1 . If trywithresources and finalize() aren't related -meaning trywithresources doesn't call finalize()- what is the purpose of adding the extra code in this exercise? 2. Furthmore, in my code I left the code where the connection is closed. In the mentor code, they took out this code. I am using that they took it out because the connection element is being closed in the finalize method? 3. Is there a problem if I write the logic to close the connection before calling the super.finalize() ? My code: 
public class Solution {
    private Connection connection;


    @Override
    protected void finalize() throws Throwable{
        if (connection != null) connection.close();
        super.finalize();
    }

    public Solution(Connection connection) {
        this.connection = connection;
    }

    public List<User> getUsers() throws Exception {
        String query = "select ID, DISPLAYED_NAME, LEVEL, LESSON from USER";

        List<User> result = new LinkedList();

        try ( Statement stmt = connection.createStatement(); ResultSet rs = stmt.executeQuery(query) ){

            while (rs.next())
            {
                int id = rs.getInt("ID");
                String name = rs.getString("DISPLAYED_NAME");
                int level = rs.getInt("LEVEL");
                int lesson = rs.getInt("LESSON");

                result.add(new User(id, name, level, lesson));
            }

            if(stmt != null) stmt.close();

            if(rs != null) rs.close();
        }

        return result;
    }
Mentor code: 
public class Solution {
    private Connection connection;

    public Solution(Connection connection) {
        this.connection = connection;
    }

    public List<User> getUsers() {
        String query = "select ID, DISPLAYED_NAME, LEVEL, LESSON from USER";

        List<User> result = new LinkedList();
        try (Statement stmt = connection.createStatement();
             ResultSet rs = stmt.executeQuery(query);
             ) {

            while (rs.next()) {
                int id = rs.getInt("ID");
                String name = rs.getString("DISPLAYED_NAME");
                int level = rs.getInt("LEVEL");
                int lesson = rs.getInt("LESSON");

                result.add(new User(id, name, level, lesson));
            }
        } catch (SQLException e) {
            e.printStackTrace();
            result = null;
        }
        return result;
    }