Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.util.NavigableSet;
import java.util.TreeSet;

public class Main {
    public static void main(String[] args) {
        String[] cities = { "A", "B", "C", "D", "E", "F" };
        NavigableSet<String> citiesSet = new TreeSet<String>();
        for (String city : cities)
            citiesSet.add(city);
        System.out.println(citiesSet.ceiling("A"));
    }
}