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Hello Every Body ,
I have written a Login screen for AS/400 with Grid Layout
Constraints. I am not able to proceed after one step. I am new to Java
programming so please help me in completing the following code. The basic
requirement is it should connect to the as400 when accessing from the we
browser. I was able to complete till the connection. This code will prompt
for a login using Dialog box.
My requirements are
1. Since it will take some time to connect to the as400 , so during
that time I want to activate a progress bar , but not able to accomplish
that.
2. I am not able to throw as400 connection event by which I thought I
can activate.
3. It is working fine other wise.
4. How to trap the connection event and implement
5. How to activate a progress bar.
6. Please give me suggestions to improve my coding techniques.
7. How to retrieve a flag such that , the NET.data macro from which I
am calling this applet realizes that the connection has been established.
My main program
/***************************************************************************
*******************/
/* Program Name : login.java
*/
/*
*/
/* Description : Java Applet Program that receives the UserId &
Password */
/* and performs the Validations
*/
/*
*/
/* Referenced Classes : screen
*/
/***************************************************************************
*******************/
import com.ibm.as400.access.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.applet.*;
import javax.swing.*;
public class AS400login extends Applet
{
public void init(){
LoginDialog as400signon = new LoginDialog();
as400signon.setResizable(false);
as400signon.show();
}
public static void main(String args[]){
LoginDialog as400signon = new LoginDialog();
as400signon.setResizable(false);
as400signon.show();
}
}
class LoginDialog extends Dialog
{
Button Signon = new Button("Signon");
Button Cancel = new Button("Cancel");
TextField SignonSystem = new TextField("MICO11",10);
TextField User = new TextField(10);
TextField Password = new TextField(10);
Label SystemName = new Label("System ");
Label UserName = new Label("User ");
Label PasswordEntry = new Label("Password");
Label Blank = new Label("Connecting to MICO11");
AS400 as400 = new AS400("" ,"" , "" );
int rcode=0;
//Progress Bar Simulation.
JProgressBar pbar = new JProgressBar(JProgressBar.HORIZONTAL);
char EchoChar = '*';
Panel p0 = new Panel();
Panel p1 = new Panel();
Panel p2 = new Panel();
BorderLayout borderlayout = new BorderLayout();
GridBagLayout gridbag = new GridBagLayout();
GridBagConstraints c1 = new GridBagConstraints();
GridBagConstraints c2 = new GridBagConstraints();
public LoginDialog ()
{
//For Creating a Dialog Box Frame
super(new Frame("AS/400 Signon Frame") ,"AS4/00 Signon Prompt", true
);
this.setLayout(borderlayout);
resize(300,250);
move(240,240);
//to add the action Listeners.
addWindowListener(new WindowEventHandler());
Signon.addActionListener(new HandleButton());
Cancel.addActionListener(new HandleButton());
as400.addConnectionListener(new as400ConnectionEvent());
borderlayout.setVgap(5);
// Add the panels to the frame.
add(p0,BorderLayout.NORTH); // Image Panel
add(p1,BorderLayout.CENTER); // Field Panel
add(p2,BorderLayout.SOUTH); //Button Panel
//The Intial Prompt Screen Intialisation
Password.setEchoChar(EchoChar);
Blank.disable();
pbar.disable();
SignonSystem.setEditable(false);
SystemName.setFont(new java.awt.Font("dialog",1,12));
UserName.setFont(new java.awt.Font("dialog",1,12));
PasswordEntry.setFont(new java.awt.Font("dialog",1,12));
SystemName.setAlignment(java.awt.Label.LEFT);
UserName.setAlignment(java.awt.Label.LEFT);
PasswordEntry.setAlignment(java.awt.Label.LEFT);
User.requestFocus();
//creating a panel for arangement of the
p0.setLayout(gridbag);
p1.setLayout(gridbag);
p2.setLayout(gridbag);
p0.add(Blank);
//changing the relative positions.
c1.weightx = 1.0;
c1.gridwidth = GridBagConstraints.RELATIVE;
gridbag.setConstraints(SystemName, c1);
p1.add(SystemName);
c1.gridwidth = GridBagConstraints.REMAINDER;
gridbag.setConstraints(SignonSystem, c1);
p1.add(SignonSystem);
c1.weighty = 1.0;
c1.gridwidth = GridBagConstraints.RELATIVE;
gridbag.setConstraints(UserName, c1);
p1.add(UserName);
c1.gridwidth = GridBagConstraints.REMAINDER;
gridbag.setConstraints(User, c1);
p1.add(User);
c1.weighty = 0.5;
c1.weightx = 0.0;
c1.gridwidth = GridBagConstraints.RELATIVE;
gridbag.setConstraints(PasswordEntry, c1);
p1.add(PasswordEntry);
c1.gridwidth = GridBagConstraints.REMAINDER;
gridbag.setConstraints(Password, c1);
p1.add(Password);
c2.weighty = 0.0;
c2.weightx = 0.5;
c2.gridwidth = GridBagConstraints.RELATIVE;
gridbag.setConstraints(Signon, c2);
p2.add(Signon);
c2.gridwidth = GridBagConstraints.REMAINDER;
gridbag.setConstraints(Cancel, c2);
p2.add(Cancel);
c2.weighty = 1.0;
c2.weightx = 1.0;
c2.gridwidth = GridBagConstraints.CENTER;
gridbag.setConstraints(Blank,c2);
p2.add(Blank);
c2.weighty = 1.0;
c2.gridwidth = GridBagConstraints.CENTER;
gridbag.setConstraints(pbar,c2);
p2.add(pbar);
}
class HandleButton implements ActionListener {
// Handle the clicking of a button
public void actionPerformed(ActionEvent ev){
String s=ev.getActionCommand();
if (s.equals("Signon"))
{
if(User.getText().length() == 0)
{
String ErrorMessage = "User Field cannot be blanks";
OKDialog myDialog = new OKDialog(ErrorMessage);
myDialog.setResizable(false);
myDialog.show();
User.requestFocus();
return ;
}
if(Password.getText().length() == 0)
{
String ErrorMessage = "Password Field cannot be
blanks";
OKDialog myDialog = new OKDialog(ErrorMessage);
myDialog.setResizable(false);
myDialog.show();
Password.requestFocus();
return ;
}
}
if (s.equals("Cancel"))
{
dispose();
return;
}
try{
/***************************************************************************
*******************/
/* AS400 Connecting routine
*/
/***************************************************************************
*******************/
as400.disconnectAllServices();
as400 = new com.ibm.as400.access.AS400(SignonSystem.getText()
,User.getText(),Password.getText());
as400.setGuiAvailable(false);
if(as400.validateSignon(User.getText(),Password.getText()))
{
String ErrorMessage = "Good Connected";
OKDialog myDialog = new OKDialog(ErrorMessage);
myDialog.setResizable(false);
myDialog.show();
Password.requestFocus();
Signon.disable();
Blank.disable();
pbar.disable();
return ;
}
}
catch(AS400SecurityException e)
{
/***************************************************************************
*******************/
/* Displaying error messges
*/
/***************************************************************************
*******************/
rcode = e.getReturnCode();
if(rcode == AS400SecurityException.USERID_UNKNOWN)
{
String ErrorMessage = "Invalid User Profile";
OKDialog myDialog = new OKDialog(ErrorMessage);
myDialog.setResizable(false);
myDialog.show();
Signon.enable();
Blank.disable();
pbar.disable();
User.requestFocus();
return ;
}
else
if(rcode == AS400SecurityException.PASSWORD_INCORRECT)
{
String ErrorMessage = "Password not Valid";
OKDialog myDialog = new OKDialog(ErrorMessage);
myDialog.setResizable(false);
myDialog.show();
Signon.enable();
Blank.disable();
pbar.disable();
Password.requestFocus();
return ;
}
else
{
String ErrorMessage = "Error -Contact System Admin";
OKDialog myDialog = new OKDialog(ErrorMessage);
myDialog.setResizable(false);
myDialog.show();
Signon.enable();
Blank.disable();
pbar.disable();
User.requestFocus();
return ;
}
}
catch(java.beans.PropertyVetoException ve){}
catch(IOException ie){}
}
}
class as400ConnectionEvent implements ConnectionListener
{
public void connected(ConnectionEvent e)
{
Signon.disable();
Blank.enable();
pbar.enable();
}
public void disconnected(ConnectionEvent e)
{
String ErrorMessage = "Good disConnected";
OKDialog myDialog = new OKDialog(ErrorMessage);
myDialog.setResizable(false);
myDialog.show();
}
}
}
class WindowEventHandler extends WindowAdapter {
// Handle the window's closing
public void windowClosing(WindowEvent e){
System.exit(0);
}
}
/*********************** End Of The Program
***************************************************/
Dialog Box Class
import java.applet.Applet;
import java.awt.Dialog;
import java.awt.Frame;
import java.awt.Button;
import java.awt.Label;
import java.awt.Panel;
import java.awt.Event;
import java.awt.BorderLayout;
public class OKDialog extends Dialog {
Button OK = new Button("OK");
public OKDialog(String ErrorMessage) {
super(new Frame("Error Message" ) ,"Error Message", true );
addWindowListener(new WindowEventHandler());
BorderLayout borderlayout = new BorderLayout();
this.setLayout(borderlayout);
Label Blank = new Label(ErrorMessage);
Blank.setAlignment(Label.CENTER);
Blank.setBackground(new java.awt.Color(179,209,220));
resize(275, 150);
move(300,300);
Panel p1 = new Panel();
p1.setLayout(null);
Blank.setBounds(25,25,225,40);
OK.setBounds(125,75,25,25);
p1.add(Blank);
p1.add(OK);
add(p1,BorderLayout.CENTER);
}
public boolean action(Event e, Object o) {
if (e.target == OK) {
dispose();
return true;
}
return false;
}
}
Please help me.
With regards
Padmanabhan
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