer arithmetic exceptions, but how do I set up my program to trap divide by zero and overflow for flotaing point exceptions?
Is it necessary to have a try-catch for every single FP operation in my program? Like, can I put a "catch-all" piece of code somewhere?

Division with zero in fp doesn't raise any exceptions since the result is presentable as a floating point number. You can check if the result is NaN or +/- infinity.
double number = 1.0 / 0.0;
if (number == Double.POSITIVE_INFINITY) {
shout("Hey, we just trapped infinity in our variable!!!!");
}

Configuring a Block Step and catching an exception

Hi,
Can we catch an un-handled exception from an Synchronous step(proxy-send-receive), within a BPM? Can we send the error back to the Sender? How do we go about dealing it when , the process in EOIO mode. having queues...i think such exceptions will lead to queues getting held up..
Thanks & Regards
XA

> Can we catch an un-handled exception from an Synchronous step(proxy-send-receive), within a BPM? Can we send the error back to the Sender?
Unhandled Exception cuasing Response mapping failed? if it is not then you can send response back to Sender.
the process in EOIO mode. having queues...i think such exceptions will lead to queues getting held up..
Yes,mostly it happens.
Regards,
Raj

With out try and catch

with out any try and catch is exception handling is possible in java when doing manupulation with database.
assume mydatabase is oracle,if i am going to insert a record of a primarykey field, which is already existing.i don't want to put with in try and catch.This is my case.if u have the answer for this please mail me.
thanks
rajan

assume mydatabase is oracle,if i am going to insert a
record of a primarykey field, which is already existing.
i don't want to put with in try and catch.why not? i thought the fact that checked exceptions get thrown from methods is a good thing, since you're forced either to deal with the fault immediately, or throw to the next level up, possibly transformed into an application-level exception. if methods were to simply return method-specific error codes, nothing forces anything in the program to deal with errors in a reasonable manner. not that exceptions force sensible handling of the fault--but they do force recognition of the fault.
what alternative do you desire?
--p

Can't catch the exception when transaction rollback ,BPEL/SOA 11G,updated!

Hi Guys ,
I have two insert/update invoke actions through dbadpter in my BPEL process .
When I set the GetActiveUnitOfWork property of those two db adapters to true ,it successfully makes the global transaction work . any of them failed will cause the other rollback.
But the CatchAll brunch can't catch the exception in that case,
I can only see exception message from the system output :
02/11/2009 11:36:46 AM oracle.toplink.transaction.AbstractSynchronizationListener beforeCompletion
WARNING:
Local Exception Stack:
Exception [TOPLINK-4002] (Oracle TopLink - 11g Release 1 (11.1.1.1.0) (Build 090527)): oracle.toplink.exceptions.DatabaseException
Internal Exception: java.sql.SQLIntegrityConstraintViolationException: ORA-00001: unique constraint (Table1_PK) violated
from BPEL console , you can't even see the error , the process finished with no exception.
When I set GetActiveUnitOfWork to false, CatchAll brunch is able to catch the exception , but global rollback is not working .
I try all the other method like set the transaction property of BPEL to required , using checkpoint() in java embedding . it looks like only way is set GetActiveUnitOfWork to true, but can't catch exception.
Here are some updated:
Here is my process
Main Sequence
Invoke (dbadapter update)
Invoke (dbadapter insert)
Global CatchAll
Invoke(jmsAdapter sendjms)
if I disable the CatchAll branch , when insert failed , the insert will rollback as well, even GetActiveUnitOfWork set to false.
enable CatchAll branch , even doing nothing in this branch , the update won't rollback when insert failed. it looks like when catch the exception , bpel seems not rollback , I try to add throw rollback in catchall branch, no any effect.
any clue ?
Kevin
Edited by: kyi on Nov 5, 2009 10:10 AM

Hi All,
We are also facing a similar kind of issue.
We have a simple BPEL which will makes use of JAva embedding to call an end point to check its availibility.
The Java code for cheking the enpoint connectivity is below
try{
boolean endpointAvailable = false;
long start = System.currentTimeMillis();
int endpointTestURL_port = 8445 ;
int endpointTestURL_timeout = 500;
String endpointTestURL_queryString = "" ;
String endpointTestURL_protocol = (String)getVariableData ("endpointProtocol");
addAuditTrailEntry("endpointTestURL_protocol: " + endpointTestURL_protocol);
String endpointTestURL_host = (String)getVariableData ("endpointHost");
addAuditTrailEntry("endpointTestURL_hostl: " + endpointTestURL_host);
URL endpoint = new URL(endpointTestURL_protocol, endpointTestURL_host, 8445, endpointTestURL_queryString);
addAuditTrailEntry("endpoint object is created" );
String endpointTestURL = endpoint.toExternalForm();
addAuditTrailEntry("Checking availability of endpoint at URL: " + endpointTestURL);
// Configure connection
HttpURLConnection connection = (HttpURLConnection)endpoint.openConnection();
connection.setRequestMethod("GET");
addAuditTrailEntry("The Method is Get");
connection.setConnectTimeout(5000);
addAuditTrailEntry("Timeout is 500 ms");
// Open connection
connection.connect();
addAuditTrailEntry("Open Connection");
String responseMessage = connection.getResponseMessage();
addAuditTrailEntry("Recieved availability response from endpoint as: " + responseMessage);
// Close connection
connection.disconnect();
endpointAvailable = true;
if (endpointAvailable)
setVariableData("crmIsAvailable", "true");
else
setVariableData("crmIsAvailable", "false");
catch(Exception e)
System.out.println ("Error in checking endpoint availability " + e) ;
addAuditTrailEntry("error message is : " +e);
When we run the above as a seperate java program it runs fine i.e goes to the catch block and catches the exception.
But when we run it within the java embedding in BPEL(11G) it gives us the follwoing error.
The reason was The execution of this instance "490001" for process "default/GMDSSalesLeadsBackMediationInterface!1.0*soa_e1a6362f-c148-417c-819c-9327017ebfa4" is supposed to be in an active jta transaction, the current transaction status is "ROLLEDBACK" .
Consult the system administrator regarding this error.
     at com.oracle.bpel.client.util.TransactionUtils.throwExceptionIfTxnNotActive(TransactionUtils.java:119)
     at com.collaxa.cube.engine.CubeEngine.store(CubeEngine.java:4055)
     at com.collaxa.cube.engine.CubeEngine.endRequest(CubeEngine.java:4372)
     at com.collaxa.cube.engine.CubeEngine.endRequest(CubeEngine.java:4281)
     at com.collaxa.cube.engine.CubeEngine._createAndInvoke(CubeEngine.java:713)
     at com.collaxa.cube.engine.CubeEngine.createAndInvoke(CubeEngine.java:545)
     at com.collaxa.cube.engine.delivery.DeliveryService.handleInvoke(DeliveryService.java:654)
     at com.collaxa.cube.engine.ejb.impl.CubeDeliveryBean.handleInvoke(CubeDeliveryBean.java:355)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:597)
     at com.bea.core.repackaged.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:310)
     at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
     at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
     at com.bea.core.repackaged.springframework.jee.intercept.MethodInvocationInvocationContext.proceed(MethodInvocationInvocationContext.java:104)
     at oracle.security.jps.ee.ejb.JpsAbsInterceptor$1.run(JpsAbsInterceptor.java:88)
     at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:313)
     at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:414)
     at oracle.security.jps.wls.JpsWeblogicEjbInterceptor.runJaasMode(JpsWeblogicEjbInterceptor.java:61)
     at oracle.security.jps.ee.ejb.JpsAbsInterceptor.intercept(JpsAbsInterceptor.java:106)
     at oracle.security.jps.ee.ejb.JpsInterceptor.intercept(JpsInterceptor.java:106)
     at sun.reflect.GeneratedMethodAccessor960.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:597)
     at com.bea.core.repackaged.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:310)
     at com.bea.core.repackaged.springframework.jee.intercept.JeeInterceptorInterceptor.invoke(JeeInterceptorInterceptor.java:69)
     at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
     at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
     at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
     at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
     at com.bea.core.repackaged.springframework.jee.spi.MethodInvocationVisitorImpl.visit(MethodInvocationVisitorImpl.java:37)
     at weblogic.ejb.container.injection.EnvironmentInte
we also get
BEA1-108EA2A88DAF381957FF
weblogic.transaction.internal.TimedOutException: Transaction timed out after 301 seconds
BEA1-108EA2A88DAF381957FF
     at weblogic.transaction.internal.ServerTransactionImpl.wakeUp(ServerTransactionImpl.java:1733)
     at weblogic.transaction.internal.ServerTransactionManagerImpl.processTimedOutTransactions(ServerTransactionManagerImpl.java:1578)
     at weblogic.transaction.internal.TransactionManagerImpl.wakeUp(TransactionManagerImpl.java:1900)
     at weblogic.transaction.internal.ServerTransactionManagerImpl.wakeUp(ServerTransactionManagerImpl.java:1488)
     at weblogic.transaction.internal.WLSTimer.timerExpired(WLSTimer.java:35)
     at weblogic.timers.internal.TimerImpl.run(TimerImpl.java:273)
     at weblogic.work.SelfTuningWorkManagerImpl$WorkAdapterImpl.run(SelfTuningWorkManagerImpl.java:528)
     at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
     at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
javax.ejb.EJBException: Transaction Rolledback.: weblogic.transaction.internal.TimedOutException: Transaction timed out after 301 seconds
BEA1-108EA2A88DAF381957FF
We tried the following
Increase the JTA timeout in the EM console to a larger value like 600 secs.
The BPEL instance is not getting created.
Any help would be appreciated
Thanks
Lalit

Difference Between Errors and Exception?

I want to know what is the difference between Error and Exception?

Everything is sadly enough catchable as Throwable but
you should never catch Errors. They are an indication
that something has gone wrong in the JVM and they are
not recoverable.Although it is clear that Sun recommends against catching Errors (".. indicates
serious problems that a reasonable application should not try to catch.. etc.."), sometimes, it makes sense to catch some type of Errors.
There was that Java editor (I forgot the name) which would catch OutOfMemoryErrors when the user would try to open a file that was too large.
So instead of crashing, the application would recover from the Error, and I personnally thought that was an interesting feature. At least, a better alternative than the whole application failing.

Bug? EJB method Return Value and Client Catch the Exception?

oc4j 9.0.3 on the windows 2000
I write a Stateless Session Bean named SB1 ,
and define application exception.
The Code as follow:
public class AppErrorException extends Exception
public interface SB1 extends EJBObject
public String getMemono(String sysID, String rptKind, String parentMemono)
throws RemoteException, AppErrorException;
public class SB1Bean implements SessionBean
public String getMemono(String sysID, String rptKind, String parentMemono)
throws RemoteException, AppErrorException
throw new AppErrorException("Error in getMemono");
public class SB1TestClient
try
memomo= sb1.getMemono(.....);
catch(AppErrorException ae)
ae.printStackTrace();
I found a bug.
If SB1.getMemono() throws the AppErrorException, but SB1TestClient will not catch any Exception.
It is not normal!!!!
[cf]
But If I convert "public String getMemono(...)" into "public void getMemono(...)",
When SB1.getMemono() throws the AppErrorException, but SB1TestClient will catch any Exception.
It is normal.

getMemono(.......)'s code as follow:
public String getMemono(String sysID, String rptKind, String parentMemono)
throws AppErrorException
log("getMemono("+sysID+", "+rptKind+", "+parentMemono+")");
Connection connection= null;
CallableStatement statement = null;
String memono= "";
short retCode= -1;
String retMsg= "";
try
String sql= this.CALL_SPGETMEMONO;
connection = ResourceAssistant.getDBConnectionLocal("awmsDS");
statement= connection.prepareCall(sql);
statement.setString(1, sysID.trim());
statement.setString(2, rptKind.trim());
statement.setString(3, parentMemono.trim());
statement.registerOutParameter(4, java.sql.Types.VARCHAR);
statement.registerOutParameter(5, java.sql.Types.SMALLINT);
statement.registerOutParameter(6, java.sql.Types.VARCHAR);
statement.executeQuery();
retCode= statement.getShort(5);
retMsg= statement.getString(6);
log("retCode="+retCode);
log("retMsg="+retMsg);
if (retCode==AppConfig.SHORT_SP_RETCODE_FAILED)
log("retCode==AppConfig.SHORT_SP_RETCODE_FAILED");
this.sessionContext.setRollbackOnly();
throw new AppErrorException(retMsg);
memono= statement.getString(4);
log("memono="+memono);
if (rptKind.trim().length()<6)
log("rptKind.trim().length()<6");
this.sessionContext.setRollbackOnly();
throw new AppErrorException("rptKind.trim().length()<6");
memono= "SS";
catch (AppErrorException ae)
log("catch(AppErrorException ae)");
throw ae;
//throw new EJBException(ae.getErrMsg());
catch (Exception e)
log("catch (Exception e)");
this.sessionContext.setRollbackOnly();
throw new AppErrorException(IExceptionConst.ERR_MSG_SYSMEMONO_00000, e.toString());
//throw new EJBException(IExceptionConst.ERR_MSG_SYSMEMONO_00000+", "+e.toString());
finally
log("this.sessionContext.getRollbackOnly()="+this.sessionContext.getRollbackOnly());
ResourceAssistant.cleanup(connection,statement);
return memono;

Unable to catch the exceptions caused by '|', '"' and '~' symbol in the URL

I have a VB.net website with .Net framework version 1.1.
I am able to catch all the exceptions and redirect to Custom error screen.
However if I enter the invalid characters in URL specifically '|', '"' and '~' it throws "ArgumentException" with message as "?" and not able to redirect this to Custom error screen.
All other invalid characters and symbols are being handled properly. Custom error screen is set in WEB.config and it is working for all the exceptions.
Please help me find a way to catch and redirect this exception to Custom error screen.

Hello Mr. Monkeyboy,
One of the security solutions ran a security test by entering the wrong characters in the URL (Few more cases) and there by finding if the site redirects to Custom webpage in case of errors and exceptions or not.
Our site is redirecting to Custom error page for all the errors and exceptions except when entered '|','"' or '`' in the url.
Example: If I enter: https://www.somesite.com/NotExists.aspx this get redirected to Custom error screen.
However If I enter https:////www.somesite.com/NotExi|sts.aspx this goes to Server Error in "/somesite" page.
Please note, both the URL is invalid, however one redirects to Custom error where another doesn't.
Thanks for letting me know the lack of clarity in the initial question, hope I made it clear.
I still don't understand the issue. And you should probably be posting the question in one of the ASP.Net forums which I provided a link to in my original post.
You say you enter a URL in your website. But you make no mention of how that is done. Therefore even if you post a question in one of the ASP.Net forums you will need to explain what you mean by entering a URL in your Website.
For example. "We have a website. A user can browse to the website with a WebBrowser. Then in a textbox on the website they can enter a URL (for whatever reason your website would allow a user browsing your website with a webbrowser to want to enter
some URL for some reason into a textbox at your website) and select a button (to do who knows what) and we need to validate the URL does not contain invalid characters."
Maybe these links can help or not.
Validator.Url Method
PathIsURL function
Pinvoke.Net - pathisurl (shlwapi)
Uri.TryCreate Method
I suppose you could even use Regex to validate a URL based on Regex patterns that you should be able to find on the net for doing so with Visual Basic. But I would suppose you would want to provide whoever is placing invalid URL's on the website with the
result displaying the invalid URL and which characters within it are invalid maybe.
I suspect you could even try to validate a URL with a DNS by finding out if it exists or not.
La vida loca

Adding a new UDF throws a null pointer exception and modifying user.xml

Hello,
I have a two part question.
i. I am trying to add a UDF (using Advanced>User Configuration..Attributes) to a fully configured OIM i.e. oim with reconciliation and provisioning from and to resources but it throws a null pointer exception. Look at the log, I see
===============Excerpt form the log file==========
[2012-01-26T11:28:14.447-05:00] [oim_server1] [NOTIFICATION] [] [oracle.iam.platform.authz.impl] [tid: [ACTIVE].ExecuteThread: '3' for queue: 'weblogic.kernel.Default (self-tuning)'] [userId: xelsysadm] [ecid: 0000JKQq8vZ8dpC5nFk3yZ1Evvpt000LzY,0] [APP: oim#11.1.1.3.0] [dcid: c62f3a4b80d21e6f:ef93519:134587d39c4:-7ffd-0000000000022a3e] [[
---Stack Trace Begins[[This is not an exception. For debugging purposes]]---
oracle.iam.platform.authz.impl.OESAuthzServiceImpl.doCheckAccess(OESAuthzServiceImpl.java:210)
oracle.iam.platform.authz.impl.OESAuthzServiceImpl.hasAccess(OESAuthzServiceImpl.java:188)
oracle.iam.platform.authz.impl.OESAuthzServiceImpl.hasAccess(OESAuthzServiceImpl.java:180)
oracle.iam.platform.authz.impl.AuthorizationServiceImpl.hasAccess(AuthorizationServiceImpl.java:173)
oracle.iam.configservice.impl.ConfigManagerImpl.checkAuthorization(ConfigManagerImpl.java:1899)
oracle.iam.configservice.impl.ConfigManagerImpl.addAttribute(ConfigManagerImpl.java:177)
oracle.iam.configservice.api.ConfigManagerEJB.addAttributex(Unknown Source)
... 21 lines skipped..
oracle.iam.configservice.api.ConfigManager_5u0nrx_ConfigManagerRemoteImpl.addAttributex(ConfigManager_5u0nrx_ConfigManagerRemoteImpl.java:864)
... 13 lines skipped..
oracle.iam.configservice.api.ConfigManagerDelegate.addAttribute(Unknown Source)
oracle.iam.configservice.agentry.config.CreateAttributeActor.perform(CreateAttributeActor.java:266)
oracle.iam.consoles.faces.mvc.canonic.Model.perform(Model.java:547)
oracle.iam.consoles.faces.mvc.admin.Model.perform(Model.java:324)
oracle.iam.consoles.faces.mvc.canonic.Controller.doPerform(Controller.java:255)
oracle.iam.consoles.faces.mvc.canonic.Controller.doSelectAction(Controller.java:178)
oracle.iam.consoles.faces.event.NavigationListener.processAction(NavigationListener.java:97)
... 24 lines skipped..
oracle.iam.platform.auth.web.PwdMgmtNavigationFilter.doFilter(PwdMgmtNavigationFilter.java:115)
... weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
oracle.iam.platform.auth.web.OIMAuthContextFilter.doFilter(OIMAuthContextFilter.java:100)
... 15 lines skipped..
weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
---Stack Tracefor this call Ends---
[2012-01-26T11:28:14.447-05:00] [oim_server1] [NOTIFICATION] [IAM-1010010] [oracle.iam.platform.authz.impl] [tid: [ACTIVE].ExecuteThread: '3' for queue: 'weblogic.kernel.Default (self-tuning)'] [userId: xelsysadm] [ecid: 0000JKQq8vZ8dpC5nFk3yZ1Evvpt000LzY,0] [APP: oim#11.1.1.3.0] [dcid: c62f3a4b80d21e6f:ef93519:134587d39c4:-7ffd-0000000000022a3e] [arg: 1] [arg: null] [arg: USER_MANAGEMENT_CONFIG] [arg: CREATE_ATTRIBUTE] ********** Entering the Authorization Segment with parameters:: LoggedInUserId = 1, target resourceID = null, Feature = USER_MANAGEMENT_CONFIG, Action = CREATE_ATTRIBUTE **********
[2012-01-26T11:28:14.448-05:00] [oim_server1] [NOTIFICATION] [IAM-1010021] [oracle.iam.platform.authz.impl] [tid: [ACTIVE].ExecuteThread: '3' for queue: 'weblogic.kernel.Default (self-tuning)'] [userId: xelsysadm] [ecid: 0000JKQq8vZ8dpC5nFk3yZ1Evvpt000LzY,0] [APP: oim#11.1.1.3.0] [dcid: c62f3a4b80d21e6f:ef93519:134587d39c4:-7ffd-0000000000022a3e] [arg: [InternalObligation: name: noop, values: [true], convertToObligation: false, InternalObligation: name: noop, values: [true], convertToObligation: false]] Validating the Internal Obligations: [InternalObligation: name: noop, values: [true], convertToObligation: false, InternalObligation: name: noop, values: [true], convertToObligation: false]
[2012-01-26T11:28:14.448-05:00] [oim_server1] [NOTIFICATION] [IAM-1010022] [oracle.iam.platform.authz.impl] [tid: [ACTIVE].ExecuteThread: '3' for queue: 'weblogic.kernel.Default (self-tuning)'] [userId: xelsysadm] [ecid: 0000JKQq8vZ8dpC5nFk3yZ1Evvpt000LzY,0] [APP: oim#11.1.1.3.0] [dcid: c62f3a4b80d21e6f:ef93519:134587d39c4:-7ffd-0000000000022a3e] ---------- The list of Internal Obligation is satisfied, returning TRUE ----------
[2012-01-26T11:28:14.448-05:00] [oim_server1] [NOTIFICATION] [IAM-1010026] [oracle.iam.platform.authz.impl] [tid: [ACTIVE].ExecuteThread: '3' for queue: 'weblogic.kernel.Default (self-tuning)'] [userId: xelsysadm] [ecid: 0000JKQq8vZ8dpC5nFk3yZ1Evvpt000LzY,0] [APP: oim#11.1.1.3.0] [dcid: c62f3a4b80d21e6f:ef93519:134587d39c4:-7ffd-0000000000022a3e] [arg: Decision :PERMIT\nObligations from policy: ] ********** Exiting the Authorization Segment with result Decision :PERMIT[[
=============Excerpt ends==============
Is there a reason why this is and how do I get by it.
ii. Can I just add the field directly within the MDS>file/user.xml? Would there be an issue with changing an existing attribute metadata using the user.xml?

Pradeep thank you for your response. it was helpful. However, I also found the responses to both my questions.
i. The null pointer exception was due to using a complex query I was using in the LOV query. I tried a simple query and that worked fine.
ii. For modifying the user defined attributes one can consult the following forum post:
OIM 11g - Change UDF Field Type form String to LOV
Thanks

Difference between Error and Exception

Can anyone tell me the difference between error and exception
Thanz

Errors and Exceptions, in a Nutshell
Errors and exceptions both inherit from Throwable, but they differ in these ways:
Exceptions
Can be checked or unchecked
Indicate an error caused by the programmer
Should be handled at the application level
Errors
Are always unchecked
Usually indicate a system error or a problem with a low-level resource
Should be handled at the system level, if possible
pretty much exceptions cause abnormal flow of the program, errors stop it, least thats my idea, it can get pretty complicated, below is a really good link for htat, also, Google it.
http://www.fawcette.com/javapro/2002_09/online/errors_jstreet_09_13_02/
really good site
-brian

Difference in throwing and catching an exception?

Similar Messages

Maybe you are looking for