Problem in Disabled the Menus

Question

hi everyone,
Hello am developing a application in java. I used InternalFrame and JDesktop.. My problem is after the login i want to disabled the menu in the Menubar when the user login sucessfully it will be enabled and ready to click. But am having a problem because my code in login is separated into the MainFrame.. i got to java file 1. MainFrame_PCM.java and MyLoginInternalFrame.java. So when the MainFrame_PCM was run it will call MyLoginInternalFrame as my login in window what i want is by default the MenuBar in MainFrame_PCM was set disabled and after login successfully i will set them enabled .Hope you understand my problem .Any help will do ..
Thank you very much in advance
Armando Dizon

Answer 1

Hi Pravinth,
Thank you very very much in reply in my email.Below is my code of the MainFrame and the LoginFrame as i mention in my previous post. The scencario in the thread that similar in my problem is you have to go to Main menu and click login and login form or frame will pop up in my case automatic popup and what i want sir is when the popup frame will appear and successfully login the Menu will be setEnabled. Thank you i really apprecaite your help
/*File name : MainFrame_PCM.java*/
import javax.swing.JInternalFrame;
import javax.swing.JDesktopPane;
import javax.swing.JMenu;
import javax.swing.JMenuItem;
import javax.swing.JMenuBar;
import javax.swing.JFrame;
import javax.swing.KeyStroke;
import java.awt.event.*;
import java.awt.*;
* MainFrame_PCM.java is a 1.4 application that requires:
* MyInternalFrame.java
public class MainFrame_PCM extends JFrame implements ActionListener
JDesktopPane desktop;
public MainFrame_PCM()
super("Peso Collection Module");
//Make the big window be indented 50 pixels from each edge
//of the screen.
int inset = 50;
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
setBounds(inset, inset,
screenSize.width - inset*2,
screenSize.height - inset*2);
//Set up the GUI.
desktop = new JDesktopPane(); //a specialized layered pane
createLoginFrame(); //create first "window"
setContentPane(desktop);
setJMenuBar(createMenuBar());
//Make dragging a little faster but perhaps uglier.
desktop.setDragMode(JDesktopPane.OUTLINE_DRAG_MODE);
/* This portion creates the Menu Tool Bar.
// And creates the Menu Toor Bar sub menus.
// Ining parti na ning code a ini gawa yang
//menu Bar and Sube menus pra keng Main Menu
protected JMenuBar createMenuBar()
JMenuBar menuBar = new JMenuBar();
//Set up Main Menus
JMenu menu = new JMenu("Main Menu");
menu.setMnemonic(KeyEvent.VK_D);
menuBar.add(menu);
JMenu menu2 = new JMenu("Maintenance");
menu2.setMnemonic(KeyEvent.VK_M);
menuBar.add(menu2);
///////////////////// SUB MENUS CODE HERE ///////////////////
//a submenu
          menu2.addSeparator();
          JMenu submenu = new JMenu("Manage Users");
          submenu.setMnemonic(KeyEvent.VK_S);
          JMenuItem menuItem8 = new JMenuItem("Add New User");
          menuItem8.setAccelerator(KeyStroke.getKeyStroke( KeyEvent.VK_A, ActionEvent.ALT_MASK));
          menuItem8.setActionCommand("adduser");
          menuItem8.addActionListener(this);
          submenu.add(menuItem8);
          JMenuItem menuItem9 = new JMenuItem("Edit User Profile");
          menuItem9.setAccelerator(KeyStroke.getKeyStroke( KeyEvent.VK_E, ActionEvent.ALT_MASK));
          menuItem9.setActionCommand("editusers");
          menuItem9.addActionListener(this);
          submenu.add(menuItem9);
          menu2.add(submenu);
          JMenuItem menuItem10 = new JMenuItem("Delete User");
          menuItem10.setAccelerator(KeyStroke.getKeyStroke( KeyEvent.VK_D, ActionEvent.ALT_MASK));
          menuItem10.setActionCommand("deleteusers");
          menuItem10.addActionListener(this);
          submenu.add(menuItem10);
          menu2.add(submenu);
          //Set up the Maintenance Menu item.
JMenuItem menuItemMtc = new JMenuItem(" Program Access");
menuItemMtc.setMnemonic(KeyEvent.VK_U);
// menuItemMtc.setAccelerator(KeyStroke.getKeyStroke( KeyEvent.VK_L, ActionEvent.ALT_MASK));     
menuItemMtc.setActionCommand("manage_users");
menuItemMtc.addActionListener(this);
menu2.add(menuItemMtc);
          /*--------End of Maintenance Menu item--------*/
//Set up the Main menu item.
JMenuItem menuItem = new JMenuItem("Login");
menuItem.setMnemonic(KeyEvent.VK_L);
menuItem.setAccelerator(KeyStroke.getKeyStroke(
KeyEvent.VK_L, ActionEvent.ALT_MASK));     
menuItem.setActionCommand("login");
menuItem.addActionListener(this);
menu.add(menuItem);
          JMenuItem menuItem2 = new JMenuItem("User Maintenance");
menuItem2.setMnemonic(KeyEvent.VK_N);
menuItem2.setAccelerator(KeyStroke.getKeyStroke(
KeyEvent.VK_N, ActionEvent.ALT_MASK));     
menuItem2.setActionCommand("user");
menuItem2.addActionListener(this);
menu.add(menuItem2);
          //Set up the QUIT menu item.
menuItem = new JMenuItem("Quit");
menuItem.setMnemonic(KeyEvent.VK_Q);
menuItem.setAccelerator(KeyStroke.getKeyStroke(
KeyEvent.VK_Q, ActionEvent.ALT_MASK));
menuItem.setActionCommand("quit");
menuItem.addActionListener(this);
menu.add(menuItem);
/*--------End of Main Menu item--------*/
return menuBar;
//////////////////// END OF SUB MENUS HERE ////////////////////
//React to Sub menu selections. keni la mayayaus deng forms potng me click!
public void actionPerformed(ActionEvent e)
if ("login".equals(e.getActionCommand())) //new login fram
createLoginFrame();
               else if ("user".equals(e.getActionCommand())) //new temporary ya ini
               createFrame();
               else if ("adduser".equals(e.getActionCommand())) //new user frame
               createManageUserFrame();//call the Manage User Form Functions
               else if ("editusers".equals(e.getActionCommand())) //new user frame
               createEditUserFrame();//call the Edit User Form Functions
               else if ("deleteusers".equals(e.getActionCommand())) //new user frame
               createDeleteUserFrame();//call the Edit User Form Functions
          else //quit
quit();
     /*-------------- End Of Sub Menus Reactions ------------*/     
     //Create a new internal frame for User Login
          protected void createLoginFrame()
               MyLoginInternalFrame frame = new MyLoginInternalFrame();
               frame.setVisible(true); //necessary as of 1.3
               desktop.add(frame);
               try
                    frame.setSelected(true);
               } catch (java.beans.PropertyVetoException e) {}
          //Create a new internal frame for User Maintenance TEMPORARY YA INI BOI
          protected void createFrame()
               MyInternalFrame frame = new MyInternalFrame();
               frame.setVisible(true); //necessary as of 1.3
               desktop.add(frame);
          try
                    frame.setSelected(true);
               } catch (java.beans.PropertyVetoException e) {}
          // Create a new internal fram for Manage Users
          protected void createManageUserFrame()
               ManageUserForm frame = new ManageUserForm();
               frame.setVisible(true); //necessary as of 1.3
               desktop.add(frame);
          try
                    frame.setSelected(true);
               } catch (java.beans.PropertyVetoException e) {}
          // Create a new internal fram for Edit Users
          protected void createEditUserFrame()
               createEditUserForm frame = new createEditUserForm();
               frame.setVisible(true); //necessary as of 1.3
               desktop.add(frame);
          try
                    frame.setSelected(true);
               } catch (java.beans.PropertyVetoException e) {}
          // Create a new internal fram for Edit Users
          protected void createDeleteUserFrame()
               createDeleteUserForm frame = new createDeleteUserForm();
               frame.setVisible(true); //necessary as of 1.3
               desktop.add(frame);
          try
                    frame.setSelected(true);
               } catch (java.beans.PropertyVetoException e) {}
//Quit the application.
protected void quit() {
System.exit(0);
* Create the GUI and show it. For thread safety,
* this method should be invoked from the
* event-dispatching thread.
private static void createAndShowGUI() {
//Make sure we have nice window decorations.
JFrame.setDefaultLookAndFeelDecorated(true);
//Create and set up the window.
MainFrame_PCM frame = new MainFrame_PCM();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Display the window.
frame.setVisible(true);
public static void main(String[] args) {
//Schedule a job for the event-dispatching thread:
//creating and showing this application's GUI.
                    javax.swing.SwingUtilities.invokeLater(new Runnable()
                         public void run() {
                              createAndShowGUI();
/*File name : MyLoginInternalFrame.java*/
import javax.swing.JInternalFrame;
import javax.swing.JLabel;
import javax.swing.JButton;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.sql.*;
public class MyLoginInternalFrame extends JInternalFrame implements ActionListener
     static final int xOffset = 320, yOffset = 200;
     JPasswordField pass_word;
     JTextField user_name;
     JLabel lbl;
     JButton btnclear, btnexit,btnsearch;
     String url;
     Connection connect;
public MyLoginInternalFrame()
     super("User Login ");
                    //Database Connectivity
                    try
                    url = "jdbc:odbc:Plogbook";
                    Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
                    connect = DriverManager.getConnection(url);
                         catch(ClassNotFoundException cnfex)
                         cnfex.printStackTrace();
                         System.err.println("Failed to load JDBC/ODBC driver");
                         System.exit(1);     
                         catch (SQLException sqlex)
                         sqlex.printStackTrace();     
                         catch (Exception ex)
                         ex.printStackTrace();     
               //Fields to be Set Up
               Container c = getContentPane();
               GridLayout ly = new GridLayout(0,3);
               c.setLayout(ly);
               //Blank Labels
               lbl = new JLabel(" ");
               c.add(lbl);
               lbl = new JLabel(" ");
               c.add(lbl);
               lbl = new JLabel(" ");
               c.add(lbl);
               lbl = new JLabel(" Username:");
               c.add(lbl);
               user_name = new JTextField(20);
               user_name.setToolTipText("Enter Your User Name");
               c.add(user_name);
               lbl = new JLabel(" ");
               c.add(lbl);
               lbl = new JLabel(" Password:");
               c.add(lbl);
               pass_word = new JPasswordField(200);
               pass_word.setToolTipText("Enter Your Password");
               c.add(pass_word);
               lbl = new JLabel(" ");
               c.add(lbl);
               lbl = new JLabel(" ");
               c.add(lbl);
               lbl = new JLabel(" ");
               c.add(lbl);
               lbl = new JLabel(" ");
               c.add(lbl);
               btnsearch = new JButton("Login");
               btnsearch.addActionListener(this);
               c.add(btnsearch);
               //btnclear = new JButton("Clear");
               //btnclear.addActionListener(this);
               //c.add(btnclear);
               btnexit = new JButton("Cancel");
               btnexit.addActionListener(this);
               c.add(btnexit);
               //Blank Labels
               lbl = new JLabel(" ");
               c.add(lbl);
               lbl = new JLabel(" ");
               c.add(lbl);
               lbl = new JLabel(" ");
               c.add(lbl);
               setSize(300,150);
               setLocation(xOffset, yOffset);
               //Quit the application.
               protected void quit()
               System.exit(0);
               public void actionPerformed(ActionEvent e)
               // Clear the fields
                    if(e.getSource() == btnclear)
                    user_name.setText("");
                    pass_word.setText("");
               // Exit the program
                    if(e.getSource() == btnexit)
                    //setVisible(false);
                    quit();
                         // Search the file
                              if(e.getSource()==btnsearch)
                                        try
                                             Statement statement=connect.createStatement();
                                             String sqlQuery ="SELECT * FROM a_user WHERE user_id = '"+ user_name.getText() + "' AND password = '"+ pass_word.getText() + "'";
                                             ResultSet rs = statement.executeQuery(sqlQuery);
                                             if(rs.next())
                                                  setVisible(false);
                                                  JOptionPane.showMessageDialog(null,"ACCESS GRANTED");     
                                                  else
                                                       JOptionPane.showMessageDialog(null,"ACCESS DENIED");
                                                       user_name.setText("");
                                                       pass_word.setText("");
                                             catch (SQLException sqlex)
                                                  sqlex.printStackTrace();          
                                                  JOptionPane.showMessageDialog(null, sqlex.toString());     
               public static void main(String arg[])
                         MyLoginInternalFrame frm = new MyLoginInternalFrame();
                         frm.show();
}