我有一些功课要在Eclipse Neon中使用Java语言制作程序。问题是，在我登录jinternalframe后，显示2个jframe。第一个jframe是登录之前我的主框架，第二个是登录后我需要的jframe。
这是我的jframe代码
package mainProgram;
import java.awt.BorderLayout;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.ResultSet;
import java.sql.SQLException;
import javax.swing.ImageIcon;
import javax.swing.JDesktopPane;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import connection.Connect;
import mainFormContent.*;
public class MainForm extends JFrame implements ActionListener {
String Id;
String ID= "";
String role = "";
Connect con;
JMenuBar menuBar;
JMenu userMenu,viewProducts,transactions,manageProducts,viewTransactions;
JMenuItem signIn,signUp,signOut,updateProfile,exit,myCart,purchasedProducts;
JLabel lblImage = new JLabel();
JDesktopPane desktop = new JDesktopPane(){
ImageIcon icon = new ImageIcon("images/roses.jpg");
Image image = icon.getImage();
Image newimage = image.getScaledInstance(1400, 700, Image.SCALE_SMOOTH);
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
g.drawImage(newimage, 0, 0, this);
}
};
private void initGuest(){
menuBar = new JMenuBar();
userMenu = new JMenu("User");
signIn = new JMenuItem("Sign In");
signUp = new JMenuItem("Sign Up");
signOut = new JMenuItem("Sign Out");
updateProfile = new JMenuItem("Update Profile");
exit = new JMenuItem("Exit");
menuBar.add(userMenu);
userMenu.add(signIn);
userMenu.add(signUp);
userMenu.add(signOut);
userMenu.add(updateProfile);
userMenu.add(exit);
signOut.setEnabled(false);
updateProfile.setEnabled(false);
setJMenuBar(menuBar);
}
private void initUser(){
menuBar = new JMenuBar();
userMenu = new JMenu("User");
viewProducts = new JMenu("View Products");
transactions = new JMenu("Transactions");
signIn = new JMenuItem("Sign In");
signUp = new JMenuItem("Sign Up");
signOut = new JMenuItem("Sign Out");
updateProfile = new JMenuItem("Update Profile");
exit = new JMenuItem("Exit");
myCart = new JMenuItem("My Cart");
purchasedProducts = new JMenuItem("Purchased Products");
menuBar.add(userMenu);
menuBar.add(viewProducts);
menuBar.add(transactions);
userMenu.add(signIn);
userMenu.add(signUp);
userMenu.add(signOut);
userMenu.add(updateProfile);
userMenu.add(exit);
transactions.add(myCart);
transactions.add(purchasedProducts);
signIn.setEnabled(false);
signUp.setEnabled(false);
setJMenuBar(menuBar);
}
private void initAdmin(){
menuBar = new JMenuBar();
userMenu = new JMenu("User");
manageProducts = new JMenu("Manage Products");
viewTransactions = new JMenu("View Transactions History");
signIn = new JMenuItem("Sign In");
signUp = new JMenuItem("Sign Up");
signOut = new JMenuItem("Sign Out");
updateProfile = new JMenuItem("Update Profile");
exit = new JMenuItem("Exit");
menuBar.add(userMenu);
menuBar.add(manageProducts);
menuBar.add(viewTransactions);
userMenu.add(signIn);
userMenu.add(signUp);
userMenu.add(signOut);
userMenu.add(updateProfile);
userMenu.add(exit);
signIn.setEnabled(false);
signUp.setEnabled(false);
updateProfile.setEnabled(false);
setJMenuBar(menuBar);
}
public MainForm(String ID) {
Id = ID;
con = new Connect();
ResultSet rs;
try {
rs = con.executeQuery("SELECT UserRole FROM users WHERE UserID = '"+ID+"'");
while(rs.next()){
role = (String) rs.getObject("UserRole");
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
setSize(700,1000);
setTitle("Main Form");
setDefaultCloseOperation(EXIT_ON_CLOSE);
setExtendedState(MAXIMIZED_BOTH);
setLayout(new BorderLayout());
setContentPane(desktop);
if(role.equals("User")){
initUser();
signOut.addActionListener(this);
updateProfile.addActionListener(this);
exit.addActionListener(this);
viewProducts.addActionListener(this);
myCart.addActionListener(this);
purchasedProducts.addActionListener(this);
}
else if(role.equals("Admin")){
initAdmin();
signOut.addActionListener(this);
exit.addActionListener(this);
manageProducts.addActionListener(this);
viewTransactions.addActionListener(this);
}
setVisible(true);
}
public MainForm(){
setSize(700,1000);
setTitle("Main Form");
setDefaultCloseOperation(EXIT_ON_CLOSE);
setExtendedState(MAXIMIZED_BOTH);
setLayout(new BorderLayout());
setContentPane(desktop);
initGuest();
signIn.addActionListener(this);
signUp.addActionListener(this);
exit.addActionListener(this);
setVisible(true);
}
public static void main(String[] args) {
// TODO Auto-generated method stub
new MainForm();
}
@Override
public void actionPerformed(ActionEvent e) {
setContentPane(desktop);
if(role.equals("User")){
if(e.getSource()==signOut){
dispose();
new MainForm();
}
else if(e.getSource()==updateProfile){
desktop.removeAll();
desktop.add(new UpdateProfile(Id));
}
else if(e.getSource()==exit){
dispose();
}
else if(e.getSource()==viewProducts){
desktop.removeAll();
desktop.add(new ViewProducts(Id));
}
else if(e.getSource()==myCart){
desktop.removeAll();
desktop.add(new MyCart(Id));
}
else if(e.getSource()==purchasedProducts){
desktop.removeAll();
desktop.add(new PurchasedProducts(Id));
}
}
else if(role.equals("Admin")){
if(e.getSource()==signOut){
dispose();
new MainForm();
}
else if(e.getSource()==exit){
dispose();
}
else if(e.getSource()==manageProducts){
desktop.removeAll();
desktop.add(new ManageProducts(Id));
}
else if(e.getSource()==viewTransactions){
desktop.removeAll();
desktop.add(new ViewTransactions(Id));
}
}
else{
if(e.getSource()==signIn){
desktop.removeAll();
desktop.add(new SignIn());
}
else if(e.getSource()==signUp){
desktop.removeAll();
desktop.add(new SignUp());
}
else if(e.getSource()==exit){
dispose();
}
}
}
}
这是我的jinternalframe代码
import java.awt.event.*;
import java.awt.*;
import java.sql.ResultSet;
import java.sql.SQLException;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JInternalFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import connection.Connect;
public class SignIn extends JInternalFrame implements ActionListener {
String ID = "";
Connect con;
JPanel mainPanel,topPanel,midPanel,cbPanel,botPanel;
JLabel lblTop,lblEmail,lblPassword;
JCheckBox rememberCB;
JTextField txtEmail;
JPasswordField txtPassword;
JButton signinBtn;
private void init(){
mainPanel = new JPanel(new GridLayout(3,1));
topPanel = new JPanel(new GridLayout(1,1));
midPanel = new JPanel(new GridLayout(3,2,10,15));
botPanel = new JPanel(new FlowLayout());
lblTop = new JLabel("Sign in to Lave's Vuitton",JLabel.CENTER);
lblTop.setFont(lblTop.getFont().deriveFont(16.0f));
lblEmail = new JLabel("Email");
lblPassword = new JLabel("Password");
txtEmail = new JTextField();
txtPassword = new JPasswordField();
rememberCB =new JCheckBox("Remember Me");
signinBtn = new JButton("Sign In");
lblTop.setForeground(Color.WHITE);
lblEmail.setForeground(Color.WHITE);
lblPassword.setForeground(Color.WHITE);
rememberCB.setForeground(Color.WHITE);
rememberCB.setBackground(Color.PINK);
signinBtn.setForeground(Color.PINK);
topPanel.setBorder(BorderFactory.createEmptyBorder(0,0,25,0));
topPanel.add(lblTop);
midPanel.add(lblEmail);
midPanel.add(txtEmail);
midPanel.add(lblPassword);
midPanel.add(txtPassword);
midPanel.add(rememberCB);
botPanel.setBorder(BorderFactory.createEmptyBorder(38,0,0,0));
botPanel.add(signinBtn);
mainPanel.add(topPanel);
mainPanel.add(midPanel);
mainPanel.add(botPanel);
topPanel.setBackground(Color.PINK);
midPanel.setBackground(Color.PINK);
botPanel.setBackground(Color.PINK);
mainPanel.setBackground(Color.PINK);
add(mainPanel);
}
public SignIn(){
con = new Connect();
setSize(450,300);
setTitle("SignIn");
setClosable(true);
setDefaultCloseOperation(DISPOSE_ON_CLOSE);
setLayout(new BorderLayout());
init();
signinBtn.addActionListener(this);
setVisible(true);
}
boolean check(String email,String password){
String pass = "";
String emai = "";
try {
ResultSet rs = con.executeQuery("SELECT UserID AS IDentity FROM users WHERE UserEmail = '"+email+"'");
while(rs.next()){
ID = (String)rs.getObject("IDentity");
}
rs = con.executeQuery("SELECT UserEmail AS Emai FROM users WHERE UserID = '"+ID+"'");
while(rs.next()){
emai = (String)rs.getObject("Emai");
}
rs = con.executeQuery("SELECT UserPassword AS Pass FROM users WHERE UserID = '"+ID+"'");
while(rs.next()){
pass = (String)rs.getObject("Pass");
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if (!email.equals(emai)){
JOptionPane.showMessageDialog(this,"Email Not Registered!");
return false;
}
else if(!password.equals(pass)){
JOptionPane.showMessageDialog(this,"Invalid Password!");
return false;
}
else if(password.equals(pass)){
return true;
}
return false;
}
@Override
public void actionPerformed(ActionEvent a) {
// TODO Auto-generated method stub
if(a.getSource()==signinBtn){
String email = txtEmail.getText();
char[]password = txtPassword.getPassword();
String pass = new String(password);
if(email.isEmpty()||pass.isEmpty())JOptionPane.showMessageDialog(this,"Please fill all space");
else if(!email.isEmpty()||!pass.isEmpty()){
if(check(email,pass)==true){
if(rememberCB.isSelected()){
JOptionPane.showMessageDialog(this,"Hello, "+email.substring(0 ,email.indexOf("@"))+" ! You don't have to fill the password again next time.");
dispose();
new MainForm(ID);
}
else {
JOptionPane.showMessageDialog(this,"Hello, "+email.substring(0 ,email.indexOf("@"))+" !");
dispose();
new MainForm(ID);
}
}
}
}
}
}
完成jinternalframe的登录后，我需要关闭第一个jframe并显示新的jframe。 或第一个jframe更新到我的新jframe而不关闭它。
需要帮助...＃初学者＃ 谢谢...