utility/src/main/java/io/tracee/contextlogger/utility/GetterUtilities.java
static String capitalizeFirstCharOfString(final String input) {
        if (input == null || input.length() == 0) {
            return "";
        }
        else if (input.length() == 1) {
            return input.toUpperCase();
        }
        else {
            return input.substring(0, 1).toUpperCase() + input.substring(1);
        }
    }
static String capitalizeFirstCharOfString(final String input) {
        if (input == null || input.length() == 0) {
            return "";
        }
        else if (input.length() == 1) {
            return input.toUpperCase();
        }
        else {
            return input.substring(0, 1).toUpperCase() + input.substring(1);
        }
    }
Capitalizes first char of an input string.

@param input the string to be processed;
@return The input string with the first capitalized char. Returns empty string, if passed input String is null or empty.