问如何比较java中的两个字符串，并按字母顺序确定哪个字符串比另一个字符串小？

EN

String s = "yip";
String best = "yodel";
int compare = s.compareToIgnoreCase(best);
if(compare < 0){
    //-1, --> s is less than best. ( s comes alphabetically first)
}
else if(compare > 0 ){
// best comes alphabetically first.
}
else{
    // strings are equal.
}

"abcda".compareTo("abcza")

String bigString = null;

        for(int i = 0; i < number; i++){
            System.out.println("... ");
            String sentence = sc.nextLine();
            if(bigString == null || sentence.compareTo(bigString) > 0) {
                bigString = sentence;
            }
        }
        System.out.println("...: " + bigString);