robe-common/src/main/java/io/robe/common/utils/Strings.java
public static final String unCapitalizeFirstChar(String word) {
        return Character.toLowerCase(word.charAt(0)) + word.substring(1);
    }
public static final String unCapitalizeFirstChar(String word) {
        return Character.toLowerCase(word.charAt(0)) + word.substring(1);
    }
Un capitalizes the first character of the word given.
It will convert i to I

@param word
@return result