Remove Duplicate Characters in Java

1import java.util.LinkedHashSet;
2import java.util.Scanner;
3import java.util.Set;
4
5public class Main {
6    public static void main(String[] args) {
7        Scanner sc = new Scanner(System.in);
8        System.out.print("Enter a string: ");
9        String s = sc.nextLine();
10
11        Set<Character> set = new LinkedHashSet<>();
12        for (char c : s.toCharArray()) {
13            set.add(c);
14        }
15
16        StringBuilder sb = new StringBuilder();
17        for (char c : set) {
18            sb.append(c);
19        }
20
21        System.out.println("After removing duplicates: " + sb.toString());
22        sc.close();
23    }
24}