GUI.java

package icecream;

import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.SwingConstants;
import javax.swing.SwingUtilities;

public class GUI implements ActionListener {
    JFrame menu = new JFrame("Ice Cream Parlor");
    JFrame orders = new JFrame("Orders");
    JFrame orderEntry = new JFrame("Order Entry");
    JTextField fname = new JTextField();
    JTextField lname = new JTextField();
    Connection con = null;
    Statement st = null;
    Database db = null;

    public GUI() throws SQLException {
        con = DBConnectionManager.getInstance().getConnection();

        db = new Database(con);

        try
        {
            db.makeTables();
        } catch( SQLException e)
        {
            System.err.println("ERROR: COULD NOT INITIALIZE TABLES [" + e.getMessage() + "]");
        }

        menu.setLayout(new GridLayout(2, 1, 10, 10));
        menu.setBounds(100, 100, 500, 500);
        JButton b1 = new JButton("See Orders");
        b1.addActionListener(this);
        b1.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
        JButton b2 = new JButton("Enter Order");
        b2.addActionListener(this);
        menu.add(b1);
        menu.add(b2);
        menu.setVisible(true);
        menu.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        //orderEntry.getContentPane().removeAll();
        orderEntry.setLayout(new GridLayout(3,3));
        orderEntry.setBounds(100, 100, 600, 600);
        orderEntry.add(fname);
        orderEntry.add(lname);
        JComboBox flavors = new JComboBox(new String[]{"Vanilla"});
        orderEntry.add(flavors);
        JComboBox toppings = new JComboBox(new String[]{"Chocolate Syrup"});
        orderEntry.add(toppings);
        JComboBox container = new JComboBox(new String[]{"Cup", "Cone"});
        orderEntry.add(container);
    }

    public void showOrders() {
        orders.getContentPane().removeAll();
        orders.setLayout(new BorderLayout());
        orders.setBounds(100, 100, 600, 600);
        ResultSet rs;
        int rows = 0;

        String[][] arr = null;

        try {
            arr = db.getorders();
        } catch (SQLException e) {
            orders.add(new JLabel("ERROR: COULD NOT ACCESS ORDERS", SwingConstants.CENTER));
            System.err.println("ERROR: COULD NOT ACCESS ORDERS [" + e.getMessage() + "]");
            return;
        }

        if (arr == null) {
            orders.add(new JLabel("NO ORDERS YET", SwingConstants.CENTER));
        } else {
            JTable table = new JTable(arr, db.cols) {
                @Override
                public boolean isCellEditable(int row, int col) {
                    return false;
                }
            };
            orders.add(new JScrollPane(table), BorderLayout.CENTER);
        }

        orders.setVisible(true);
    }

    public void enterOrder()
    {


        orderEntry.setVisible(true);
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                try {
                    GUI gui = new GUI();
                } catch (SQLException e) {
                    System.out.println("ERROR: COULD NOT ESTABLISH CONNECTION [" + e.getMessage() + "]");
                }
            }
        });
    }

    @Override
    public void actionPerformed(ActionEvent ae) {
        if (ae.getActionCommand().equals("See Orders")) {
            showOrders();
        } else if (ae.getActionCommand().equals("Enter Order")) {
            enterOrder();
        }
    }
}