在Java regex.Pattern中设置两个标志

Question

I need a matcher like this:

Matcher kuchen = Pattern.compile("gibt es Kuchen in der K\u00FCche",Pattern.CASE_INSENSITIVE).matcher("");

and the problem is that it is not simple ASCII. I know that in this particular case I could use [\ü\Ü] for the ü, but I need to be a bit more general (building the regex from other matcher groups). So according to javadocs :

By default, case-insensitive matching assumes that only characters in the US-ASCII charset are being matched. Unicode-aware case-insensitive matching can be enabled by specifying the UNICODE_CASE flag in conjunction with this flag.

Can anybody tell me how to specify the two flags in conjunction?

Answer 1

Try

Pattern.CASE_INSENSITIVE | Pattern.UNICODE_CASE

it should solve the issue. Or-ing the bitmask you will get compound features.

Answer 2

Though more pure using parameters, same as "(?iu)gibt es ..." without parameters. i = case-insensitive, u = unicode.

Answer 3

Use bitwise OR, like Pattern.CASE_INSENSITIVE | Pattern.UNICODE_CASE Pattern.CASE_INSENSITIVE | Pattern.UNICODE_CASE .

Answer 4

It's a bitmask, so you use the bitwise OR operator | .