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And if I did create a subclass of the Math class, I sure would like to be able to redefine what Absolute value means. Since subclassing implies you want to modify how the class works, "final" prevents subclassing, not modification as such. Why would you want to prevent that?Michał Tatarynowicz– Michał Tatarynowicz2009-02-08 20:44:21 +00:00Commented Feb 8, 2009 at 20:44
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@Pies - well, with the given example, Absolute value has one meaning and it should not be changed, even if you want it to.MattBelanger– MattBelanger2009-02-08 20:48:47 +00:00Commented Feb 8, 2009 at 20:48
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What you're saying is that "final" means that the particular class makes no sense to extend?Michał Tatarynowicz– Michał Tatarynowicz2009-02-08 20:51:14 +00:00Commented Feb 8, 2009 at 20:51
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Actually, Math is final because it's a static utility class - it has no instance methods or properties. It's common to make such a class final to lock it down.Cornelius Dol– Cornelius Dol2009-02-08 22:04:07 +00:00Commented Feb 8, 2009 at 22:04
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It also enforces using Math.xxx, instead of math=new Math ... math.xxxCornelius Dol– Cornelius Dol2009-02-08 22:04:46 +00:00Commented Feb 8, 2009 at 22:04
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