I can hardly believe it but
split() doesn't work on the
String createDate = '01.2.2013'; String cd = createDate.split('.'); System.assertEquals(3, cd.size()); // Boom!
'\.' but it also doesn't work.
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The separator string used in the split method is a regular expression and "." is a special character in regular expressions.
The regular expression for a literal "." is "\."
However "\" is also used to escape characters when expressing Strings in Apex, and so this character too needs escaping:
String cd = createDate.split('\\.');
The documentation provides an interesting example, if you need to use "\" as the separator:
List<String> parts = filename.split('\\\\');