Answer to Question #300085 in Java | JSP | JSF for koi

Question

Instructions

∙ Name your Java package as: “com.lastname.duka”.

∙ Name your database using your names as: “db_first_last_studentNumber”. ∙ Name all your tables in your database using this format: “tbl_tableName”. ∙ Add a copyright message (tiny text) on all your GUIs. 

Milestone:

For this unit, you are required to develop a GUI application using Java. The application should connect to a database and should be able to perform any CRUD operation.

Main goal: 

Develop a Java application with GUI for a primary school called Duka.

Functional Requirements:

The application should allow: 

i. A shop attendant to be able to login to upload stock of items (with prices). ii. A buyer be able to search for items, get their prices and make an order.

Non-functional Requirements:

The application should:

i. Have a user-friendly GUI for both shop attendant and buyer.

ii. Not crash in case a user makes a mistake, instead it should provide a clarification/warning.

Answer 1

import javax.swing.*;
import javax.swing.table.DefaultTableModel;
import java.awt.*;

public class Main {

    public static final String LOGIN = "admin";
    public static final String PASSWORD = "admin";

    public static void createAdministrationFrame(JFrame owner) {
        JDialog adminFrame = new JDialog(owner);
        adminFrame.setName("Admin");

        DefaultTableModel tableModel = new DefaultTableModel();
        JTable table = new JTable(tableModel);
        JScrollPane scrollPane = new JScrollPane(table);
        scrollPane.setMaximumSize(new Dimension(200,400));

        JButton addButton = new JButton("Add");
        JButton updateButton = new JButton("Update");
        JButton deleteButton = new JButton("Delete");

        JPanel buttonsPanel = new JPanel();
        BoxLayout buttonsLayout = new BoxLayout(buttonsPanel, BoxLayout.X_AXIS);
        buttonsPanel.setLayout(buttonsLayout);
        buttonsPanel.add(addButton);
        buttonsPanel.add(Box.createRigidArea(new Dimension(10, 0)));
        buttonsPanel.add(updateButton);
        buttonsPanel.add(Box.createRigidArea(new Dimension(10, 0)));
        buttonsPanel.add(deleteButton);

        JLabel idLabel = new JLabel("ID");
        idLabel.setAlignmentY(Component.CENTER_ALIGNMENT);
        idLabel.setAlignmentX(Component.CENTER_ALIGNMENT);

        JTextField idTextField = new JTextField();
        idTextField.setAlignmentY(Component.CENTER_ALIGNMENT);
        idTextField.setMaximumSize(new Dimension(120, 20));

        JPanel idPanel = new JPanel();
        BoxLayout idLayout = new BoxLayout(idPanel, BoxLayout.Y_AXIS);
        idPanel.setLayout(idLayout);
        idPanel.add(idLabel);
        idPanel.add(idTextField);

        JLabel nameLabel = new JLabel("Name");
        nameLabel.setAlignmentY(Component.CENTER_ALIGNMENT);
        nameLabel.setAlignmentX(Component.CENTER_ALIGNMENT);

        JTextField nameTextField = new JTextField();
        nameTextField.setAlignmentY(Component.CENTER_ALIGNMENT);
        nameTextField.setMaximumSize(new Dimension(120, 20));

        JPanel namePanel = new JPanel();
        BoxLayout nameLayout = new BoxLayout(namePanel, BoxLayout.Y_AXIS);
        namePanel.setLayout(nameLayout);
        namePanel.add(nameLabel);
        namePanel.add(nameTextField);

        JLabel priceLabel = new JLabel("Price");
        priceLabel.setAlignmentY(Component.CENTER_ALIGNMENT);
        priceLabel.setAlignmentX(Component.CENTER_ALIGNMENT);

        JTextField priceTextField = new JTextField();
        priceTextField.setAlignmentY(Component.CENTER_ALIGNMENT);
        priceTextField.setMaximumSize(new Dimension(120, 20));

        JPanel pricePanel = new JPanel();
        BoxLayout priceLayout = new BoxLayout(pricePanel, BoxLayout.Y_AXIS);
        pricePanel.setLayout(priceLayout);
        pricePanel.add(priceLabel);
        pricePanel.add(priceTextField);

        JPanel inputPanel = new JPanel();
        BoxLayout inputLayout = new BoxLayout(inputPanel, BoxLayout.X_AXIS);
        inputPanel.setLayout(inputLayout);

        //inputPanel.add(Box.createHorizontalGlue());
        inputPanel.add(idPanel);
        inputPanel.add(Box.createRigidArea(new Dimension(10, 0)));
        inputPanel.add(namePanel);
        inputPanel.add(Box.createRigidArea(new Dimension(10, 0)));
        inputPanel.add(pricePanel);
        //inputPanel.add(Box.createHorizontalGlue());


        JPanel mainPanel = new JPanel();
        BoxLayout mainLayout = new BoxLayout(mainPanel, BoxLayout.Y_AXIS);
        mainPanel.setLayout(mainLayout);
        mainPanel.add(Box.createVerticalGlue());
        mainPanel.add(scrollPane);
        mainPanel.add(Box.createRigidArea(new Dimension(0,10)));
        mainPanel.add(inputPanel);
        mainPanel.add(Box.createRigidArea(new Dimension(0,10)));
        mainPanel.add(buttonsPanel);
        mainPanel.add(Box.createVerticalGlue());


        adminFrame.add(mainPanel);
        adminFrame.setSize(450, 650);
        adminFrame.setModal(true);
        adminFrame.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
        adminFrame.setVisible(true);
    }

    public static void createBuyerFrame() {
        JDialog buyerFrame = new JDialog();
        JLabel buyer = new JLabel("Buyer");
        JPanel panel = new JPanel();
        panel.add(buyer);
        buyerFrame.add(panel);
        buyerFrame.setSize(200, 200);
        buyerFrame.setModal(true);
        buyerFrame.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
        buyerFrame.setVisible(true);
    }

    public static void main(String[] args) {
        JFrame mainFrame = new JFrame("Duka");

        JLabel loginLabel = new JLabel("Login");
        loginLabel.setAlignmentY(Component.CENTER_ALIGNMENT);
        loginLabel.setAlignmentX(Component.CENTER_ALIGNMENT);

        JTextField loginTextField = new JTextField();
        loginTextField.setAlignmentY(Component.CENTER_ALIGNMENT);
        loginTextField.setMaximumSize(new Dimension(120, 20));

        JLabel passwordLabel = new JLabel("Password");
        passwordLabel.setAlignmentY(Component.CENTER_ALIGNMENT);
        passwordLabel.setAlignmentX(Component.CENTER_ALIGNMENT);

        JTextField passwordTextField = new JTextField();
        passwordTextField.setAlignmentY(Component.CENTER_ALIGNMENT);
        passwordTextField.setMaximumSize(new Dimension(120, 20));

        JButton loginButton = new JButton("Login");
        loginButton.addActionListener(e -> {
            if (loginTextField.getText().equals(LOGIN) && passwordTextField.getText().equals(PASSWORD)) {
                loginTextField.setText("");
                passwordTextField.setText("");
                createAdministrationFrame(mainFrame);
            }
        });

        JButton buyButton = new JButton("Buy");
        buyButton.addActionListener(e -> {

        });

        JPanel panel = new JPanel();
        BoxLayout mainLayout = new BoxLayout(panel, BoxLayout.Y_AXIS);
        JPanel buttonsPanel = new JPanel();
        BoxLayout buttonsLayout = new BoxLayout(buttonsPanel, BoxLayout.X_AXIS);
        buttonsPanel.setLayout(buttonsLayout);
        buttonsPanel.add(loginButton);
        buttonsPanel.add(Box.createRigidArea(new Dimension(10, 0)));
        buttonsPanel.add(buyButton);

        panel.setLayout(mainLayout);
        panel.add(Box.createVerticalGlue());
        panel.add(loginLabel);
        panel.add(Box.createRigidArea(new Dimension(0, 10)));
        panel.add(loginTextField);
        panel.add(Box.createRigidArea(new Dimension(0, 10)));
        panel.add(passwordLabel);
        panel.add(Box.createRigidArea(new Dimension(0, 10)));
        panel.add(passwordTextField);
        panel.add(Box.createRigidArea(new Dimension(0, 10)));
        panel.add(buttonsPanel);
        panel.add(Box.createVerticalGlue());
        mainFrame.add(panel);
        mainFrame.setSize(250, 350);
        mainFrame.setVisible(true);
        mainFrame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }
}