我正在使用Eclipse Kepler创建应用程序...我在Eclipse-数据库，实体和UI中创建了3个数据库。在数据库中，它包含ContactDAO，UserDAO和DBManager（用于数据库连接）。在实体中，它包含联系人和用户。在UI中，它包含ContactAdd，COntactDetails，ContactList，LoginFrame和MenuFrame JFrames。现在，我被困在ContactList框架...它包含ComboBox，我试图运行它，但我无法得到名称......这是代码：
public class ContactList extends JFrame {
private JPanel contentPane;
private JTextField txtSearch;
private JComboBox cbContactNames;
private MenuFrame parentFrame;
private Contact selContact;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
ContactList frame = new ContactList(null);
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public ContactList(MenuFrame f) {
this.parentFrame = f;
setTitle("Personal Assistant");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 300);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
txtSearch = new JTextField();
txtSearch.setBounds(22, 11, 294, 20);
contentPane.add(txtSearch);
txtSearch.setColumns(10);
JButton btnSearch = new JButton("Search");
btnSearch.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
searchContact();
}
});
btnSearch.setBounds(326, 10, 89, 23);
contentPane.add(btnSearch);
JLabel lblName = new JLabel("Name");
lblName.setBounds(42, 88, 46, 14);
contentPane.add(lblName);
cbContactNames = new JComboBox();
cbContactNames.addItemListener(new ItemListener() {
public void itemStateChanged(ItemEvent e) {
if (e.getStateChange()==ItemEvent.SELECTED)
{
if (cbContactNames.getSelectedIndex()>0){
String name=(String)cbContactNames.getSelectedItem();
selContact=ContactDAO.findContactByName(name); //adjusted
showContact();
}
}
}
});
ArrayList<Contact> ContactList=ContactDAO.getAllContacts();
cbContactNames.addItem("--Select Name--");
for (int i=0; i<ContactList.size(); i++)
{
Contact contact = ContactList.get(i);
cbContactNames.addItem(contact.getName());
}
cbContactNames.setBounds(87, 85, 229, 20);
contentPane.add(cbContactNames);
JButton btnClose = new JButton("Close");
btnClose.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
goBack();
}
});
btnClose.setBounds(158, 203, 89, 23);
contentPane.add(btnClose);
}
private void goBack() {
// TODO Auto-generated method stub
parentFrame.setVisible(true);
this.dispose();
}
private void showContact() {
// TODO Auto-generated method stub
ContactDetails contactdetails=new ContactDetails(this,selContact);
contactdetails.setVisible(true);
this.setVisible(false);
}
private void searchContact() {
String name=txtSearch.getText();
if (name!=null){
selContact=ContactDAO.findContactByName(txtSearch.getText());
}
showContact();
}
}
然后，我还创建了ContactDetails框架，其中包含联系人详细信息，编辑保存和关闭按钮，以及删除标签设置为图像。该项目说，当点击编辑按钮时，保存按钮将可见......我不知道该怎么做...这是我的代码：
public class ContactDetails extends JFrame {
private JPanel contentPane;
private JTextField txtName;
private JTextField txtMobile;
private JTextField txtHome;
private JTextField txtEmail;
private JButton btnEdit;
private JButton btnSave;
private ContactList parentFrame;
private Contact contact;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
ContactDetails frame = new ContactDetails(null,null);
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public ContactDetails(ContactList f,Contact c) {
this.parentFrame = f;
this.contact=c;
setTitle("Contact Details");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 300);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
JLabel lblImage = new JLabel("");
lblImage.setIcon(new ImageIcon(ContactDetails.class.getResource("/images/kitty.png")));
lblImage.setBounds(34, 28, 79, 70);
contentPane.add(lblImage);
JLabel lblName = new JLabel("Name:");
lblName.setBounds(119, 48, 46, 14);
contentPane.add(lblName);
txtName = new JTextField(contact.getName());
txtName.setBounds(162, 45, 169, 20);
contentPane.add(txtName);
txtName.setColumns(10);
JLabel lblMobile = new JLabel("Mobile:");
lblMobile.setBounds(119, 93, 46, 14);
contentPane.add(lblMobile);
txtMobile = new JTextField();
txtMobile.setBounds(162, 90, 169, 20);
contentPane.add(txtMobile);
txtMobile.setColumns(10);
JLabel lblHome = new JLabel("Home:");
lblHome.setBounds(119, 141, 46, 14);
contentPane.add(lblHome);
txtHome = new JTextField();
txtHome.setBounds(162, 138, 169, 20);
contentPane.add(txtHome);
txtHome.setColumns(10);
JLabel lblEmail = new JLabel("Email:");
lblEmail.setBounds(119, 186, 46, 14);
contentPane.add(lblEmail);
txtEmail = new JTextField();
txtEmail.setBounds(162, 183, 169, 20);
contentPane.add(txtEmail);
txtEmail.setColumns(10);
JButton btnSave = new JButton("Save");
btnSave.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
contactAdded();
}
});
btnSave.setBounds(184, 227, 74, 23);
contentPane.add(btnSave);
JButton btnEdit = new JButton("Edit");
btnEdit.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
editContact();
}
});
btnEdit.setBounds(110, 227, 74, 23);
contentPane.add(btnEdit);
JButton btnClose = new JButton("Close");
btnClose.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
goBack();
}
});
btnClose.setBounds(257, 227, 74, 23);
contentPane.add(btnClose);
JLabel lblDelete = new JLabel("");
lblDelete.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent arg0) {
removeContact();
}
});
lblDelete.setIcon(new ImageIcon(ContactDetails.class.getResource("/images/trush.png")));
lblDelete.setBounds(365, 28, 46, 54);
contentPane.add(lblDelete);
}
private void contactAdded() {
// TODO Auto-generated method stub
String name=txtName.getText();
String mobile=txtMobile.getText();
String home=txtHome.getText();
String email=txtEmail.getText();
Contact contact = new Contact(name, mobile, home, email);
if(ContactDAO.create(contact)){
JOptionPane.showMessageDialog(contentPane, "Contact successfull saved!");
}
else {
JOptionPane.showMessageDialog(contentPane, "Contact not save!");
}
}
private void goBack() {
// TODO Auto-generated method stub
parentFrame.setVisible(true);
this.dispose();
}
private void removeContact() {
// TODO Auto-generated method stub
String name=txtName.getText();
String mobile=txtMobile.getText();
String home=txtHome.getText();
String email=txtEmail.getText();
Contact contact = new Contact(name, mobile, home, email);
if(ContactDAO.delete(contact)){
JOptionPane.showMessageDialog(contentPane, "Contact deleted");
}
else {
JOptionPane.showMessageDialog(contentPane, "Contact delete unsuccessful");
}
}
private void editContact() {
// TODO Auto-generated method stub
String name=txtName.getText();
String mobile=txtMobile.getText();
String home=txtHome.getText();
String email=txtEmail.getText();
Contact contact = new Contact(name, mobile, home, email);
if (ContactDAO.update(contact)){
JOptionPane.showMessageDialog(contentPane, "Contact successfully updated");
}
else {
JOptionPane.showMessageDialog(contentPane, "Contact update unsuccessful");
}
}
}
此外，保存按钮对我来说很棘手......似乎在单击“保存”按钮后，会弹出一条消息，确认应该包含（确定）按钮。单击（确定）按钮时，将禁用“保存”按钮，并再次启用“编辑”按钮。所有文本字段都将被禁用。 （删除图标按钮）还需要一个包含（是，否和取消）按钮的提示框。如果确认，联系人将被删除，用户将被带回联系人列表框架......我该怎么做？
告诉我是否必须创建另一个JFrame或DAO ......
答案 0 :(得分：0)
你的保存按钮需要这样的东西，删除按钮也是如此：
int showConfirmDialog = JOptionPane.showConfirmDialog(new JFrame(), "Approve?","Title",JOptionPane.YES_NO_OPTION);
if(showConfirmDialog == JOptionPane.YES_OPTION){
btnSave.setEnabled(false);
btnEdit.setEnabled(true);
txtName.setEnabled(false);
//other fields
} else {
//If no or cancel actions
}