On 2010-02-17, Antoine Levy Lambert <anto...@gmx.de> wrote:
> I did not even know that he have a utility class called VectorSet.
That's the one introduced to speed up DirectoryScanner without breaking
backwards compatibility. A Vector-subclass (so we could keep the
protected Vector fields) with O(1) contains().
> I did not know that Locale.ENGLISH is supposed to be the default
> locale.
At least it is available everywhere and it does what you'd expect it to
do.
> In which cases does String#toLowerCase() or toUpperCase() behave
> differently depending upon the locale ?
Always.
The canonical example is the letter i and the Turkish locale. In Turkey
there are two "i"s - at least if you look at it with "western" eyes.
One with a dot on top of it and one without, and both come in upper- and
lowercase versions. So an uppercase "i" is "I" with a dot on top of it
and a lowercase "I" an "i" without a dot.
This means in a Turkish locale "FILESET".equalsIgnoreCase("fileset")
returns false - as does "FILESET".toLowerCase().equals("fileset").
Stefan
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