keep only alphabet characters

Question

What method should I follow in java to produce

\"WordWord\"

from

\"Word#$#$% Word 1234\"

Answer 1

public static void main(String[] args) {
    String input = "Word#$#$% Word 1234";
    String extract = input.replaceAll("[^a-zA-Z]+", "");
    System.out.println(extract);
}

output:

WordWord