Hmmmm Interesting Dominik.
Thanks for the information.
It's sure is clean, but didn't know that performance of regexp is
"good" in this case..
What I want is: if a character at index X is a white space. That means
I always have to take first a substring of one character and then do a
match. So besides checking for a whitespace, I also take a substring,
does that still perform well ??...
Besides that: I always understood that object creation should be
reduces as much as possible. In this case it always creates more
objects...
Might it be a good idea to store the pattern in a static field, to
overcome unnecessary pattern compilation?
So do something like this:
private final static Pattern PATTERN_WHITE_SPACE = Pattern.compile("\
\S");
..
...
..
In a helper method:
public static boolean matchWhiteSpace(String input) {
return PATTERN_WHITE_SPACE.matcher(input).matches();
}
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