Shallow clone of object with mutable collection

import java.util.ArrayList;
import java.util.List;

class UserProfile implements Cloneable {
    List<String> tags = new ArrayList<>();
    
    // Default clone performs shallow copy of tags list reference
    @Override
    public UserProfile clone() {
        try {
            return (UserProfile) super.clone();
        } catch (CloneNotSupportedException e) {
            throw new RuntimeException(e);
        }
    }
}

public class Main {
    public static List<String> cloneAndMutateTags(String newTag) {
        UserProfile p1 = new UserProfile();
        p1.tags.add("free");
        UserProfile p2 = p1.clone();
        p2.tags.add(newTag); // Mutates shared ArrayList
        return List.of(p1.tags.get(0), p2.tags.get(1));
    }

    public static void main(String[] args) {
        System.out.println(cloneAndMutateTags("pro"));
    }
}