Regular expression include and exclude special characters

Question

I\'m finding a regular expression which adheres below rules.

Allowed Characters

Alphabet : a-z / A-Z
Numbers : 0-9
Special Characters : ~ @ # $ ^ &

Answer 1

You haven't actually asked a question, but assuming you have one, this could be your answer...

Assuming all characters, except the "Special Characters" are allowed you can write

String regex = "^[^<>'\"/;`%]*$";