public class Solution {
    public String capitalizeFirstLetter(String text) {

        if("".equals(text)) {
            return "";
        }

        StringBuilder sb = new StringBuilder();

        for(int i = 0; i < text.length(); i++) {
            char c = text.charAt(i);

            if(i == 0) {
                sb.append(Character.toUpperCase(c));
            } else {
                sb.append(c);
            }
        }

        return sb.toString();
    }
}