Convert to Title Case in Java

1import java.util.Scanner;
2
3public class Main {
4    public static void main(String[] args) {
5        Scanner sc = new Scanner(System.in);
6        System.out.print("Enter a sentence: ");
7        String s = sc.nextLine().toLowerCase();
8
9        String[] words = s.trim().split("\\s+");
10        StringBuilder sb = new StringBuilder();
11        for (String w : words) {
12            if (w.isEmpty()) continue;
13            sb.append(Character.toUpperCase(w.charAt(0)))
14              .append(w.substring(1))
15              .append(" ");
16        }
17        System.out.println("Title case: " + sb.toString().trim());
18        sc.close();
19    }
20}