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Shall I Write Try-Catch In Finally Block.. Is It Possible?

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shall i write try-catch in finally block.. is it possible??????????

Posted 15-Mar-15 20:23pm

NagaNimesh 11474558

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[no name] 16-Mar-15 2:28am

What you have tried?

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Solution 2

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Syntactically it is possible - however a try-catch block is very expensive so you should not use it except there is no other way to catch malfunctioning...The results of this survey[^] may give you ideas where to use and where not...
To be more specific you must share the exact case you intend to use nested try-catch blocks...

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Posted 15-Mar-15 20:34pm

Kornfeld Eliyahu Peter

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[no name] 16-Mar-15 2:42am

If you asked me for an in-depth explanation I would have to cite some blogs etc. but all that I've read says try-catch-blocks themself are *cheap* (at least in the current implementation of .Net). It just becomes expensive if an exception is actually being thrown because the stacktrace needs to be unwound.
- Sebastian

Kornfeld Eliyahu Peter 16-Mar-15 2:55am

Which means that it is expensive to catch for instance wrong user input! If you do so you actually USE try-catch to check if the input is valid where you can do that with some if structure...
Any peace of code is 'cheap' if you do not run it...

[no name] 16-Mar-15 3:04am

Peter, I took your answer literally. You said a try-catch-block is expensive. That's not correct to my knowledge. You didn't take my answer literally, you implied the inquirer (or I?) would abuse exceptions for validation, which isn't stated anywhere. :-)
- Sebastian

Kornfeld Eliyahu Peter 16-Mar-15 3:09am

I didn't mean to abuse or took any... :-)
All I say that to say try-catch is cheap is only true if you actually use none! An use none is means that you never hit the catch...But if you now you never hit the catch, why to use it in the first place? And if you have any chance to hit it than you WILL hit it - so it is expensive...
It of course a play around philosophy, but what I'm trying to say, that do not use try-catch without reasoning it very well...

[no name] 16-Mar-15 3:33am

I would like to change that to: Try-catch and even nested try-catch are cheap if exceptions are exceptional. If they *are* exceptional and you do hit the catch-block then it doesn't matter that this one exception is expensive because something went so wrong that user interaction or -notification is probably required and users are slow :-)

Kornfeld Eliyahu Peter 16-Mar-15 3:36am

I would still add - do not use try-catch, even if "exceptions are exceptional" to catch exception that can be avoided in any other way - use it as last option...

[no name] 16-Mar-15 3:39am

We can settle on that :-)

Kornfeld Eliyahu Peter 16-Mar-15 3:42am

Agreed...
(OT: It was nice to chat with you after I got pissed off on an other member...It calmed me down a bit, thank you!)

[no name] 16-Mar-15 3:43am

You're welcome ;-)

Praveen Kumar Upadhyay 16-Mar-15 4:36am

Where do we can discuss this kind of open questions/debate??
I liked the way you guys were debating. It gives an end output at the end. I would love to debate on some point.

Kornfeld Eliyahu Peter 16-Mar-15 4:38am

IMHO, the programming forums can be good place for such debate - better than QA...

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Solution 1

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Yes, it's possible. Whether you actually should do it I can't tell because I don't know what you're trying to accomplish.

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Posted 15-Mar-15 20:27pm

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Solution 3

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There is more good advice here:
http://stackoverflow.com/questions/4799758/are-nested-try-catch-blocks-a-bad-idea[^]

Refactoring may be an option.

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Posted 15-Mar-15 20:40pm

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NagaNimesh 11474558 16-Mar-15 3:25am

tanq so much to everyone ..
sorry i did'nt ask the ques clearly..
my task is to place a try catch in finally block..which mean that there should be only one finally block in a method ???? or shall i place n number of finally blocks in a nested finally block???? but i got some clarity by your suggestions...tanq to all

[no name] 16-Mar-15 3:41am

No offense, please, but I think you really should read up on the basics.

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