In Java, how to find if first character in a string is upper case without regex

Question

In Java, find if the first character in a string is upper case without using regular expressions.

Answer 1

Assuming s is non-empty:

Character.isUpperCase(s.charAt(0))

or, as mentioned by divec, to make it work for characters with code points above U+FFFF:

Character.isUpperCase(s.codePointAt(0));