exception-handling

How to enable exception handling in objective-c and xcode

Hello, EDIT: Issue has been solved(partially):It is a simulator bug. I've compiled and tested this on two devices with iOS 3.1.3 and 4.0. The exception was handled correctly. Be careful, the simulator is your enemy! this is driving me crazy. I don't know how to enable exception handling in my project. Look at the code and debugger outp...

What is the gist of finally block in Java?

I think on the following examples; but could not figure out what the importance of the finally block is. Can you tell me the difference of the executions of these two code samples? Also a real life example can be helpful. Sample 1: try{ // some code 1 }catch(Exception ex){ // print exception }finally{ ...

When so many things can go wrong all you do is try, try, try

Seriously, how can you handle all those exceptions without going nuts? Have I read one too many articles on exception handling or what? I tried refactoring this a couple of times and each time I seem to end up with something even worse. Maybe I should admit exceptions do happen and simply enjoy coding just the happy path? ;) So what's wr...

Where and how to handle rails exceptions?

I am currently involved in the development of a large rails application that interfaces with another product via a custom API gem. This has led to a very strange sort of error catching. For instance, when we interact with the other product, it might return an authentication error, which we expect. We then catch that error in our API g...

Interview Question - How to handle SOAP Based and REST based Exceptions

Can some one provide a very specific and to the point answer for this question ? ...

How resilient should my web app be?

Lately, I've found myself in quite a few arguments with my boss about the handling of exceptions within our web app (a c# asp.net MVC application). Basically the conversations go something like this: Boss: "There is something wrong with our program, client x's database went down today and everyone is seeing the error page." Me: "Mostl...

Global Exception Handling in Google App Engine

Instead of encapsulating my entire code in a try{} except{} block, is there someway of catching exceptions globally? Basically I am looking for a way to have a global exception handler which will handle all unhandled exceptions in the my python application written for google app engine ...

Exception handling best practice in a windows service?

I am currently writing a windows service that runs entirely in the background and does something every day. My idea is that the service should be very stable so if something goes wrong it should not stop but try it next day again and of course log the exception. Can you suggest me any best practice how to make truly stable windows servic...

Resume program execution after handling an unhandled exception

Question: I catch generally unhandled exceptions with AddHandler System.AppDomain.CurrentDomain.UnhandledException, AddressOf OnUnhandledException The problem now is, with this exception handler Public Sub OnUnhandledException(ByVal sender As Object, ByVal e As UnhandledExceptionEventArgs) Console.WriteLine(e.ExceptionObject.ToStri...

Pre written Exception Handler for ASP.Net

I'm looking for a Exception Handler for asp.net that does email notification including things like the values of form fields, session variables etc. I have one that does it currently written by someone in house but it's not maintained and occasionally there are bugs in it causing give me only partial exception messages. I tried googlin...

Catching somebody else's exception.

We have a third party java code which is throwing a headless exception. Can we catch it in our code? The problem is how do we know which all third party code (which comes in a jar file) will throw the exception. We do not have the third party API docs. ...

Rethrowing specific exceptions to UI layer and Too Much Information principle

If you are rethrowing an exception to the UI layer (so the user will see it) is it always wise to rethrow a specific exception (Eg argumentnullexception)? The problem I've seen with this is that it is too much technical information to he user. All I need to know is the problem and the cause, hiding any details and not even mention the w...

Runtime/Checked/Unchecked/Error/Exception

Hi, What are the Runtime exceptions and what are Checked/Unchecked Exceptions and difference between Error/Exception.Why these many types? Instead Java may simply follow a simple design(just try/catch all types) to handle an abnormal condition in a program? ...

Can't catch atan2 domain error

I am using a thirdparty library eg. Lib::ValueType value. I then do a call to a member function, value.theta() which performs some mathematical operations including a call to atan2 from <cmath>. Sometimes the theta component is empty and an "atan2: domain error" is thrown. However, I can't catch the exception even by wrapping try{}catch(...

Is particular type exception catching faster than general type exception catching?If faster which ratio?

I want to know particular exception like NullPointerException ex is faster than Exception ex. For example my code throws NullPointerException try { ... } catch (NullPointerException e) { ... } or try { ... } catch (Exception e) { ... } Which one is faster? I think exception system depends on flags so particular type i...

Help with Exception handling

hi, i have this application structure: 1. Presentation Layer which calls 2. Business Logic Layer which in turn calls 3. Data Access Layer to do the dealing with the database. Now i have a Contacts page from where i can add a new contact to the database. So to add a New Contact i fill in all the required details and then call a Add Me...

About exception handling in .NET

Suppose there is a .NET application that uses lots of system events and framework methods. I find it hard to manually read the documentation of each event and method to see if they throw exceptions. Is there a VS tool or a third-party application that runs through source code and indicates which events, methods, etc. are not exception ha...

CountDownLatch InterruptedException

I am using the CountDownLatch to synchronize an initialization process between two threads and i was wondering about the proper handling of the InterruptedException that it might throw. the code i initially wrote was this: private CountDownLatch initWaitHandle = new CountDownLatch(1); /** * This method will block until the...

Using global exception handling with "setUncaughtExceptionHandler" and "Toast"

Hi everyone, I am trying to create a simple exception handler which will help me debug the application. Right now, when I have an exception I am forced to connect with Eclipse debugger merely to see the exception details. To avoid that I've used setUncaughtExceptionHandler to handle any unhandled exception and display a Toast on the ex...

Java exception handling method

Hi, I'm having a little bit of trouble implementing the following method while handling the 3 exceptions I'm supposed to take care of. Should I include the try/catch blocks like I'm doing or is that to be left for the application instead of the class design? Uml diagram of the program: http://yfrog.com/9htuoj The method says I'm suppo...