Question

In PHP, I can do:

$str = preg_replace("/(à|á|ạ|ả|ã|â|ầ|ấ|ậ|ẩ|ẫ|ă|ằ|ắ|ặ|ẳ|ẵ)/", 'a', $str);

means that in a string that contains any char like à, á, a, ả, ……will be replace by a.

How can I do the equivalence in Java?

Answer 1

You might want to use a much more generic solution for this problem:

import java.text.Normalizer;
import java.text.Normalizer.Form;

// ...

public static String removeAccents(String text) {
    return text == null ? null
        : Normalizer.normalize(text, Form.NFD)
            .replaceAll("\\p{InCombiningDiacriticalMarks}+", "");
}

This removes all diacritical marks, from any letter, in any script.