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Use of Checked and Unchecked Exception

Naty wills

Joined: Sep 20, 2005
Posts: 15
I have a query regarding Exceptions in Java, as there are 2 types of exceptions in Java - Checked and Unchecked exceptions, but in other languages viz C++ there is only Unchecked exception. Can someone help me whats the advantage in using Checked and Unchecked exceptions. Why not there is not only Checked exceptions or Unchecked exceptions in Java? Why java supports both Checked and Unchecked exceptions?

Rahul Bhattacharjee
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Joined: Nov 29, 2005
Posts: 2308
I think as java has the concept of checked exceptions , it gives the developers more flexibility.

In case of checked exceptions , the flow gets a chance to retry some action and make the program continue further.

Rahul Bhattacharjee
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Raghavan Muthu
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Joined: Apr 20, 2006
Posts: 3381

Yes instead of leaving the decision to only the runtime environment, developer is also given a choice of how to and what to do further in case of any exception!

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Paul Sturrock

Joined: Apr 14, 2004
Posts: 10336

Not really an advanced question. Moving...

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Stan James
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Joined: Jan 29, 2003
Posts: 8791
Checked exceptions give the compiler the chance to, well, check to see if they're being handled. The folks who invented Java thought this would requiere developers to acknowledge exceptions and help avoid surprising errors at run time. Many Java users appreciate the compile time help, but some resent the extra coding required to catch or declare throwing checked exceptions.

Bruce Eckel's Thinking In Java (free online) has a good chapter on exceptions that mentions the question whether checked exceptions are good or not.

A good question is never answered. It is not a bolt to be tightened into place but a seed to be planted and to bear more seed toward the hope of greening the landscape of the idea. John Ciardi
Naty wills

Joined: Sep 20, 2005
Posts: 15
Thanks all of you :-)

I agree. Here's the link:
subject: Use of Checked and Unchecked Exception
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