How to get a Username on the next page

[Sege Stephen]

Hi Guys, this might seem easy enough, but I HAVEn't been able to get it to work.

I created a registerGUi class, where the User set his username and Id, password and other things. I then added the Listener to register button to get the username from the username field when register is clicked. Everything works fine and I can save the details to the database. However, I created another page which i called RegisterConfirmation, basically it has a text area that contains the message: Welcome "username", you have successfully registered.

to launch this Frame - RegisterConfirmation, I am creating a new object which I put in my actionlistener, but everytime I get a null value. Ofcourse coming from a Java web background, this is easy as all I have to do is put the Username in a session scope, but I am new to Swing, so it different the way I have to handle this.

I created a setter and getter for String user- which I assign the username, but it seems every time If I created a new obejct of RegisterConfirmation, and then set user to username, it runs the constructor of RegisterConfirmation before setting the value , but this time in the text area the result is null

code Register class

  
if (event.getSource() == register) {   		
    		
    		if(!(sub.userName.getText().equals(""))){    						
    			saveRegisteredUser(sub.userName.getText(),sub.password.getPassword(), sub.fname.getText(), sub.lname.getText());
    			
    			
    			this.setVisible(false); 
    			
    			regconf = new RegistrationConfirmation();
    			regconf.setUser(sub.userName.getText());
    			System.out.println("User2 is valee " +user);
  

Registrationconfirmation class

   
public class RegistrationConfirmation extends JFrame {
	
	private String user;
	
	
	

	public RegistrationConfirmation() {
		super("You are Now Registered");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);	
		
				
		JPanel pane = new JPanel();
		JTextArea tx = new JTextArea(10, 60);
		JButton ok = new JButton("Ok");
		JButton cancel = new JButton("Cancel");
		
		pane.add(tx);		
		tx.setText("Congratulations " +getUser() + ", You are now Registered" +"\n"+ "\n" + "Please click OK to log in");
		pane.add(ok);
		pane.add(cancel);
		add(pane);
		
		setSize(500, 300);
		setVisible(true);
		System.out.println("valeu5 is is " +user);
		
	}

	public void setUser(String user) {
		this.user = user;
	}

	public String getUser() {		
		return user;
	}
	
	
}
 

[Michael Dunn]

if you follow the flow, it has to be null

line 10 of Register class
regconf = new RegistrationConfirmation();
which calls the constructor

and on line 20 of RegistrationConfirmation constructor
tx.setText("Congratulations " +getUser()...
where getUser() is null

user is not set (setUser) until line 11 of Register class,
i.e. after RegistrationConfirmation constructor returns

[Sege Stephen]

Michael,

That is true, but the problem I have is that I cannot call setUser() method before creating a new instance RegistrationConfirmation , because I need an instance the class to call the setUser() method. So how do I go about it?

I still don't know the solution.

[Gregg Bolinger]

Pass the user into the RegistrationConfirmation constructor.

[Sege Stephen]

Thanks Gregg, it is very easy.

But i spent hours on it .