Can I execute multiple Catch blocks?

Question

This is a bit abstract, but is there any possible way to throw an exception and have it enter multiple catch blocks? For example, if it matches a specific exception followed by a non-specific exception.

catch(Arithmetic exception) {   //do stuff } catch(Exception exception) {   //do stuff } 

Answer 1

It is perfectly acceptable to have multiple catch blocks of differring types. However, the behavior is that the first candidate block handles the exception.

It will not enter BOTH catch blocks. The first catch block that matches the exception type will handle that specific exception, and no others, even if it's rethrown in the handler. Any subsequent ones will be skipped once an exception enters a catch block.

In order to have an exception caught in BOTH blocks, you would need to either nest blocks like so:

try {      try      {         // Do something that throws  ArithmeticException      }      catch(ArithmeticException arithException)      {         // This handles the thrown exception....          throw;  // Rethrow so the outer handler sees it too      } } catch (Exception e) {    // This gets hit as well, now, since the "inner" block rethrew the exception } 

Alternatively, you could filter in a generic exception handler based on the specific type of exception.