Re: [Gnumed-devel] using exceptions

[Syan Tan]

not sure if python has checked/unchecked exceptions ( probably not).  it's a little difficult understanding why

someone would want to throw an unchecked exception ( e.g. a RuntimeException) , as it sort of makes

client programmers have to revise their code once it gets thrown ( given Murphy's law). 

e.g. for the StackEmpty runtime exception, and the StringTokenizerEmpty runtime exception, the

reason give for making the exceptions unchecked is that the programmer is assumed to understand

to always call hasMoreXXX before calling getNextXXX , but the compiler doesn't check that for  you.

If they were checked exceptions, then a programmer really confident that it wouldn't get thrown,

could put in the exception clause ; "System.err.println(e + ' thrown. Shouldn't happen !'); System.exit(-1);

I suppose with runtime exceptions, there is no setup of an exception harness, so methods that don't

throw exceptions run quicker.

On Sat Dec 31 16:43 , Karsten Hilbert sent:

> Ian,
>
> http://www.javaworld.com/javaworld/jw-07-1998/jw-07-techniques_p.html
>
> Following these guidelines (apart from there no being no
> checked vs unchecked exceptions) plus *not* using the string
> interface but only the class interface on exceptions would
> bode well with me in future code.
>
> We could link the above from the Wiki.
>
> Karsten
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