How to write a specification in the constructor Java?

Question

Enum values in color are written in capital letters (BLACK, WHITE). It’s necessary to make a refinement to the class, so that in the console turn out “whitE”, “black”

Answer 1

// I hope this link helps you

https://code.sololearn.com/ctzBXfgRTAZU

String w = Color.WHITE.name();
System.out.println(
w.toLowerCase().substring(0,w.length()-1) +
w.substring(w.length()-1, w.length()) );

String b = Color.BLACK.name();
System.out.println(b.toLowerCase());