ArrayLists Main

package edu.missouriwestern.cpozo.csc254.sqlwork;

import java.sql.*;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Scanner;

public class App {
    private static String server = "turing.cs.missouriwestern.edu";
    private static String database = "schedule2";
    private static String user = "csc254";

    public static void main(String[] args) {
        String password;
        String Instructor;
        System.out.println("Please enter the password: ");
        Scanner input = new Scanner(System.in);
        password = input.nextLine();
        //Section[] classes = new Section[100];
        ArrayList<Section> list = new ArrayList<>();
        System.out.println("Which Teacher are you searching for?");
        Scanner teacher = new Scanner(System.in);
        Instructor = teacher.nextLine();

        try {
            String connectionString = String.format("jdbc:mysql://%s/%s?user=%s&password=%s", server, database, user, password);
            Connection conn = DriverManager.getConnection(connectionString);
            String queryString = String.format("SELECT * FROM sections WHERE instructor LIKE '%s'  LIMIT 100", wildCheck(Instructor));

            Statement st = conn.createStatement();
            ResultSet rs = st.executeQuery(queryString);

            while (rs.next()) {
                String discipline = rs.getString("discipline");
                String number = rs.getString("courseNumber");
                String crn = rs.getString("crn");
                String title = rs.getString("title");
                String instructor = rs.getString("Instructor");
                int maxenrollment = rs.getInt("maximumEnrollment");
                int seatsavailable = rs.getInt("seatsAvailable");
                Section course = new Section(crn, discipline, number, title, instructor, maxenrollment, seatsavailable);
                SectionList.add(course);


            }

            //selectionSort(classes, n);
            Collections.sort(list);

            print(list);

        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

    public static String wildCheck(String Instructor) {
        String wildInstructor;
        if (Instructor.contains("%") == false) {
            wildInstructor = Instructor.concat("%");
            return wildInstructor;
        } else
            return Instructor;
    }

    public static <E> void print(ArrayList<E> list) {
        System.out.println(list.size() + " items ----------------------------");
        for (E e : list) {
            System.out.println(e);
        }

/*
    public static void print(Section[] classes, int n) {
        if (classes != null) {
            for (int i = 0; i < n; i++) {
                System.out.println(classes[i]);
            }
        } else
            System.out.println("No Classes found");
    }*/
/*  public static void selectionSort(Section[] classes, int n) {
        for (int i = 0; i < n-1; i++) {
            Section currentMin = classes[i];
            int currentMinIndex = i;

            for (int j = i + 1; j < n; j++) {
                if (currentMin.compareTo(classes[j]) > 0) {
                    currentMin = classes[j];
                    currentMinIndex = j;
                }
            }

            if (currentMinIndex != i) {
                classes[currentMinIndex] = classes[i];
                classes[i] = currentMin;

            }
        }
    }*/
    }
}