Extract and Print only accent characters through regular expression in JAVA

Question

Been trying to extract only accent characters[a particular word] from a multiple text files in a folder. Don't want to remove or convert accent characters to normal characters but print only those characters which are accent in multiple text files and mixed files which has both accent[words] and normal characters. in JAVA

**only to extract all accent specific words. ** after searching and exploring for a while this a link below is a type of one solution, similar regex but doesn't work as required also select null values and normal characters. Regex accented Characters for special field

another solution found for that is ([a-zA-Z]|[à-ü]|[À-Ü]) it selects each letter separately not feasible as it not word specific and also selects both normal and accent.

• blurfus: Please show your code with what you have tried already in a minimal reproducible example - Also read the How to Ask page for tips on how to improve this questions. Welcome to Stack Overflow - Take the tour (and earn a badge while at it)
• RONNY: Will definitely work on the way to ask question thanking you for pointing it out would read it clearly and update my question
• greg-449: Note that sometimes accented characters are represented using the base character plus a "combining diacritic" so à might be 'a' and U+0300 (combining grave diacritc). You can use java.text.Normalizer to deal with this.

Answer 1

If you want to match word that contains the accent letter you need to go with something like:

[a-zA-Zà-üÀ-Ü]*[à-üÀ-Ü][a-zA-Zà-üÀ-Ü]*

explenation:

• [a-zA-Zà-üÀ-Ü]* - this will match all the accent and not accent letters (so we can have other accent/non-accent letters in our word) - the star * modifier is here to match zero or more letters
• [à-üÀ-Ü] - this will match exactly one accent letter - to force matching only the words with an accent

• RONNY: Thank you so much for answering, it cleared the doubt and thanks for the good explanation