Generate random string using given regex in Java

For my selenium automation I want to generate strings as per below regex. Is there any way I can generate random strings when i pass any regex from below list

[A-Z]{2}s*[0-9a-zA-Z]{9}[0-9]

b[a-zA-Z0-9]{6}[0-9] (?![0-9a-zA-Z-])

[0-9A-Z]{8}[0-9]