Remove Duplicate Characters

import java.util.LinkedHashSet;
import java.util.Scanner;
import java.util.Set;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter a string: ");
        String s = sc.nextLine();

        Set<Character> set = new LinkedHashSet<>();
        for (char c : s.toCharArray()) {
            set.add(c);
        }

        StringBuilder sb = new StringBuilder();
        for (char c : set) {
            sb.append(c);
        }

        System.out.println("After removing duplicates: " + sb.toString());
        sc.close();
    }
}