Question

Is it correct to catch each exception with Exception class ??? If not then what should be the correct sequence to catch exception within try catch block?

e.g

try{
       .
       .
       some code
       .
   }
   catch(Exception ex)
   {
       throw ex;
   }

Answer 1

No, this is wrong.

1. Catching only to throw again is pointless.

2. It’s rethrowing incorrectly, which leads to losing the stack trace. The right way to rethrow (when rethrowing makes sense, that is), is simply: throw;

3. If you want to catch one exception and then throw another, you should keep the first one as an inner exception of the second. This is done by passing it in to the constructor.

Bottom line: Only catch the exceptions that you know what to do with.