Question

how to extract the capital letter out of words using java?

example:
enter your words:Hello I Am Heyman
output:HIAH

thank

Answer 1

You can try replaceAll

String text2 = text.replaceAll("[^A-Z]", "");

As @Vic comments, to include all English/Non-English Capital letters.

String text2 = text.replaceAll("[^\p{Lu}]", "");