How to Convert Unicode Symbols and Accent Letters to the English Alphabet in Java?

Converting Symbols and Accent Letters to the English Alphabet in Java

Problem Statement

Unicode encompasses a vast repertoire of characters, many of which are similar to letters within the English alphabet. The challenge lies in converting all these similar characters to their English counterparts. For example:

• ҥ converts to H
• Ѷ converts to V
• Ȳ converts to Y
• Ǭ converts to O

Unicode versions of letters like A/a pose a further classification difficulty.

Java Solution

To address this conversion challenge, we can leverage the following approach in Java:

• Employ the Normalizer class to normalize the string into Normalization Form D (NFD). This expands accented characters into base characters and combining diacritics.
• Utilize a regular expression to identify and remove the combining diacritics using the following code:

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

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

This code first normalizes the string using NFD and then employs a regex to strip off the diacritical marks, resulting in the removal of accent symbols and the conversion of the characters to their English alphabet equivalents.

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