Java change áéőűú to aeouu [duplicate]

Question

Possible Duplicates:
Remove diacritical marks (ń ǹ ň ñ ṅ ņ ṇ ṋ ṉ ̈ ɲ ƞ ᶇ ɳ ȵ) from Unicode chars
Is there a way to get rid of accents and convert a whole string to regular letters?

How can i do this? Thanks for the help

Corfam

duplicate: #1453671 – Anastomosis

See #1453671 – Sanies

the question is closed, ask a new question – Cacology

Answer 1

I think your question is the same as these:

• Java - getting rid of accents and converting them to regular letters
• Converting Java String to ascii

and hence the answer is also the same:

String convertedString = 
       Normalizer
           .normalize(input, Normalizer.Form.NFD)
           .replaceAll("[^\\p{ASCII}]", "");

See

• JavaDoc: Normalizer.normalize(String, Normalizer.Form)
• JavaDoc: Normalizer.Form.NFD
• Sun Java Tutorial: Normalizer's API)

Example Code:

final String input = "Tĥïŝ ĩš â fůňķŷ Šťŕĭńġ";
System.out.println(
    Normalizer
        .normalize(input, Normalizer.Form.NFD)
        .replaceAll("[^\\p{ASCII}]", "")
);

Output:

This is a funky String

Cacology

fortunately I just had to copy and paste it from a previous question (including the first paragraph) :-) – Cacology

Sorry but its in Android, not only java, the normalizer class is not in android systems – Corfam

OK, then maybe you should ask it again in a separate question, this time mentioning that you are talking about android. – Cacology

I think it's worth pointing out that the Normalizer class is part of the Android SDK since API 9. – Unsustainable

Funnily Google seems to prefer the duplicates in search results, always. – Hadley

That´s a great answer, but need java 6 :( – Columbine

@Columbine true, but Java 6 has been around for 10 years, and even Java 7 has been deprecated years ago. Time to upgrade? :-) – Cacology

For the solution proposed, the output for "øóöë" is "ooe", and should be "oooe" – Doggett

@Doggett "ooe" is correct. The way this works is basically turning a letter with a diacritic into 2 code points, i.e ä -> a + ¨ and then removes all non ASCII characters. But Danish (as well as other languages) doesn't have compulsory diacritics, meaning that letters like ø and å aren't e.g a + ° but instead are their own letter and thus own code point, meaning the entire letter is non ASCII and thus gets removed. – Hornet

Answer 2

You can use java.text.Normalizer to separate base letters and diacritics, then remove the latter via a regexp:

public static String stripDiacriticas(String s) {
    return Normalizer.normalize(s, Form.NFD)
        .replaceAll("\\p{InCombiningDiacriticalMarks}+", "");
}

Menstrual

I used something similar that did the job: Pattern.compile("\\p{InCombiningDiacriticalMarks}+").matcher(nfdNormalizedString).replaceAll(""); – Enriqueenriqueta

Answer 3

First - you shouldn't. These symbols carry special phonetic properties which should not be ignored.

The way to convert them is to create a Map that holds each pair:

Map<Character, Character> map = new HashMap<Character, Character>();
map.put('á', 'a');
map.put('é', 'e');
//etc..

and then loop the chars in the string, creating a new string by calling map.get(currentChar)

Tomboy

+1 for you shouldn't – Cacology

another +1 for shouldn't. A replacement for 'ä' in german language would be "ae" (surprise: two chars...) and I bet there a lot more examples for other spoken languages. – Woodworm

@Andreas true, I guess that would call for a locale-specific Normalizer function (good luck with that :-)). – Cacology

There are plenty of reasons why you would to this. e.g. if you wanna store a file on disc but the filename contains these characters. NTFS (as most other FS) wont allow that. – Heptagon

Are you sure? I haven't had problems with special-symbol file names recently – Tomboy

@Tomboy are you sure? Or in other words, have you tried every possible unicode character on all filesystems java supports? I wouldn´t take the risk... – Heptagon

I think I wanted this for sorting a string collection. – Corfam

Another use case (though probably ultimately futile): detecting profanity filter dodging. – Astrix

If you want to put them in a decently looking url then you should. – Doggett

always ignore diacritics in search fields. Users get annoyed when they have to type a special character otherwise they can't find what they want. – Nosography