public static void signUp() {
        System.out.println("nSign Up For a Classn");
        try {

            System.out.println("Enter Student ID: ");
            user_entered_student_id = sc.nextLine();

            con = DriverManager.getConnection("jdbc:mysql://localhost:3306/ClassSelector?autoReconnect=true&useSSL=false", "root", "!");

            String selectStudentFromIdQuery = ("SELECT student_name FROM ClassSelector.students WHERE student_id = " + user_entered_student_id);
            myStmt = con.prepareStatement(selectStudentFromIdQuery);
            rs = myStmt.executeQuery(selectStudentFromIdQuery);