How to remove accents and other graphic signals from a Java String?

Question

How to remove accents and other graphic signals from a Java String? Ex.:

String s = "maçã";
String semAcento = ???; // resultado: "maca"

Answer 1

I use to regex along with the class Normalizer. Thus:

public static String removerAcentos(String str) {
    return Normalizer.normalize(str, Normalizer.Form.NFD).replaceAll("[^\\p{ASCII}]", "");
}

Answer 2

If you are Java7+ you can use this solution found in Soen https://stackoverflow.com/a/1215117/1518921

First import this:

import java.text.Normalizer;
import java.util.regex.Pattern;

Then add this to your main class or other class you use:

public static String deAccent(String str) {
    String nfdNormalizedString = Normalizer.normalize(str, Normalizer.Form.NFD); 
    Pattern pattern = Pattern.compile("\\p{InCombiningDiacriticalMarks}+");
    return pattern.matcher(nfdNormalizedString).replaceAll("");
}

And at the time of using would look something like:

System.out.print(deAccent("Olá, mundo!"));

He makes use of the regular expression (regex) to trade them: \p{InCombiningDiacriticalMarks}+

See working on IDEONE: https://ideone.com/MtgLAC