How do I check if a string is a valid md5 or sha1 checksum string

Question

I don\'t want to calculate a file\'s checksum, just to know if a given string is a valid checksum

Answer 1

MD5 verifier:

public boolean isValidMD5(String s) {
return s.matches("[a-fA-F0-9]{32}");}

And remove "-" of the string value.