Shopping Cart Code
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This document defines an Order page class that inherits from the System.Web.UI.Page class. It contains methods for loading product data from a data source and displaying product details based on a selected product. It also contains a method for adding the selected product to the shopping cart when the Add button is clicked, which redirects to the Cart page.
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import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import java.nio.charset.Charset;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.List;
import javax.swing.*;
public class ShoppingList extends JFrame {
private static final long myShoppingList = 1L;
// Constants for window width and height
private final int WINDOW_WIDTH = 700;
private final int WINDOW_HEIGHT = 250;
private JTextField shoppingList;
// Buttons for Save, Add, Remove, and Load features.
private JButton Save;
private JButton Add;
private JButton Remove;
private JButton Load;
// Panels for the button groups
private JPanel textfieldPanel;
private JPanel buttonPanel;
private JComboBox itemList;
/**
* CONSTRUCTOR
*/
public ShoppingList() {
// Window title
setTitle(\"Shopping List\");
// Set size
setSize(WINDOW_WIDTH, WINDOW_HEIGHT);
// Default close operation
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// Calling buildPanel method
buildPanels();
// Grid Layout
setLayout(new FlowLayout());
// Adding the panel to JFrame
add(textfieldPanel);
add(buttonPanel);
// Visibility
setVisible(true);
}
// Building the Panels,
private void buildPanels() {
// Initializing the Textfield
shoppingList = new JTextField(20);
// Initializing the Buttons
Save = new JButton(\"Save\");
Add = new JButton(\"Add\");
Remove = new JButton(\"Remove\");
Load = new JButton(\"Load\");
// Associating action listener
Add.addActionListener(new AddButtonListener());
Save.addActionListener(new SaveButtonListener());
Remove.addActionListener(new RemoveButtonListener());
Load.addActionListener(new LoadButtonListener());
try {
itemList = new JComboBox<>(fileToArray());
} catch (IOException e) {
itemList = new JComboBox<>();
}
itemList.setPreferredSize(new Dimension(10,20));
// Initializing the panels
textfieldPanel = new JPanel();
buttonPanel = new JPanel();
// Seting borders of the panels
textfieldPanel.setBorder(BorderFactory
.createTitledBorder(\"Shopping List\"));
buttonPanel.setBorder(BorderFactory.createTitledBorder(\"Process\"));
// Adding the objecs to the respective panels
textfieldPanel.setLayout(new BoxLayout(textfieldPanel, BoxLayout.Y_AXIS));
textfieldPanel.add(shoppingList);
textfieldPanel.add(itemList);
buttonPanel.add(Save);
buttonPanel.add(Add);
buttonPanel.add(Remove);
buttonPanel.add(Load);
}// End buildPanels
private class AddButtonListener implements ActionListener {
public void actionPerformed(ActionEvent addaction) {
if (!shoppingList.getText().trim().equals(\"\"))
itemList.addItem(shoppingList.getText().trim().toLowerCase());
}
}//end listener
private class RemoveButtonListener implements ActionListener {
public void actionPerformed(ActionEvent removeaction) {
if (itemList.getItemCount() > 0)
itemList.removeItemAt(itemList.getSelectedIndex());
else {
JOptionPane.showMessageDialog(null, \"Please select an item to delete!\");
}
}
}//end listener.
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import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import java.nio.charset.Charset;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.List;
import javax.swing.*;
public class ShoppingList extends JFrame {
private static final long myShoppingList = 1L;
// Constants for window width and height
private final int WINDOW_WIDTH = 700;
private final int WINDOW_HEIGHT = 250;
private JTextField shoppingList;
// Buttons for Save, Add, Remove, and Load features.
private JButton Save;
private JButton Add;
private JButton Remove;
private JButton Load;
// Panels for the button groups
private JPanel textfieldPanel;
private JPanel buttonPanel;
private JComboBox itemList;
/**
* CONSTRUCTOR
*/
public ShoppingList() {
// Window title
setTitle(\"Shopping List\");
// Set size
setSize(WINDOW_WIDTH, WINDOW_HEIGHT);
// Default close operation
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// Calling buildPanel method
buildPanels();
// Grid Layout
setLayout(new FlowLayout());
// Adding the panel to JFrame
add(textfieldPanel);
add(buttonPanel);
// Visibility
setVisible(true);
}
// Building the Panels,
private void buildPanels() {
// Initializing the Textfield
shoppingList = new JTextField(20);
// Initializing the Buttons
Save = new JButton(\"Save\");
Add = new JButton(\"Add\");
Remove = new JButton(\"Remove\");
Load = new JButton(\"Load\");
// Associating action listener
Add.addActionListener(new AddButtonListener());
Save.addActionListener(new SaveButtonListener());
Remove.addActionListener(new RemoveButtonListener());
Load.addActionListener(new LoadButtonListener());
try {
itemList = new JComboBox<>(fileToArray());
} catch (IOException e) {
itemList = new JComboBox<>();
}
itemList.setPreferredSize(new Dimension(10,20));
// Initializing the panels
textfieldPanel = new JPanel();
buttonPanel = new JPanel();
// Seting borders of the panels
textfieldPanel.setBorder(BorderFactory
.createTitledBorder(\"Shopping List\"));
buttonPanel.setBorder(BorderFactory.createTitledBorder(\"Process\"));
// Adding the objecs to the respective panels
textfieldPanel.setLayout(new BoxLayout(textfieldPanel, BoxLayout.Y_AXIS));
textfieldPanel.add(shoppingList);
textfieldPanel.add(itemList);
buttonPanel.add(Save);
buttonPanel.add(Add);
buttonPanel.add(Remove);
buttonPanel.add(Load);
}// End buildPanels
private class AddButtonListener implements ActionListener {
public void actionPerformed(ActionEvent addaction) {
if (!shoppingList.getText().trim().equals(\"\"))
itemList.addItem(shoppingList.getText().trim().toLowerCase());
}
}//end listener
private class RemoveButtonListener implements ActionListener {
public void actionPerformed(ActionEvent removeaction) {
if (itemList.getItemCount() > 0)
itemList.removeItemAt(itemList.getSelectedIndex());
else {
JOptionPane.showMessageDialog(null, \"Please select an item to delete!\");
}
}
}//end listener.
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