Expand|Select|Wrap|Line Numbers
- import java.awt.*;
- import java.awt.event.*;
- import javax.swing.*;
- import javax.swing.event.*;
- class Testing
- {
- java.util.List dvds = new java.util.ArrayList();
- JTextField tfTitle = new JTextField(15);
- JTextField tfProductNumber = new JTextField();
- JTextField tfPrice = new JTextField();
- JTextField tfQuantity = new JTextField();
- DefaultListModel dlm = new DefaultListModel();
- JList list = new JList(dlm);
- public void buildGUI()
- {
- JButton btn = new JButton("Add");
- JPanel p1 = new JPanel(new BorderLayout());
- JPanel p = new JPanel(new GridLayout(4,2));
- p.add(new JLabel("DVD Title: "));
- p.add(tfTitle);
- p.add(new JLabel("Product Number: "));
- p.add(tfProductNumber);
- p.add(new JLabel("Price per Unit: "));
- p.add(tfPrice);
- p.add(new JLabel("Quantity on Hand: "));
- p.add(tfQuantity);
- p1.add(p,BorderLayout.NORTH);
- JPanel p2 = new JPanel();
- p2.add(btn);
- p1.add(p2,BorderLayout.CENTER);
- JFrame f = new JFrame();
- f.getContentPane().add(p1,BorderLayout.NORTH);
- JScrollPane sp = new JScrollPane(list);
- f.getContentPane().add(sp,BorderLayout.CENTER);
- f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
- f.pack();
- f.setLocationRelativeTo(null);
- f.setVisible(true);
- btn.addActionListener(new ActionListener(){
- public void actionPerformed(ActionEvent ae){
- dvds.add(new DVD(tfTitle.getText(),tfProductNumber.getText(),
- Double.parseDouble(tfPrice.getText()),
- Integer.parseInt(tfQuantity.getText())));
- setList();
- clearTextFields();
- }
- });
- list.addListSelectionListener(new ListSelectionListener(){
- public void valueChanged(ListSelectionEvent lse){
- if(lse.getValueIsAdjusting() == false)
- {
- DVD dvd = (DVD)dvds.get(list.getSelectedIndex());
- tfTitle.setText(dvd.title);
- tfProductNumber.setText(dvd.productNumber);
- tfPrice.setText(""+dvd.price);
- tfQuantity.setText(""+dvd.quantity);
- }
- }
- });
- }
- public void setList()
- {
- dlm.clear();
- for(int x = 0, y = dvds.size(); x < y; x++)
- {
- dlm.addElement((DVD)dvds.get(x));
- }
- }
- public void clearTextFields()
- {
- tfTitle.setText("");
- tfProductNumber.setText("");
- tfPrice.setText("");
- tfQuantity.setText("");
- tfTitle.requestFocusInWindow();
- }
- public static void main(String[] args)
- {
- EventQueue.invokeLater(new Runnable(){
- public void run(){
- new Testing().buildGUI();
- }
- });
- }
- }
- class DVD
- {
- String title;
- String productNumber;
- double price;
- int quantity;
- public DVD(String t,String pn, double p, int q)
- {
- title = t; productNumber = pn; price = p; quantity = q;
- }
- public String toString(){return title;}
- }