How can i get know that my String contains diacrit

问题:

For Example -

text = Československá obchodní banka;

text string contains diacritics like Č , á etc.

I want to write a function where i will pass this string "Československá obchodní banka" and function will return true if string contains diacritics else false.

I have to handle diacritics and string which contains character which doesn't fall in A-z or a-z range separately.

1) If String contains diacritics then I have to do some XXXXXX on it.

2) If String contains character other than A-Z or a-z and not contains diacritics  then do some other operations YYYYY.

I have no idea how to do it.

回答1:

One piece of knowledge: in Unicode there exists a code for á but the same result one may get with an a and a combining mark-'.

You can use java.text.Normalizer, as follows:

public static boolean hasDiacritics(String s) {
    // Decompose any á into a and combining-'.
    String s2 = Normalizer.normalize(s, Normalizer.Form.NFD);
    return s2.matches("(?s).*\\p{InCombiningDiacriticalMarks}.*");
    //return !s2.equals(s);
}

回答2:

The Normalizer class seems to be able to accomplish this. Some limited testing indicate that

Normalizer.isNormalized(text, Normalizer.Form.NFD)

might be what you need.