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NNTP-Posting-Date: Wed, 03 Apr 2013 05:15:49 -0500
Date: Wed, 03 Apr 2013 11:15:47 +0100
From: lipska the kat <"nospam at neversurrender dot co dot uk">
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Subject: Re: Usefulness of "final" (Was: Re: Inserting In a List)
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On 02/04/13 20:06, Robert Klemme wrote:
> On 04/02/2013 04:08 PM, lipska the kat wrote:
>
>> Just as a matter of interest what's with all the finals
>>
>> particularly
>>
>> for (final File name : folder.listFiles())

[snip]

> I believe in using "final" pretty often as it will immediately indicate
> which local variables are constant for a method call and which are
> modified all the time.  Plus, with "final" you can easier catch errors
> in control flow:
>
> final String x;
>
> if ( someCondition() ) {
>    x = y.toString();
> }
> else {
>    if ( someOtherCondition() ) {
>      x = "foo";
>    }
>    // forgot the else branch here
>    x = "bar";
> }
>
> System.out.println("We got " + x);
>
> Generally I find "finally" quite useful - apparently significantly more
> useful than you do. :-)

Well I'm not sure that using a storage class to help you write a 
conditional statement is 'good programming style' but hey ho, different 
strokes for different folks :-)

I know you mean final of course.
finally is the last recourse of the desperate :-)

Anyway, the usability of final depends on your point of view I suppose.

If for some reason I find myself using 'final' all over the place then I 
would have to ask myself if my abstraction was coherent. If one has 
something, or in fact a number of somethings that need 'protecting' in 
this way then surely it is better to wrap them up in a component and 
control access by virtue of the public interface of that component.

It's more OO, makes for cleaner code and of course provides opportunity 
for the holy grail of OO 're-usability'

lipska

-- 
Lipska the KatŠ: Troll hunter, sandbox destroyer
and farscape dreamer of Aeryn Sun